OE MATCH

96mm Big Bore Cylinder Kit – VW Type 4 – Porsche 914 – VW9600T4L

Increase the capacity and performance of your Porsche 914 Type 4 engine with this OE Match 96mm Big Bore Cylinder Kit, designed for Volkswagen Type 4 engines fitted to the Porsche 914.

Manufactured from high-quality cast iron, these precision-machined cylinders offer excellent durability, heat dissipation and long service life. The kit is designed to slip directly into any 1.7, 1.8 or 2.0-litre Type 4 crankcase without requiring any crankcase machining, making it one of the simplest and most effective engine upgrades available.

Please Note: If fitting this kit to 1.7-litre cylinder heads, the heads must be machined to accept the larger 96mm cylinder diameter. The cylinders themselves require no machining and are ready for installation.

Ideal for performance engine builds or replacing worn original cylinders, this big bore kit offers increased displacement potential while maintaining OE-quality fitment.

What Do Engine Cylinders Do?

Engine cylinders provide the precision-machined bore in which the pistons travel, creating the compression required for combustion and power generation.

Their primary functions include:

• Guiding piston movement
• Maintaining engine compression
• Providing a durable wear surface
• Dissipating combustion heat
• Supporting smooth, efficient engine operation

Precision cylinder bores are essential for achieving maximum engine performance, reliability and longevity.

Why Do Engine Cylinders Wear Out?

Over time, constant piston movement, high combustion temperatures and normal engine wear gradually affect the cylinder bores.

Common causes include:

• High mileage
• Poor lubrication
• Engine overheating
• Worn piston rings
• Dirt or debris entering the engine
• Corrosion following prolonged storage

As wear develops, compression falls, oil consumption increases and engine performance deteriorates.

Why Upgrade to a 96mm Big Bore Kit?

A 96mm Big Bore Cylinder Kit offers more than simply replacing worn cylinders—it provides the opportunity to increase engine displacement and improve performance during a rebuild.

Benefits include:

• Increased engine capacity
• Improved torque throughout the rev range
• Stronger acceleration
• Excellent foundation for performance engine builds
• Direct installation into 1.7, 1.8 and 2.0-litre crankcases without machining
• Durable cast iron construction for long service life

It is a popular upgrade for enthusiasts looking to extract additional performance from the proven Type 4 engine while retaining excellent reliability.

When Should They Be Replaced?

Replacement or upgrading is recommended if:

• Compression readings are below specification
• Cylinder bores are worn, tapered or scored
• Oil consumption has increased
• The engine is undergoing a complete rebuild
• Greater engine capacity is desired
• Heat damage or corrosion is present

Installing new cylinders during an engine rebuild restores compression while providing the opportunity to increase engine performance with minimal additional modification.

Porsche 914 Type 4 Engine Rebuild & Performance Components

The Type 4 engine is renowned for its strength and versatility, making it an excellent platform for both restoration and performance upgrades. During an engine rebuild, replacing worn cylinders not only restores compression and reliability but also provides an ideal opportunity to increase engine capacity with a proven big bore conversion.

The 96mm Big Bore Cylinder Kit offers an easy installation into all 1.7, 1.8 and 2.0-litre crankcases without the expense of machining the crankcase itself. Combined with quality pistons and correctly prepared cylinder heads, it provides improved torque, stronger performance and dependable long-term reliability.

Benefits of the 96mm Big Bore Cylinder Kit

• Increases engine capacity and torque
• Direct fit into all Type 4 crankcases
• No crankcase machining required
• Durable cast iron construction
• Restores engine compression
• Excellent foundation for performance engine builds OE-quality fitment and reliability

Piston Set Needed
1.7ltr / 1.8ltr - VW9600T4S66P
2.0ltr - VW9600T4S71P

Aluminium Biral 96mm Big Bore Cylinder Kit – Set of 4

Upgrade the performance and durability of your Porsche 914 engine with this OE Match 96mm Aluminium Biral Big Bore Cylinder Kit, designed for Volkswagen Type 4 engines fitted to the Porsche 914.

Fits:

• Porsche 914 (1970-1976)

Manufactured using Aluminium Biral construction, these premium cylinders combine an aluminium outer body with a cast iron cylinder liner. This proven design offers the outstanding heat dissipation of aluminium while retaining the durability and wear resistance of a cast iron bore, making them an ideal choice for both fast road and performance engine builds.

The kit is designed to slip directly into any 1.7, 1.8 or 2.0-litre Type 4 crankcase without requiring crankcase machining, making installation straightforward during an engine rebuild.

Please Note:

Fits all 1.7, 1.8 and 2.0-litre Type 4 crankcases with no crankcase machining required. 1.7-litre cylinder heads must be machined to accept the larger 96mm cylinder diameter.

Whether you're rebuilding a tired engine or increasing engine capacity, this Aluminium Biral cylinder kit provides improved cooling, enhanced reliability and excellent long-term performance.

What Do Engine Cylinders Do?

Engine cylinders form the precision-machined bores in which the pistons travel, creating the compression required for efficient combustion and power production.

Their primary functions include:

• Guiding piston movement
• Maintaining engine compression
• Providing a durable wear surface
• Transferring combustion heat away from the engine
• Supporting smooth, efficient engine operation

The quality and condition of the cylinders directly influence engine power, oil consumption and reliability.

Why Do Engine Cylinders Wear Out?

After years of use, continual piston movement and repeated thermal cycling gradually wear the cylinder bores.

Common causes include:

• High engine mileage
• Poor lubrication
• Engine overheating
• Worn piston rings
• Dirt or debris entering the engine
• Corrosion during long-term storage

As cylinder wear increases, compression falls, oil consumption rises and overall engine performance deteriorates.

Why Upgrade to Aluminium Biral Cylinders?

Aluminium Biral cylinders provide significant advantages over conventional cast iron cylinders, particularly in high-performance or demanding driving conditions.

Benefits include:

• Superior heat dissipation for improved cooling
• Reduced operating temperatures
• Greater resistance to heat-related distortion
• Lightweight aluminium construction
• Durable cast iron liner for excellent wear resistance
• Increased engine capacity with the 96mm big bore design
• Ideal for fast road, touring and performance applications

The improved cooling characteristics help maintain more consistent engine temperatures, contributing to enhanced reliability and engine longevity.

When Should They Be Replaced?

Replacement or upgrading is recommended if:

• Compression readings are below specification
• Cylinder bores are worn, tapered or scored
• Oil consumption has increased significantly
• The engine is undergoing a complete rebuild
• Increased engine capacity and improved cooling are desired
• Heat damage or corrosion is present

Installing new Biral cylinders during an engine rebuild restores compression while providing a worthwhile performance and reliability upgrade.

Porsche 914 Type 4 Engine Rebuild & Performance Components

The Porsche 914 Type 4 engine is an excellent platform for both restoration and performance enhancement. During a rebuild, upgrading to Aluminium Biral cylinders offers a substantial improvement in cooling efficiency while increasing engine capacity with the proven 96mm big bore configuration.

Unlike conventional cast iron cylinders, Biral cylinders combine the excellent thermal conductivity of aluminium with the wear resistance of cast iron liners. The result is more stable operating temperatures, improved reliability and enhanced performance, particularly during spirited road driving and extended touring.

With no crankcase machining required, this kit offers one of the simplest and most effective upgrades available for Type 4 engines.

Benefits of the Aluminium Biral Big Bore Cylinder Kit

• Increased engine capacity and torque
• Superior heat dissipation
• Improved cooling efficiency
• Lightweight aluminium construction
• Durable cast iron cylinder liners Direct fit into 1.7, 1.8 and 2.0 Type 4 crankcase
• No crankcase machining required Ideal for road, touring and performance builds       

Piston Set Required
1.7ltr / 1.8ltr - VW9600T4S66P
2.0ltr - VW9600T4S71P

Long Cast Iron Cylinder Kit – Set of 4

Build the ultimate high-capacity Type 4 engine with this OE Match Long Cast Iron Cylinder Kit, designed for Volkswagen Type 4 engines fitted to the Porsche 914 and Porsche 912E.

Fits:

• Porsche 914 (1970-1976)
• Porsche 912E 4CYL 1976

Available in 103mm, 104mm or 105mm bore sizes, these premium cast iron cylinders are specifically manufactured for long stroke and long connecting rod engine builds. Each cylinder is 14.6mm longer than a standard Type 4 cylinder and is supplied ready to be cut to the required height, allowing engine builders to achieve the exact deck height for custom performance applications.

Manufactured from high-strength cast iron for exceptional durability and wear resistance, these cylinders are intended for serious performance and competition engines where precision and flexibility are essential.

Please Note:
Available in 103mm, 104mm and 105mm bore sizes. Both the cylinder heads and crankcase must be machined to accept the larger bore. Cylinders are 14.6mm longer than standard and are designed to be cut to fit for long stroke or long rod engine combinations. Professional engine machining and assembly are recommended.

What Do Engine Cylinders Do?

Engine cylinders provide the precision-machined bores in which the pistons travel, forming the combustion chambers that generate engine power.

Their primary functions include:

• Guiding piston movement
• Maintaining combustion chamber compression
• Providing a durable wear surface
• Dissipating combustion heat
• Supporting efficient engine operation and reliability

Cylinder accuracy is critical for achieving optimum compression, oil control and long-term engine performance.

Why Do Engine Cylinders Wear Out?

Engine cylinders are continually exposed to high temperatures, combustion pressures and piston movement throughout their service life.

Common causes of wear include:

• High mileage
• Poor lubrication
• Engine overheating
• Worn piston rings
• Dirt or debris entering the engine
• Detonation and excessive engine loads

As the cylinder bores wear, compression decreases, oil consumption rises and engine performance gradually deteriorates.

Why Upgrade to Long Big Bore Cylinders?

Long cylinders are specifically designed for custom Type 4 engine builds using long stroke crankshafts or longer connecting rods.

Their extended length provides engine builders with additional material that can be machined to achieve the precise deck height required for a particular engine specification.

Benefits include:

• Suitable for custom long stroke engines
• Compatible with long connecting rod combinations
• Allows precise deck height adjustment
• Available in 103mm, 104mm and 105mm bore sizes
• Increases engine capacity and performance potential
• Strong cast iron construction for maximum durability
• Ideal for high-performance road and motorsport engines

This flexibility makes them the preferred choice for bespoke engine builds where maximum performance and accurate engine geometry are essential.

When Should They Be Replaced?

Replacement or upgrading is recommended when:

• Cylinder bores are worn, tapered or scored
• Compression readings are below specification
• Oil consumption has increased significantly
• The engine is undergoing a complete performance rebuild
• A long stroke or long rod engine is being built
• Existing cylinders have suffered heat damage or corrosion

Installing a new long cylinder kit during an engine build provides the foundation for a reliable, high-performance Type 4 engine.

Porsche 914 & 912E Type 4 Performance Engine Components

When building a custom Type 4 engine, every component must work together to achieve the desired capacity, compression ratio and deck height. Long cylinders provide the flexibility required for stroked crankshaft and long connecting rod combinations, allowing experienced engine builders to machine the cylinders to the exact dimensions needed for a precision-built engine.

Manufactured from durable cast iron, these OE Match long cylinders are engineered for demanding applications where strength, reliability and accurate machining are essential. Whether you're building a powerful fast road engine or a dedicated competition motor, they provide the ideal foundation for a bespoke Type 4 build.

Benefits of the Long Cast Iron Cylinder Kit

• Available in 103mm, 104mm and 105mm bore sizes
• Specifically designed for long stroke and long rod engines
• 14.6mm extra cylinder length for custom machining
• Increases engine capacity and performance potential
• Durable cast iron construction
• Excellent wear resistance
• Precision engineered for professional engine builders       

Cast Iron Big Bore Cylinder Kit – Set of 4

Take your Porsche 914 engine build to the next level with this Cast Iron Big Bore Cylinder Kit, available in 103mm, 104mm or 105mm bore sizes for Volkswagen Type 4 engines fitted to the Porsche 914.

Fits:

• Porsche 914 (1970-1976)       

Manufactured from high-quality cast iron, these precision-machined cylinders are designed for serious performance engine builds where increased engine capacity and power are the primary objectives. The robust cast iron construction provides exceptional wear resistance and long-term durability, making them ideal for high-performance naturally aspirated or motorsport applications.

Please Note: This is a true big bore conversion and requires machining of both the crankcase and cylinder heads to accept the larger cylinder diameter. Professional engine building and machining are essential for correct installation.

Whether you're building a fast road engine or a competition-specification Type 4, this OE Match cylinder kit provides the strength and precision required for demanding applications.

What Do Engine Cylinders Do?

The engine cylinders form the bores in which the pistons travel, creating the compression required for combustion and power production.

Their primary functions include:

• Guiding piston movement
• Maintaining combustion chamber compression
• Providing a hard-wearing cylinder surface
• Dissipating combustion heat
• Supporting efficient and reliable engine operation

Accurate cylinder dimensions are critical to engine performance, oil control and longevity.

Why Do Engine Cylinders Wear Out?

Over time, the cylinder bores are subjected to continual piston movement, high temperatures and combustion pressures.

Common causes of wear include:

• High engine mileage
• Poor lubrication
• Engine overheating
• Worn piston rings
• Dirt or debris entering the engine
• Detonation or excessive engine loads

As cylinder wear increases, engine compression falls, oil consumption rises and overall performance deteriorates.

Why Upgrade to a Big Bore Cylinder Kit?

A big bore conversion is one of the most effective ways of increasing the displacement and performance potential of a Type 4 engine.

Benefits include:

• Increased engine capacity
• Higher torque throughout the rev range
• Greater horsepower potential
• Improved throttle response
• Ideal foundation for high-performance engine builds
• Strong cast iron construction for excellent durability

Available in 103mm, 104mm and 105mm bore sizes, these cylinders provide maximum flexibility for bespoke engine builds.

When Should They Be Replaced?

Replacement or upgrading is recommended if:

• Cylinder bores are worn, tapered or scored
• Compression readings are below specification
• Oil consumption has increased significantly
• The engine is being completely rebuilt
• A larger engine capacity is required
• Existing cylinders have suffered heat damage or corrosion

Installing a new cylinder kit during an engine rebuild restores engine integrity while providing the opportunity to significantly increase engine performance.

Porsche 914 Type 4 Performance Engine Components

For enthusiasts seeking maximum performance from the Type 4 engine, a big bore cylinder conversion offers substantial gains in engine capacity and power potential. Larger bore cylinders allow builders to create bespoke engine combinations capable of delivering significantly improved torque and horsepower when matched with the appropriate pistons, cylinder heads, camshaft and induction system.

These OE Match cast iron cylinders are engineered for strength, durability and precision, making them an excellent choice for demanding performance builds where reliability is just as important as outright power.

Benefits of the Cast Iron Big Bore Cylinder Kit

• Available in 103mm, 104mm and 105mm bore sizes
• Significantly increases engine displacement
• Improves torque and horsepower potential
• High-strength cast iron construction
• Excellent wear resistance
• Ideal for custom performance engine builds
• Precision engineered for professional installation       

90mm Cylinder Kit – Set of 4

Restore the performance and reliability of your classic Porsche engine with this 90mm Cylinder Kit, designed for 1700cc Volkswagen Type 4 engines fitted to the Porsche 914.
 
Fits:

• Porsche 914 (1970-1976)  

Manufactured to OE specifications, this high-quality cylinder kit provides an ideal replacement for worn or damaged original cylinders during an engine rebuild. Precision machined for excellent fitment and sealing, the cylinders are engineered to deliver reliable compression, efficient heat dissipation and long service life.

Whether you're rebuilding a tired engine or carrying out preventative maintenance, this OE Match cylinder kit offers dependable quality and factory-style performance.

What Do Engine Cylinders Do?

The cylinders form the combustion chambers in which the pistons travel, creating the compression needed for efficient engine operation.

Their primary functions include:

• Guiding piston movement
• Providing a durable wear surface
• Maintaining engine compression
• Dissipating combustion heat
• Supporting efficient engine performance and reliability

Correct cylinder condition is essential for maintaining power output, oil control and overall engine efficiency.

Why Do Engine Cylinders Wear Out?

Over many thousands of miles, continual piston movement and combustion gradually wear the cylinder bores.

Common causes of deterioration include:

• Normal engine wear
• Poor lubrication
• Overheating
• Dirt or debris entering the engine
• Piston or piston ring damage
• Corrosion during long-term storage

As wear increases, compression falls and oil consumption often rises, reducing engine performance.

When Should They Be Replaced?

Cylinder replacement is recommended if:

• Compression readings are low
• Cylinder bores are worn or scored
• Oil consumption increases significantly
• Excessive piston clearance is measured
• The engine is being completely rebuilt
• Heat damage or corrosion is present

Replacing worn cylinders during an engine rebuild restores compression, improves reliability and helps return the engine to its original performance.

Porsche 914 Type 4 Engine Components

The air-cooled Type 4 engine relies on accurately machined cylinders to maintain compression, control oil consumption and deliver reliable performance. As the engine accumulates mileage, cylinder wear becomes inevitable, leading to reduced power, increased oil usage and lower overall efficiency.

Replacing worn cylinders as part of a complete engine rebuild helps restore factory performance while ensuring long-term reliability. OE Match engine components are manufactured to OE standards, making them an excellent choice for classic Porsche restorations and routine engine overhauls.

Benefits of Replacing the Cylinder Kit

• Restores engine compression
• Improves power and efficiency
• Helps reduce oil consumption
• Precision OE-style fitment
• High-quality heat-resistant construction
• Ideal for complete engine rebuilds       

93mm Cylinder Kit - Set of 4

Restore the performance and reliability of your classic air-cooled engine with this OE Match 93mm Cylinder Kit, designed for 1800cc Volkswagen Type 4 engines fitted to the Porsche 914.

Fits:

• Porsche 914 (1970-1976)

Manufactured to OE specifications, this high-quality cylinder kit is an ideal replacement for worn or damaged original cylinders during an engine rebuild. Precision machined for accurate fitment and sealing, the cylinders provide excellent compression, efficient heat dissipation and long-lasting durability.

Cylinders: Cast Iron.

Whether you're rebuilding a high-mileage engine or carrying out a complete restoration, this OE Match cylinder kit offers dependable quality and factory-style performance.

What Do Engine Cylinders Do?

Engine cylinders form the chamber in which the pistons travel, creating the compression required for combustion and power production.

Their primary functions include:
Guiding piston movement
Maintaining engine compression
Providing a hard-wearing cylinder bore
Dissipating combustion heat
Supporting efficient engine performance

Properly functioning cylinders are essential for maintaining power, fuel efficiency and oil control.

Why Do Engine Cylinders Wear Out?

Over time, constant piston movement, combustion temperatures and friction gradually wear the cylinder bores.

Common causes include:

• High mileage
• Poor lubrication
• Engine overheating
• Contamination from dirt or debris
• Worn piston rings
• Corrosion after long-term storage

As wear increases, compression falls, oil consumption rises and engine performance suffers.

When Should They Be Replaced?

Replacement is recommended if:

• Compression is below specification
• Cylinder bores are worn or scored
• Oil consumption increases
• Excessive piston-to-cylinder clearance is found
• The engine is undergoing a complete rebuild
• Heat damage or corrosion is present

Replacing worn cylinders restores engine efficiency, improves reliability and helps return the engine to its original performance.

Porsche 914 Type 4 Engine Components

The Type 4 engine fitted to the Porsche 914 depends on precision-engineered cylinders to maintain compression, control oil consumption and deliver smooth, reliable performance. As these engines age, cylinder wear becomes inevitable, leading to reduced power, increased oil usage and lower efficiency.

Replacing worn cylinders during an engine rebuild restores compression and reliability while helping preserve the character and performance of the original engine. OE Match components are manufactured to factory standards, making them an excellent choice for restoration and maintenance projects.

Benefits of Replacing the Cylinder Kit

• Restores engine compression
• Improves power and efficiency
• Helps reduce oil consumption
• OE-style precision fitment
• Durable heat-resistant construction
• Ideal for complete engine rebuilds

94mm Cylinder Kit – Set of 4

Restore the power, compression and reliability of your classic air-cooled engine with this OE Match 94mm Cylinder Kit, designed for 2000cc Volkswagen Type 4 engines fitted to the Porsche 914.

Fits:

• Porsche 914 (1970-1976)

Manufactured from high-quality cast iron, these replacement cylinders are precision machined to OE specifications and require no additional machining before installation, making them an excellent choice for both professional engine builders and home restorations. The robust cast iron construction offers outstanding wear resistance, excellent heat dissipation and long service life, helping to restore factory engine performance and reliability.

Whether you're rebuilding a worn engine or undertaking a complete restoration, this OE Match cylinder kit delivers dependable quality and OE-style fitment.

What Do Engine Cylinders Do?

Engine cylinders provide the precision-machined bore in which the pistons travel, creating the compression required for efficient combustion and power production.

Their primary functions include:

• Guiding piston movement
• Maintaining engine compression
• Providing a durable wear surface
• Dissipating combustion heat
• Supporting smooth, efficient engine operation

Healthy cylinders are essential for maintaining power, fuel efficiency and correct oil control.

Why Do Engine Cylinders Wear Out?

After years of service, continual piston movement and repeated heat cycles gradually wear the cylinder bores.

Common causes include:

• High engine mileage
• Poor lubrication
• Engine overheating
• Worn piston rings
• Dirt or debris entering the engine
• Corrosion following long-term storage

As cylinder wear increases, engine compression falls, oil consumption rises and overall performance declines.

When Should They Be Replaced?

Cylinder replacement is recommended if:

• Compression readings are below specification
• Cylinder bores are worn, tapered or scored
• Oil consumption has noticeably increased
• Excessive piston-to-cylinder clearance is measured
• The engine is undergoing a complete rebuild
• Heat damage or corrosion is present

Replacing worn cylinders during an engine rebuild restores compression, improves reliability and helps return the engine to its original performance.

Porsche 914 Type 4 Engine Components

The 2.0-litre Type 4 engine relies on precision-engineered cylinders to maintain compression, control oil consumption and deliver the performance expected from Porsche's air-cooled flat-four. As engines accumulate mileage, cylinder wear can reduce power, increase oil consumption and affect overall reliability.

Replacing worn cylinders during an engine rebuild restores engine efficiency while helping extend the life of pistons, piston rings and other internal components. OE Match cast iron cylinders are manufactured to factory standards, providing dependable performance and direct installation without the need for additional machining.

Benefits of Replacing the Cylinder Kit

• Restores engine compression
• Improves power and throttle response
• Helps reduce oil consumption
• Durable cast iron construction
• Ready to install with no machining required
• OE-style fitment for reliable performance

Cylinders with piston set, Flat top 90x66mm.



Fits: Porsche 914, Type 4

Engine size: 1700cc
Stroke: For 66mm stroke crankshafts
Pistons: Hypereutectic aluminium alloy
Compression Height: 42mm

Set includes: 4 pistons, 4 cylinders, 4 pins and a set of rings.

Flat Top Piston Set, 24mm Pin.
Restore engine performance or build a high-capacity air-cooled engine with this OE Match Flat Top Piston Set with 24mm Gudgeon Pin. Produced to OE-style specifications, this precision-engineered piston set is designed for compatible classic Porsche applications using the same engine platform where applicable. Manufactured from premium high-strength aluminium alloy, these flat top pistons provide exceptional durability, precise dimensional accuracy, and excellent heat dissipation for dependable long-term performance. The 24mm gudgeon pin configuration delivers secure piston-to-connecting rod installation, making this set ideal for performance engine builds, complete engine rebuilds, and restoration projects.

Fits:

Stroke: 71 to 78mm
Pistons: Hypereutectic aluminium alloy
Compression Height: 35.50mm
Pin: 24mm

Set includes: 4 pistons, 4 pins and a set of rings.

The piston set converts combustion pressure into rotational force by transferring energy through the connecting rods to the crankshaft. The flat top piston design promotes efficient combustion while maintaining the intended compression characteristics for compatible engine configurations. Precision-machined 24mm gudgeon pin bores ensure accurate alignment and smooth piston movement under demanding operating conditions. Over time, pistons can become worn or damaged through excessive heat, detonation, lubrication failure, or prolonged engine use, resulting in reduced compression, excessive oil consumption, piston slap, and poor engine performance. Replacing worn pistons restores engine efficiency, smooth operation, and long-term reliability.  

What This Product Does:

• Converts combustion pressure into crankshaft rotation.
• Features a precision 24mm gudgeon pin design.
• Restores engine compression and combustion efficiency.
• Supports smooth piston movement within the cylinders.
• Provides reliable sealing when used with new piston rings.
• Improves engine performance and reduces oil consumption.
• Replaces worn, damaged, or heat-affected pistons.
• Provides an OE-style fit for straightforward engine rebuilding.

Symptoms Of Wear Or Failure:

• Low engine compression.
• Excessive oil consumption.
• Blue exhaust smoke caused by oil burning.
• Piston slap or knocking noises.
• Loss of engine power or acceleration.
• Damaged piston crowns or cracked ring lands.
• Excessive cylinder blow-by.
• Damage identified during engine overhaul.

Why Replacement Matters:

• The pistons are among the most highly stressed components within the engine, converting combustion energy into mechanical power while maintaining compression and efficient combustion. Worn or damaged pistons can reduce engine performance, increase oil consumption, create excessive blow-by, and accelerate wear throughout the engine. Correct piston and gudgeon pin fitment is essential for smooth operation, durability, and reliable power delivery.
• Replacing worn pistons with this OE Match Flat Top Piston Set restores engine compression, improves combustion efficiency, reduces oil consumption, and supports dependable engine performance. Manufactured as a direct replacement and produced to OE-style specifications, this OE Match Flat Top Piston Set with 24mm Gudgeon Pin provides reliable fit, performance, and durability for classic Porsche engine maintenance, performance upgrades, repairs, and restoration projects.

This is a new set of Type 4 2.0 liter 96mm flat top JE Pistons with Biral cylinders.



JE Forgings are made from 2618 Aluminium, They have a 0 offset with extra material under the top for the valve pockets. This set comes with a 34.6mm Compression Height and the 24mm Pin. The slightly smaller compression height allows you to easily build small stroked engines 71 to 78mm with the Standard length rods that have the 24mm pins. Biral Liners are a cast iron sleeve with aluminium fins, making them lighter and dissipate heat better.It is a Slip in kit no machine work is needed.

Engine Type : Porsche 914, VW Type 4, Bus or Sandrail.
Engine size: 2000cc
Stroke: 71 to 78mm
Cylinders: Biral
Pistons: Forged JE
Compression Height: 34.60mm
Pin: 24mm

Set includes: 4 pistons, 4 cylinders, 4 pins and a set of rings

This is a new set of Type 4 103mm flat top JE Pistons and Cylinders.



JE Forgings are made from 2618 Aluminium, They have a 0 offset with extra material under the top for the valve pockets. The Big Bore Cylinders are honed in house to exact tolerances. This set comes with a 30.08mm Compression Height with a 22mm Pin. The smaller compression height allows you to build large stroked engines 78 to 86mm using longer rods that have the 22mm pins giving you the option to Build 2.3L and bigger Engines. This is a Machine in kit you will need to open both the Heads and Case to install them.

Engine Type : Porsche 914, VW Type 4, Bus or Sandrail.
Engine size: 2865cc with 86mm Crank
Stroke: 78 to 86mm
Cylinders: cast iron
Pistons: Forged JE
Compression Height: 30.08mm
Pin: 22mm

Set includes: 4 pistons, 4 cylinders, 4 pins and a set of rings

This is a new set of Type 4 103mm flat top JE Pistons and cylinders.



JE Forgings are made from 2618 Aluminium, They have a 0 offset with extra material under the top for the valve pockets. The Big Bore Cylinders are honed in house to exact tolerances. This set comes with a 34.6mm Compression Height and the 24mm Pin. The slightly smaller compression height allows you to easily build small stroked engines 71 to 78mm with the Standard length rods that have the 24mm pins giving you the option to Build 2.3L and bigger Engines. This is a Machine in kit you will need to open both the Heads and Case to install them.

Engine Type : Porsche 914, VW Type 4, Bus or Sandrail.
Engine size: 2365cc with 71mm crank
Stroke: 71 to 78mm
Cylinders: Cast Iron
Pistons: Forged JE
Compression Height: 34.60mm
Pin: 24mm

Set includes: 4 pistons, 4 cylinders, 4 pins and a set of rings

This is a new set of Type 4 104mm flat top JE Pistons and Cylinders.



JE Forgings are made from 2618 Aluminum, They have a 0 offset with extra material under the top for the valve pockets. The Big Bore Cylinders are honed in house to exact tolerances. This set comes with a 30.08mm Compression Height with a 22mm Pin. The smaller compression height allows you to build large stroked engines 78 to 86mm using longer rods that have the 22mm pins giving you the option to Build 2.4L and bigger Engines. This is a Machine in kit you will need to open both the Heads and Case to install them.

Engine Type : Porsche 914, VW Type 4, Bus or Sandrail.
Engine size: 2921cc with 86mm Crank
Stroke: 78 to 86mm
Cylinders: cast iron
Pistons: Forged JE
Compression Height: 30.08mm
Pin: 22mm

Set includes: 4 pistons, 4 cylinders, 4 pins and a set of rings

This is a new set of Type 4 104mm flat top JE Pistons and cylinders.



JE Forgings are made from 2618 Aluminum, They have a 0 offset with extra material under the top for the valve pockets. The Big Bore Cylinders are honed in house to exact tolerances. This set comes with a 34.6mm Compression Height and the 24mm Pin. The slightly smaller compression height allows you to easily build small stroked engines 71 to 78mm with the Standard length rods that have the 24mm pins giving you the option to Build 2.4L and bigger Engines. This is a Machine in kit you will need to open both the Heads and Case to install them.

Engine Type : Porsche 914, VW Type 4, Bus or Sandrail.
Engine size: 2412cc with 71mm crank
Stroke: 71 to 78mm
Cylinders: Cast Iron
Pistons: Forged JE
Compression Height: 34.60mm
Pin: 24mm

Set includes: 4 pistons, 4 cylinders, 4 pins and a set of rings

This is a new set of Type 4 105mm flat top JE Pistons and Cylinders.



JE Forgings are made from 2618 Aluminum, They have a 0 offset with extra material under the top for the valve pockets. The Big Bore Cylinders are honed in house to exact tolerances. This set comes with a 30.08mm Compression Height with a 22mm Pin. The smaller compression height allows you to build large stroked engines 78 to 86mm using longer rods that have the 22mm pins giving you the option to Build 2.4L and bigger Engines. This is a Machine in kit you will need to open both the Heads and Case to install them.

Engine Type : Porsche 914, VW Type 4, Bus or Sandrail.
Engine size: 2978cc with 86mm Crank
Stroke: 78 to 86mm
Cylinders: cast iron
Pistons: Forged JE
Compression Height: 30.08mm
Pin: 22mm

Set includes: 4 pistons, 4 cylinders, 4 pins and a set of rings

This is a new set of Type 4 105mm flat top JE Pistons and cylinders.



JE Forgings are made from 2618 Aluminum, They have a 0 offset with extra material under the top for the valve pockets. The Big Bore Cylinders are honed in house to exact tolerances. This set comes with a 34.6mm Compression Height and the 24mm Pin. The slightly smaller compression height allows you to easily build small stroked engines 71 to 78mm with the Standard length rods that have the 24mm pins giving you the option to Build 2.4L and bigger Engines. This is a Machine in kit you will need to open both the Heads and Case to install them.

Engine Type : Porsche 914, VW Type 4, Bus or Sandrail.
Engine size: 2458cc with 71mm crank
Stroke: 71 to 78mm
Cylinders: Cast Iron
Pistons: Forged JE
Compression Height: 34.60mm
Pin: 24mm

Set includes: 4 pistons, 4 cylinders, 4 pins and a set of rings