Please wait… 
Please wait while we process your order,
do not press the back button… 
Design 911 Design 911 supply Porsche parts, Porsche spares and Porsche accessories, to both retail and to the trade. Our Porsche product and accessory range includes brakes, exhausts, tyres, wheels and Porsche panels and interiors. https://d911api.datadial.net/images/schemaLogo.png https://d911api.datadial.net/images/schemaLogo.png +443456003478 https://d911api.datadial.net Facebook Instagram

Wössner Pistons

DISPLAYING 1 to 4 (of 4 products)
K9456DA
Product Information
Product Information
Wössner high compression forged piston kit.

wossner

Fits:
Porsche 911 SC 3.0 12v 1978-82

Suitable to use with Nikasil liners.

Specification
Technical information is sourced from Wössner's latest catalogue:

Part Number: K9456
Engine Type: 930.10
OE Bore Size: 95.00mm

Bore Sizes Available:
- 95.00mm - 2994.06cc, Compression Ratio: 11.5:1

Bore Size 95.00mm
Piston Size: 94.95mm – K9456DA
Over Size: 0mm
Displacement CC: 2993cc
Dome / Bowl Volume: 52.4cc
Wössner Comp Ratio: 11.5:1
Ring Part Number: 950XSY

Standard
Stroke: 70.40mm
Dome/Bowl Volume: +48.2cc
OE Comp. Ratio: 9.8:1
Comp. Height: 34mm
Valves Per Cylinder: 2
Cylinders: 6

Please CLICK HERE for Technical release – Piston / Con rod
orientation.


Wössner are regarded by Europe's leading motor sport engine builders as being the piston of choice when building an engine not only to perform, but to withstand the stresses and duress's of competition life. Wössner pistons feature a unique PTFE coating on the skirts and a grade of 4032 Alloy (T6) which allows the engine builder to run a closer piston to bore tolerance then he might do on another make of piston. This helps remove the slapping noise during cold start, common place among engines running forged pistons due to larger then OE bore clearances. The crowns of the pistons are also polished to better resist detonation on a high performance engine. Polishing allows a more even spread of heat inside the chamber which will help prevent "hot spots" on piston crowns. Price includes all piston rings and gudgeon pins.

Price shown is for complete engine set.
K9254
Product Information
Product Information
Wössner high compression forged piston kit

wossner

Fits:
Porsche 911 SC 3.0 12v 1980-83 (204PS)

Suitable to use with Nikasil liners.

Specification
Technical information is sourced from Wössner's latest catalogue:

Not for use with ALUSIL cylinders

Part Number: K9254
Engine Type: 930.10
OE Bore Size: 95.00mm

Bore Sizes Available:
- 95.00mm - 2994.06cc, Compression Ratio: 10.5:1
- 98.00mm - 3186.15cc, Compression Ratio: 11:1

Bore Size 95.00mm
Piston Size: 94.93mm – K9254DA
Over Size: 0mm
Displacement CC: 2994cc
Dome / Bowl Volume: +42.2cc
Wössner Comp Ratio: 10.5:1
Ring Part Number: 950XSY

Bore Size 98mm
Piston Size: 97.93mm – K9254D300
Over Size: 3mm
Displacement CC: 3186cc
Dome / Bowl Volume: +42.2cc
Wössner Comp Ratio: 11:1
Ring Part Number: 980XSY

Standard
Stroke: 70.4mm
Dome/Bowl Volume: +42.2cc
OE Comp. Ratio: 9.8:1
Comp. Height: 34mm
Valves Per Cylinder: 2
Cylinders: 6

Please CLICK HERE for Technical release – Piston / Con rod
orientation.


Wössner are regarded by Europe's leading motor sport engine builders as being the piston of choice when building an engine not only to perform, but to withstand the stresses and duress's of competition life. Wössner pistons feature a unique PTFE coating on the skirts and a grade of 4032 Alloy (T6) which allows the engine builder to run a closer piston to bore tolerance then he might do on another make of piston. This helps remove the slapping noise during cold start, common place among engines running forged pistons due to larger then OE bore clearances. The crowns of the pistons are also polished to better resist detonation on a high performance engine. Polishing allows a more even spread of heat inside the chamber which will help prevent "hot spots" on piston crowns. Price includes all piston rings and gudgeon pins.

Price shown is for complete engine set.
K1730DA
Product Information
Product Information
Wössner high compression forged piston kit

wossner

Fits:
Porsche 911 SC 3.0Ltr

Suitable to use with Nikasil liners.

Specification
Technical information is sourced from Wössner's latest catalogue:

Part Number: K1730DA
Engine Type: 930.10
OE Bore Size: 95.00mm

Bore Sizes Available:
- 95.00mm - 2994.06cc, Compression Ratio: 11.5:1

Bore Size 95.00mm
Piston Size: – K1730DA
Over Size: 0mm
Displacement CC: 2994cc
Dome / Bowl Volume: +51.60cc
Wössner Comp Ratio: 11.5:1
Ring Part Number: 950ZST-3

Standard
Stroke: 70.40mm
Dome/Bowl Volume: +48.2cc
OE Comp. Ratio: 9.8:1
Comp. Height: 34mm
Valves Per Cylinder: 2
Cylinders: 6

Please CLICK HERE for Technical release – Piston / Con rod
orientation.


Wössner are regarded by Europe's leading motor sport engine builders as being the piston of choice when building an engine not only to perform, but to withstand the stresses and duress's of competition life. Wössner pistons feature a unique PTFE coating on the skirts and a grade of 4032 Alloy (T6) which allows the engine builder to run a closer piston to bore tolerance then he might do on another make of piston. This helps remove the slapping noise during cold start, common place among engines running forged pistons due to larger then OE bore clearances. The crowns of the pistons are also polished to better resist detonation on a high performance engine. Polishing allows a more even spread of heat inside the chamber which will help prevent "hot spots" on piston crowns. Price includes all piston rings and gudgeon pins.

Price shown is for complete engine set.
K1720DA
Product Information
Product Information
Wössner high fast road forged piston kit.

wossner

Fits:
Porsche 911 SC 3.0

Suitable to use with Nikasil liners.

Specification
Technical information is sourced from Wössner's latest catalogue:

Part Number: K1720DA
Engine Type: 930.10
OE Bore Size: 95.00mm

Bore Sizes Available:
- 95.00mm - 2994.06cc, Compression Ratio: 10.5:1

Bore Size 95.00mm
Piston Size: – K1720DA
Over Size: 0mm
Displacement CC: 2994cc
Dome / Bowl Volume: +42.2cc
Wössner Comp Ratio: 10.5:1
Ring Part Number: 950XSY-3

Standard
Stroke: 70.40mm
Dome/Bowl Volume: +48.2cc
OE Comp. Ratio: 9.8:1
Comp. Height: 34mm
Valves Per Cylinder: 2
Cylinders: 6

Please CLICK HERE for Technical release – Piston / Con rod
orientation.


Wössner are regarded by Europe's leading motor sport engine builders as being the piston of choice when building an engine not only to perform, but to withstand the stresses and duress's of competition life. Wössner pistons feature a unique PTFE coating on the skirts and a grade of 4032 Alloy (T6) which allows the engine builder to run a closer piston to bore tolerance then he might do on another make of piston. This helps remove the slapping noise during cold start, common place among engines running forged pistons due to larger then OE bore clearances. The crowns of the pistons are also polished to better resist detonation on a high performance engine. Polishing allows a more even spread of heat inside the chamber which will help prevent "hot spots" on piston crowns. Price includes all piston rings and gudgeon pins.

Price shown is for complete engine set.
DISPLAYING 1 to 4 (of 4 products)
About Wössner Pistons

High-Strength Wössner Pistons for Performance, Durability & Precision Engine Rebuilds

Wössner pistons are engineered for drivers who demand exceptional strength, reduced weight and superior thermal stability from their engines. Manufactured from forged aluminium for maximum durability, Wössner pistons are designed to withstand high cylinder pressures, elevated temperatures and aggressive tuning—making them ideal for turbocharged, supercharged, high-compression and track-focused Porsche builds.

Whether rebuilding a road-going performance engine or constructing a high-output motorsport power unit, Wössner pistons offer outstanding reliability, enhanced power delivery and long-term durability.

What Wössner Pistons Do

Wössner pistons improve engine performance and reliability by:

  • Increasing strength and durability with forged alloy construction
  • Enhancing combustion efficiency through optimised crown shapes
  • Reducing reciprocating mass, improving throttle response
  • Supporting high RPM operation with stronger piston skirts
  • Maintaining consistent sealing via precision-machined ring lands
  • Managing extreme heat loads for turbocharged and high-compression engines
  • Reducing friction for smoother and more efficient operation

These pistons are specifically engineered to perform in demanding environments where standard components fall short.

Why Pistons Commonly Fail

Even high-performance engines can suffer piston failure due to extreme conditions or insufficient servicing. Common causes include:

  • Detonation or pre-ignition damaging ring lands or piston crowns
  • Thermal overload in turbocharged or high-output engines
  • Oil starvation leading to scuffing or seizure
  • Incorrect fuelling or tuning, creating lean combustion
  • High mileage wear, reducing skirt stability
  • Contamination from debris in the lubrication system
  • Excessive boost pressure, stressing cast pistons beyond their limits

Symptoms include blow-by, low compression, excessive oil consumption, knocking noises, or visible damage during engine teardown.

Why You Should Replace Your Pistons with Wössner Components

Upgrading to precision-engineered Wössner forged pistons designed to exceed original strength and performance characteristics provides significant benefits for any engine rebuild.

Advantages include:

  • Superior durability under high boost or performance driving
  • Stronger resistance to detonation and thermal fatigue
  • Improved compression retention and sealing efficiency
  • Reduced piston mass for enhanced engine response
  • Increased lifespan for performance and track applications
  • More consistent combustion and power delivery
  • Confidence when pushing the engine to its limits

Wössner pistons are a proven choice for rebuilders seeking motorsport-grade reliability and performance.

You may also like
Popular Models