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Porsche > 964 (911) (1989-1994) > 964 (911) RS 3.8L 1991-93 > Exhausts >

Sport Silencers / Mufflers

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DISPLAYING 17 to 19 (of 19 products)
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Exhaust Muffler / Silencer Rear box 1in 1out. Porsche 964 Carrera - 96411104504, 96411104502
1
Exhaust Muffler / Silencer Rear box 1in 1out. Porsche 964 Carrera
FSPOR964MAXS
Product Information
Product Information
Fabspeed Maxflo Exhaust System ( 1in - 1out )

Improved sports car sound; deep and throaty while maintaining street appropriate volume

Features:
• Fits: all Porsche 964 C2, C4, RS America, Euro RS and Speedster vehicles 1989-1994
• Increased throttle response throughout the RPM range with less restrictive mufflers
• Available in either a single or dual outlet configuration
• NOTE: Requires slight modification to the factory rear bumper for proper fitment of the second outlet
• Constructed from high-quality 14-16ga CNC mandrel-bent T304L stainless steel for optimum flow and maximum durability
• Direct bolt-on replacement for the restrictive facotry muffler
• Includes Oval Style Tip(s)
• All Fabspeed performance products are backed by the Fabspeed Lifetime Limited Warranty.

Please note: This is a special-order item manufactured to order. In some cases, please allow 4 – 5 weeks for the delivery. Special order items cannot be cancelled from this supplier once your order has been placed.

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

FSPOR964MAXS
96411104504
96411104502

The product you are viewing cross references to these numbers
Exhaust Muffler / Silencer Rear box 1in 2out. Porsche 964 Carrera - 96422096402, 96411104504, 96411104502
1
Exhaust Muffler / Silencer Rear box 1in 2out. Porsche 964 Carrera
FSPOR964MAXD
Product Information
Product Information
Fabspeed Maxflo Exhaust System ( 1in - 2out )

Optional Dual Outlet upgrade; Requires slight modification to the factory rear bumper for proper fitment of the second outlet

Improved sports car sound; deep and throaty while maintaining street appropriate volume

Features:
• Fits: all Porsche 964 C2, C4, RS America, Euro RS and Speedster vehicles 1989-1994
• Increased throttle response throughout the RPM range with less restrictive mufflers
• Available in either a single or dual outlet configuration
• NOTE: Requires slight modification to the factory rear bumper for proper fitment of the second outlet
• Constructed from high-quality 14-16ga CNC mandrel-bent T304L stainless steel for optimum flow and maximum durability
• Direct bolt-on replacement for the restrictive facotry muffler
• Includes Oval Style Tip(s)
• All Fabspeed performance products are backed by the Fabspeed Lifetime Limited Warranty.

Please note: This is a special-order item manufactured to order. In some cases, please allow 4 – 5 weeks for the delivery. Special order items cannot be cancelled from this supplier once your order has been placed.



Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

FSPOR964MAXD
96422096402
96411104504
96411104502

The product you are viewing cross references to these numbers
Exhaust Muffler / Silencer Rear box Race System DesignTek for Porsche 964 - 3606006401, 116081, 69-PS101, 96411104504, 96411104605, 96411104205, 96411321316, 96411321315, 96411104502, 96421104004, 96421103905, 96421103932
6
Exhaust Muffler / Silencer Rear box Race System DesignTek for Porsche 964
3606006401
Product Information
Product Information
Exhaust Muffler / Silencer Rear box Race System

designtek

DesignTek Maximum power and aggressive sports car sound exactly like the factory 3.8L Supercup 964's. primarily intended for the track or race. This system has some resonance and is very sporty and aggressive. Please note this system bypass the cats and the heating system of the car.

This kit includes:
Headers
Rear Box
This kit does not include the CATS. Header to engine gaskets are not included. You can add them to the basket when you buy this exhaust.


Manifold to Head internal diameter is 39MM

Manifold to Rear silencer internal diameter is 56MM




Fits:
Porsche 964 1990-94





Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

3606006401
3606006401
116081
69-PS101
96411104504
96411104605
96411104205
96411321316
96411321315
96411104502
96421104004
96421103905
96421103932

The product you are viewing cross references to these numbers
DISPLAYING 17 to 19 (of 19 products)
1 2
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About Sport Silencers / Mufflers

Porsche Sport Silencers & Mufflers - Performance Sound & Exhaust Upgrades

Sport Silencers / Mufflers are designed to enhance the sound, performance, and driving character of your Porsche by improving exhaust gas flow and delivering a more engaging exhaust note. Compared to standard exhaust silencers, sports mufflers reduce restriction, sharpen throttle response, and provide a sportier tone that better reflects Porsche’s performance heritage.

Available from Design911, this category includes both genuine Porsche sport exhaust components and high-quality aftermarket performance mufflers, giving owners the choice between factory-engineered authenticity and performance-focused customisation.

What Do Sport Silencers / Mufflers Do?

Sport silencers optimise exhaust flow while enhancing sound quality.

Core Functions:

  • Reduce exhaust backpressure for improved engine breathing.
  • Enhance throttle response and power delivery.
  • Produce a deeper, sportier exhaust note.
  • Improve exhaust efficiency and flow dynamics.
  • Enhance the overall driving experience.

A well-designed sports muffler balances performance gains with refined sound control.

Why Do Standard Exhaust Silencers Fail or Fall Short?

Standard exhaust mufflers are designed primarily for noise reduction, emissions compliance, and longevity. Over time, common issues include:

  • Internal corrosion from condensation and heat cycles.
  • Restrictive baffling limiting exhaust flow.
  • Dull or muted exhaust sound.
  • Internal baffle breakdown causing rattles.
  • Reduced efficiency when paired with performance upgrades.

As these components age, both performance and sound quality can deteriorate.

Why Upgrade to Sport Silencers / Mufflers?

Sport silencers are engineered to improve both performance and auditory feedback.

Upgrade Benefits:

  • Improved exhaust flow and reduced restriction.
  • Enhanced exhaust sound without excessive drone.
  • Increased driving engagement and responsiveness.
  • Available in OEM Porsche or performance aftermarket options.
  • Ideal for road, touring, and spirited driving.

Upgrading delivers a more exciting exhaust character while supporting engine efficiency.

Highlights

  • Porsche sport silencer and muffler upgrades
  • OEM Porsche and premium aftermarket options
  • Improved exhaust sound, flow, and performance
  • Designed for performance-focused driving
  • High-quality materials for durability and reliability       

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