Enter your VAT number here and click Verify:
Your details have been verified. VAT number registered to:
,
.
Your order will now be zero rated for VAT purposes. We reserve the right to verify these details after your order request has been made and reinstate VAT if required.
Your VAT details were not recognised or were invalid. Your VAT number must be matched to your Billing Country as specified above. This is currently specified as . You do not need to enter the country code part of your VAT number as this has already been selected in your billing address details above.
The VAT number checking service is currently offline. Please supply your VAT details within the comments or special instructions field below and we will apply a VAT discount after placing your order request.
1 IN / 1 OUT
Sports Silencers
- Porsche 911 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)

1 x Stainless steel painted rear muffler
2 x Stainless steel heat exchangers with Ø41 mm outside tubing
1 x Stainless steel cross over pipe.
1 x Stainless steel intermediate pipe.
Fitting kit including nuts, bolts, gaskets and strap.
Fits:
Porsche 930 3.0L / 3.3L 1975-89
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
EXHAUSTKIT82
The product you are viewing cross references to these numbers
This kit is comprised of the following items:
- Porsche 911 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)

1 x Stainless steel painted rear muffler
2 x Stainless steel heat exchangers.
1 x Stainless steel cross over pipe.
1 x Stainless steel intermediate pipe.
Fitting kit including nuts, bolts, gaskets and strap.
Fits:
Porsche 930 3.0L / 3.3L 1975-89
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
EXHAUSTKIT80
The product you are viewing cross references to these numbers
This kit is comprised of the following items:
- Porsche 911 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)
MAXFLOW outperforms any and all other systems manufactured. Super strong heavy gauge thick 14 gauge T304SS Mirror polished finish. Show car quality! Stainless bracket included.No resonance and never too loud BUT with maximum. Huge reduction in TURBO lag.
FEATURES:
• Fits: all Porsche 911 Turbo 930 vehicles (1976-1989); USA and European cars
• Adds 15 whp for improved throttle response
• Improved sports car sound with a much deeper, more aggressive exhaust note
• Constructed with 3.0" 14-16 gauge T304L C.N.C. mandrel bent stainless steel tubing for maximum performance and durability
• Maxflo Mufflers are radius stress relieved, hydro-formed cases that are pulse TIG welded with 2000 degree ceramic fiber and stainless steel wool packing.
• Available in single or dual outlet configuration
• Includes Fabspeed's Deluxe Oval or Quad Style Tips
• Simple bolt-on installation to the stock or K27 Turbo
• 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.
FSPOR911TMAXS
The product you are viewing cross references to these numbers
Sports Silencers
Porsche 1 IN / 1 OUT Sports Silencers - Performance Sound & Flow Upgrades
1 IN / 1 OUT Sports Silencers are performance exhaust components designed to improve exhaust gas flow while enhancing the sound and character of your Porsche. Featuring a single inlet and single outlet design, these sports silencers balance improved performance with refined exhaust tone, making them ideal for road-driven and enthusiast-focused applications.
Available from Design911, Porsche 1 IN / 1 OUT sports silencers are engineered to reduce restriction, improve throttle response, and deliver a deeper, sportier exhaust note without excessive noise or drone.
What Do 1 IN / 1 OUT Sports Silencers Do?
Sports silencers manage exhaust flow and sound after the exhaust gases leave the engine.
Core Functions:
- Reduce exhaust backpressure for improved engine breathing.
- Enhance exhaust sound and tone.
- Improve throttle response and drivability.
- Maintain balanced exhaust flow characteristics.
- Support performance and aesthetic upgrades.
Efficient exhaust flow is essential for performance and sound optimisation.
Why Do Standard Exhaust Silencers Fail?
Factory silencers are designed for noise suppression and
longevity but can degrade or restrict performance over time. Common failure
causes include:
- Internal corrosion from heat and moisture.
- Restrictive internal baffling limiting exhaust flow.
- Increased backpressure reducing engine efficiency.
- Rattling or broken internal components.
- Incompatibility with performance tuning upgrades.
Failing silencers can cause power loss, poor sound quality, and unwanted exhaust noise.
Why Upgrade to a 1 IN / 1 OUT Sports Silencer?
Sports silencers are engineered to enhance both performance and sound.
Upgrade Benefits:
- Improved exhaust flow and reduced restriction.
- Deeper, sportier exhaust tone.
- Enhanced throttle response and power delivery.
- Lightweight, durable construction.
- Ideal for performance road and light track use.
Upgrading delivers a noticeable improvement in driving experience without compromising usability.
Highlights
- Porsche 1 IN / 1 OUT sports silencer upgrades
- Improved exhaust flow and performance
- Enhanced sound without excessive drone
- Designed for road and enthusiast use
- High-quality materials for durability