Description
Free ground shipping.
These mufflers are built to order. Our "In Stock" status does not include build time. Actual delivery time can be 1-3 weeks.
The ultimate OEM style, high performance muffler for your GT3.
Add 18 horsepower and 27 lb/ft of torque while reducing weight.
As many GT3 owners know, the OEM mufflers are prone to cracking, breaking and blowing out. Particularly the titanium mufflers on the GT3RS.
Fabspeed wanted to design a muffler replacement that fixed that issue. Not only fixed it, but also improved on the OEM design.
Using 25+ years of air and water-cooled experience, they took the valve open tubing to 2.75in (70mm) which is the optimal diameter for GT3 engines to have low restriction, but maintain high velocity and high GT3 pitch for the signature GT3 CUP car sound.
Then Fabspeed implemented their signature investment cast X-pipe for optimal exhaust scavenging. The X merges the two cylinder banks without creating any restriction in exhaust flow.
To maintain the factory muffler exhaust note and lack of drone, Fabspeed mimicked Porsche’s 7 chamber design. This makes for a completely drone free muffler, even when running catless race headers.
This muffler is guaranteed to never break or fail.
SOUND:
This muffler will have a very similar tone to the OEM muffler, however, it will be a bit louder with PSE turned on. It will also sound a bit smoother and higher pitched thanks to our signature X-pipe.
POWER:
On Fabspeed's 991 GT3RS test car paired with side muffler bypass pipes, the Rennsport muffler picked up an impressive 27 lb/ft of torque down low at 3,200 RPM.
From 2,900 RPM all the way to 5,700 RPM it picks up 10 wheel horsepower or more, and peak wheel horsepower is up from 446 to 454.
That’s a gain of 8 wheel horsepower or 9 horsepower at the crank.
FEATURES:
- Fits all 2014-16 Porsche 991 GT3/GT3 RS vehicles
- Constructed from CNC cut T304L stainless steel
- Designed from 3D scans of the OEM muffler for perfect bolt-on fitment
- Will not break or crack like the OEM GT3 mufflers do
- Incorporates a signature cast X-pipe for superior flow and exhaust scavenging
- Paired with Fabspeed's side muffler bypass pipes this muffler adds +27 lb/ft of torque and +16 wheel horsepower or +18 horsepower at the crank.
- 3 tip options available
- Retains PSE valved exhaust functionality
- No check engine light guaranteed
- This cat-back system is emissions legal in all 50 states
- Built in house at Fabspeed Motorsport USA in Fort Washington, PA
- Simple bolt-on installation. No cutting or welding required
- All Fabspeed products are backed by the Fabspeed Lifetime Warranty
NOTE:
- Requires OEM gaskets and hardware to be reused
- If they are not available here are the necessary part numbers.
- 2x Muffler band straps (99711111970)
- 2x Bolt for muffler band strap (90006736201)
- 2x Each Side Muffler to Center Muffler Gaskets (99711156390, 99711156190)