Fabspeed 997 GT3 / GT3 RS Rennsport Muffler (06-09) (FS.POR.997GT3.RSMP)
SKU: 27972098485

Fabspeed 997 GT3 / GT3 RS Rennsport Muffler (06-09) (FS.POR.997GT3.RSMP)

Sale price$2176.62 Regular price$2418.47
Save 10%

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 8 - Jul 13

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

Fabspeed 997 GT3 / GT3 RS Rennsport Muffler (06-09) (FS.POR.997GT3.RSMP)The ULTIMATE OEM style high performance replacement muffler for your GT3! As many GT3 owners know, the OEM mufflers are prone to cracking, breaking and blowing out, particularly the titanium mufflers on GT3RS cars. We wanted to design a muffler replacement that not only fixed that issue but also improved on the OEM design. Using our 25+ years of air and water cooled experience, we took the valve open tubing to 2. 75in 70mm which is the optimal

The ULTIMATE OEM style high performance replacement muffler for your GT3! 

As many GT3 owners know, the OEM mufflers are prone to cracking, breaking and blowing out, particularly the titanium mufflers on GT3RS cars. We wanted to design a muffler replacement that not only fixed that issue but also improved on the OEM design. Using our 25+ years of air and water-cooled experience, we 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, we implemented our 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’s exhaust note and lack of drone, we mimicked Porsche’s 7 chamber design. This makes for a completely drone free muffler, even when running catless race headers! Pair this with our Side Muffler Muffler Bypass Pipes for the ultimate emissions compliant GT3 exhaust. 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 our 991.1 GT3RS test car, paired with our Side Muffler Muffler Bypass Pipes, the Rennsport Muffler picked up an impressive 27 ft/lbs of TQ down low at 3,200 RPM. From 2,900 RPM all the way to 5,700 RPM it picks up 10 WHP or more, and peak WHP is up from 446 to 454! That’s a gain of 8 WHP or 9 HP at the crank.

FEATURES:

  • Fits all Porsche 997 GT3 / GT3 RS vehicles 2006-2009 worldwide
  • Constructed from CNC cut T304L stainless steel
  • Designed from 3D scans of the OEM muffler so we can achieve perfect bolt-on fitment
  • Will not break or crack like OEM GT3 mufflers do
  • Incorporates our signature cast X-pipe for superior flow and exhaust scavenging
  • Paired with our Side Muffler Bypass Pipes this muffler adds +27 ft/lbs of TQ and +16 WHP or +18 HP at the crank!
  • 3 different tip options available
  • Completely retains PSE valved exhaust functionality
  • No Check Engine Light guaranteed
  • This cat-back system is emissions legal in all 50 states and the rest of the world
  • Built in house at Fabspeed Motorsport USA in Fort Washington, PA
  • Simple bolt-on installation, no cutting or welding required
  • All Fabspeed performance products are backed by the Fabspeed Lifetime Warranty
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 27972098485

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.7 ★★★★★
Based on 2168 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
S
Verified Purchase
Susan DiChiara
Fort Morgan, US
★★★★★ 5
Came next day and easy to install
Size: 26"+16"+10", Style: J-HOOK
Wipers fit perfectly and work great
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 12, 2026
A
Verified Purchase
Amazon Customer
West Palm Beach, US
★★★★★ 5
Worked and still working
Took my friend forever to put it in his car but when he finally did- zoom zoom. He is back in the road delivering your purchase and food. Fit was tight but most are, affordable part.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 13, 2026
E
Verified Purchase
Evgeny Ganzhula
Boise, US
★★★★★ 5
Fit perfectly
Perfect
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 6, 2026
J
Verified Purchase
Jeffrey W.
Boise, US
★★★★★ 5
Good product
Fits and works good
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 30, 2026
L
Verified Purchase
Lavon Aker
Phoenix, US
★★★★★ 4
Good value
I got this for my daughter and she has no complaints so far so good
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 7, 2026

recommand products