Porsche Muffler Bypass Pipes - 911 | 2014-2016 FS-POR-991GT3-SMBV 64450109700 Gain: +78 HP / +90

Gain: +78 HP / +90 TQ

5 right hand threaded lugs

Four required with the exception of the 928 model that requires eight

External Diameter of Box End (d1): 25

Porsche Muffler Bypass Pipes - 911 | 2014-2016 FS-POR-991GT3-SMBV 64450109700 Gain: +78 HP / +90Porsche Muffler Bypass Pipes For Porsche 991 GT3 (2014 2016), 991 GT3 RS (2016) Models. Introducing the Muffler Bypass Pipes, an optimized design engineered to replace the heavy and restrictive factory side mufflers on your Porsche 991 GT3 or GT3 RS (2014 2016). This upgrade delivers improved exhaust flow, a significant increase in sound, and substantial weight savings. Fabspeed's Side Muffler Bypass Pipes provide the ultimate track focused exhaust