The new Borla® cat-back systems for the 997 model is a perfect blend of exceptional performance and that exclusive Borla® tone. 915994 Cat-Back? features a full dual system which, thanks to the lightweight high quality austenitic stainless steel construction, is actually more than 10% lighter than the factory single muffler system. This 2 ¼" system is tuned for the non-turbo engine, boasting an impressive 325cfm greater air flow while generating solid double-digit horsepower numbers and torque gain numbers in the mid twenties. The 915994 system features four 3 ½" Intercooled, mirror polished stainless steel tips. The Borla® 915993 Cat-Back? system is similar, but features the 88mm round polished angle-cut tips (two per side). Cat Back Systems Now Available for both 3.6 and 3.8 Liter Engines!! Learn More

Performance increase over stock = 35+ HP Weight savings 30+lbs over stock-Complete system weighs 28 lbs Hand Crafted T304 Stainless steel Tig and Fuse welded Equal length design Decrease turbo lag and heat build up in turbo chargers 200 cell German Made Metal core catalyst OBD2 compliant Direct bolt on replacement CNC machined stainless steel flanges Hand made in the USA Designed tuned and tested on GMG's 997TT, the system is hand crafted of T304 stainless steel mandrel bent tubing, is TIG and fuse welded, features a proprietary (patent pending) cross over center section, stainless steel sport mufflers, OBD2 compliant German made 200 cell sport catalyst (No CEL lights) and is finished off with dual 3" bell shaped tips that are unique to GMG's design which are not only aggressive looking but fully functional as well. The system also offers a very unique machine like sound that is reminiscent of the Carrera GT with out any annoying interior drone or resonance. All systems are hand built per order and are available fully polished or in raw stainless finish for the motorsport minded individual. Learn More

The new Borla® cat-back systems for the 997 model is a perfect blend of exceptional performance and that exclusive Borla® tone. 915994 Cat-Back? features a full dual system which, thanks to the lightweight high quality austenitic stainless steel construction, is actually more than 10% lighter than the factory single muffler system. This 2 ¼" system is tuned for the non-turbo engine, boasting an impressive 325cfm greater air flow while generating solid double-digit horsepower numbers and torque gain numbers in the mid twenties. The 915994 system features four 3 ½" Intercooled, mirror polished stainless steel tips. The Borla® 915993 Cat-Back? system is similar, but features the 88mm round polished angle-cut tips (two per side). Cat Back Systems Now Available for both 3.6 and 3.8 Liter Engines!! Learn More