GMG introduces the World Challenge sport muffler set and high flow sport catalyst with GMG's proprietary cross over center section. Designed as a fully modular system to be fuly interchangeable with the all the factory components.

GMG World Challenge sport mufflers are made of T304 stainless steel and are fully tig welded, GMG uses its F1 sport muffler design which incorporates Different density packing through the mufflers to absorb unwanted sound and tune out unwanted exhaust frequencies. The system saves over 50% of weigth of the stock system and gives the 3.6 and 3.8 liter engines a tuned sound. An ideal set up for track cars or owners who want a more aggressive sound.

Fitment: 997.1 Carrera 3.6 and 3.8

Price $2195.00

To further increase performance GMG has developed the patented X cross over design center section. Unlike the factory system which divorces the left and right cylinder banks our sport center section with high flow 200 cell german made metal matrix catalyst Merges left and right cylinder banks improving the low end torque and throttle response while increasing power. Also made of T304 stainless steel that has been Tig welded by hand our center section improves not only the performance but also the sound of the engine. Our system can be used with the stock mufflers or any muffler system that is a direct replacement to the stock system. For optimum performance we do recommend using our WC sport muffler set with this package.

Price $2495.00

GMG Quad Tips Hand Made of T304 stainless steel, direct replacement tips. Dual 3" opening.

Price $745.00