Kolektor wydechowy X Force GMC Sierra 2007-2013 1500 V8 5.3L stal nierdzewna - HS-GM2004 - Increase performance on your GMC Sierra thanks to a healthy reduction in exhaust back-pressure provided by the intricately designed XFORCE header system. Supplied as a pair of headers and link pipe to help your V8 breathe much more easily, the enlarged 1”7/8 stainless steel headers flow into 3” outlets and enable increased power and torque output versus the OE setup. Xforce offers a range of uniquely engineered and designed stainless steel bolt on exhaust systems. Theses exhaust systems bolt directly to existing mounting points making installation easy. They are built to perform well, with materials designed for longevity and like all Xforce exhaust systems they look great!The unique header design increases power throughout the rev range, while providing a great engine audio note – make it roar!