The Borla(r) 140645BC is a Cat-Back(tm) exhaust system for the Chevrolet Colorado and GMC Canyon trucks. The exhaust system is a direct bolt-on part for ease of installation. Specifically tuned for the 3.6L engine our S-Type Cat-Back(tm) delivers a sportier sound and a more exciting driving experience without any drone. It features a 4" T-304 stainless steel Black Chrome exhaust tip. Using Borla(r) Stainless Steel Polish p# 21461 is NOT recommended with these black chrome tips. We suggest cleaning the tips with hot water and a microfiber cloth. Bright Chrome is also available (PN 140645). For vehicles with Crew Cab and Long Bed (6' 2") 140.5" Wheelbase add Extension Pipe 60570. Using Borla(r) Stainless Steel Polish p# 21461 is NOT recommended with these black chrome tips. We suggest cleaning the tips with hot water and a microfiber cloth. Ultra-smooth mandrel bends ensure maximum flow & power and precision computer numerical control (CNC) manufacturing ensures an accurate fit. As you can expect from Borla(r) the exhaust is constructed using T-304 stainless steel and comes with a Million-Mile Warranty. Give your Colorado/ Canyon the sound it deserves bolt on a Borla(r). System Features: Cat-Back(tm) Exhaust System S-Type Sound Level T-304 Stainless Steel Construction 2.75" Pipe Diameter 4" T-304 Stainless Steel Black Chrome Tip No-Drone Million Mile Warranty