Product details:

Bolt-on an additional 17 HP over the factory exhaust system! Dynatech SuperMaxx stainless steel exhaust systems are engineered to give your Chevy Silverado/GMC Sierra 1500 or Hummer H2 V8 maximum performance both on and off road. These full length headers are designed to be a direct replacement fit for restrictive factory exhaust and catalytic converter systems, these systems are a great way to get that extra power you are looking for. Primary Tube