The new Large Bore-HD exhaust is engineered to perform in the most extreme environments. Constructed from 5" mandrel bent 409 stainless steel tubing for maximum flow, increased horsepower, increased torque and lower EGT's. This system is available in 5" turbo-back without muffler. This Large Bore-HD exhaust system comes with all the necessary hardware for a clean and simple installation.
Installation is a Snap:
Large Bore-HD exhaust systems utilize a 2-piece tailpipe design for a perfect fit by allowing adjustability at the tailpipe section. All systems use factory mounting locations providing stability and hassle-free installation.
High quality OE style flange and band clamps are used for a complete 360 degree sealing surface.
A muffler delete-pipe is used for a true race-inspired sound and maximum flow.
OE style bayonet hangers are used to maintain a stable pipe location during high vibration and high heat conditions. The Bayonet tip holds the hanger bushing in place for an OE style fit that does not change with time.
Flow and Performance:
Large Bore-HD exhaust systems are constructed of 5" mandrel bent stainless steel tubing for maximum flow. Smooth transition bends allow for low turbulence, increasing horsepower, torque and lowering EGT's.
Note: This is a "Race Only" product used solely for competition. Its use is limited to closed-course and open-course racing that is formally sanctioned by a recognized racing organization. Any other use including recreational off-road use could be in violation of local, state and federal laws.
Year Make Model SubModel Engine Fuel 2001-2003 Chevrolet Silverado HD 2500HD/3500HD (LB7) Duramax Turbo Diesel V8 6.6L Diesel 2004-2005 Chevrolet Silverado HD 2500HD/3500HD (LLY) Duramax Turbo Diesel V8 6.6L Diesel 2006-2007 Chevrolet Silverado HD 2500HD/3500HD (LLY/LBZ) Duramax Turbo Diesel V8 6.6L Diesel
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