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Sinister Diesel 4" Stainless Steel Exhaust Kit for 2001-2007 Chevy Duramax 6.6L LB7/LLY/LBZ (Downpipe Back)

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Was: $478.67
Sale: $465.00
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Sinister Diesel Chevrolet and GMC LB7/LLY/LBZ Duramax 4-inch Stainless Exhaust System for 2001-2007 Silverado and Sierra 2500 and 3500

The high-performance stainless steel exhaust systems from Sinister Diesel are designed to maximize the horsepower and deliver more torque to the wheels of your Chevrolet or GMC Silverado or Sierra diesel truck with the LB7, LLY, or LBZ Duramax engine. Each Sinister Diesel Duramax exhaust system is precision cut and bent from 409 Stainless Steel for high corrosion resistance and easily bolts together using the included hardware and gaskets. This full 4-inch downpipe-back LB7, LLY, and LBZ Duramax diesel exhaust kit comes with all the components that you need to install a full stainless exhaust and muffler for any cab and bed configuration and includes an 18-inch muffler, a straight-pipe muffler replacement, and a polished stainless steel exhaust tip with a rolled edge and stamped Sinister Diesel logo.


  • 4-inch stainless LB7, LLY, and LBZ Duramax diesel downpipe-back exhaust system for Silverado and Sierra 2500 and 3500
  • 18? Muffler
  • Straight-pipe muffler replacement
  • Polished Sinister Diesel Exhaust tip


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  • Item Requires Shipping
  • 75.0 lbs.
  • W20.0000” x H20.0000” x L50.0000”
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