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823 Flo-Pro 4" Cat-Back Exhaust - Aluminized - GM 2001-2005 EC-CC/SB-LB w/ 4 Bolt Flange

SKU: FP823
Manufacturer: FloPro Exhaust
FloPro's 4" Aluminized Cat-Back Exhaust for your 2001 - 2005 GMC/Chevy Duramax 6.6L LB7 / LLY - With Muffler, No Tip. This exhaust system is for trucks with an OEM 4 Bolt Flange coming off of the catalytic convertor.

PRODUCT DETAILS (click to expand)

Mftr. Part# 823
UPC 842974005137
Weight (lbs.): 70.00 lbs.
Dimensions: 18.50" x 57.50" x 12.00"

PRODUCT SPECS (click to expand)

Exhaust Type Cat Back
Brand FloPro
Finish Aluminized Steel
Includes Muffler(s) Yes
Includes Tip(s) No
Size 4"
$357.00 (CAD)
Documents & Articles

Fits: GMC/Chevy Duramax Diesel 2001-2005 6.6L 2500/3500 w/ LB7/LLY engine. Extended Cab, Long/Short box, SRW & DRW. Does not fit Suburban.

This exhaust system is for trucks with an OEM 4 Bolt Flange coming off of the catalytic convertor.

  • 4" Mandrel bent tubing for maximum flow
  • Lower Exhaust Gas Temperatures
  • More Pulling Power
  • Utilizes OEM Hangers
  • Increased Horsepower and Torque
  • Aluminized Steel material


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MBRP Exhaust Tip - 4" x 6" x 12" Angled Dual Wall Polished Stainless

SKU: MBT5072
$89.99 CAD
This dual wall MBRP exhaust tip fits 4" exhaust systems - it has a 4" inlet, 6" outlet, and is 12" long with an angled rolled end and a polished stainless finish. No welding required.