2007-2011 Silverado 2500HD/3500 Crew Cab 4" Exhaust Kit



our 4" single system increased the exhaust flow to 481 cfm at 10" of water from the factory 3-1/2" exhaust with 305 cfm at 10" of water.


Heartthrob Exhaust Inc.
60819 U.S. Hwy. 12 West
Litchfield, MN 55355
P:  320-693-0222
F:  320-693-8964
email:  mike@heartthrobexhaust.com



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