2011-2013 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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