6.0 2500HD Flowmaster 40 series

warm start with new dual chamber muffler. 4x18 tips rest of truck is stock except for throttle body spacer. video doesnt really do any justice. The sound is so much deeper in person ... big step up from before... i have an old vid i will upload later.

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2011 Silverado Flowmaster Exhaust
40 Series Flowmaster... single in dual out.. 2 chamber. Installed at Jeff's Quality Muffler & Quick Oil Change in Oneonta, Alabama





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Questions? Give us a call (707) 544-4761 To view these products click below: http://www.flowmastermufflers.com/?page_id=10995 Subscribe to our Youtube channel: http://www.youtube.com/user/Flowmaster For updates and new product releases, ‘LIKE’ us on Facebook: http://www.facebook.com/FlowmasterMufflersINC Follow Flowmaster on Twitter: http://twitter.com/flowmaster1 Follow Flowmaster on Instagram: http://instagram.com/flowmaster_official/ Learn more about Flowmaster's unique Exhaust product lines.





Silverado Mud Grapplers Flowmaster 50
silverado. 3 1/2 inch lift 33 mud grappler 20 oem rims flowmaster 50 series dumped, single in dual out





Flowmasters vs Magnaflows on my 2003 Tahoe 5.3L
The First Sound is the Magnaflow Second sound is the Flowmasters




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