Muffler 40" Series 2.5" Dual In/3" Center Out Aggressive Flowmaster instrument-panel-lights Our Complete Brake Line Kits

Our Complete Brake Line Kits come with every metal line needed for your vehicle

This mandrel-bent system is designed to mount behind the factory catalytic converters

with an aggressive exterior sound with all of the performance benefits that you expect from Flowmaster

a pair of our high-quality valves to accommodate the factory exhaust actuators for when you really want to open up the sound

2007-2007 GMC Sierra 1500 Classic 294 CID

Muffler 40" Series 2.5" Dual In/3" Center Out Aggressive Flowmaster instrument-panel-lights Our Complete Brake Line KitsOverview: The Original 40 series muffler delivers an aggressive exterior and interior tone. If you're looking for that original Flowmaster sound this is the muffler is for you. Constructed of 16 gauge aluminized steel and fully MIG welded for maximum durability. Features: No internal packing to blowout Excellent Street Strip and Off Road application Aggressive Sound Exterior Exhaust Tone Durable fully welded 16 gauge aluminized steel Specs: Body