Borla Boomer Thumper Oval Muffler 2-1/4in In 4in Out
Borla Boomer Thumper Oval Muffler 2-1/4in In 4in Out
Borla Boomer Thumper Oval Muffler 2-1/4in In 4in Out
Borla Boomer Thumper Oval Muffler 2-1/4in In 4in Out
Borla Boomer Thumper Oval Muffler 2-1/4in In 4in Out
Borla Boomer Thumper Oval Muffler 2-1/4in In 4in Out
Borla Boomer Thumper Oval Muffler 2-1/4in In 4in Out
Borla Boomer Thumper Oval Muffler 2-1/4in In 4in Out

Borla Boomer Universal Muffler - 2.25in Oval In / 4in Round Side Out - Thumper

Borla SKU: BOR40057
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Borla Boomers are dyno- and race-proven universal mufflers for street or track, fully polished in T-304 stainless with an integrated polished tip. This Thumper version takes a 2.25in oval inlet and exits through a 4in round side outlet, using Borla's patented flow technology to add head-turning sound and a modest horsepower gain. 100% welded construction with CFF acoustic packing.

Specifications

Type Boomer universal muffler (Thumper)
Inlet/Outlet 2.25in oval inlet / 4in round side outlet
Tip Integrated 4in polished tip
Material T-304 stainless steel - fully polished - 100% welded
Warranty Million-Mile Warranty
Fitment Universal
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