Universal Muffler Part # 40057

Muffler Tubing Size: 2.25" Inlet/ 4" Tip
Fits these Vehicles:

Thumper Boomers Muffler - 2.25" Center Inlet/ Single 4" Round Tip, 4.25" x 7.88" Oval x 14" Long Body 23.5" Overall Length. Universal Part.

MSRP : $286.99
Or buy from Borla (USA credit cards only):

BORLA® Boomers are full-blown, high-tech, dyno and race-proven mufflers for the street or track. These eye-popping, fully polished, T-304 stainless steel mufflers feature integrated polished tips, and utilize BORLA®'s patented race-winning technology for improved exhaust flow. In addition to adding head-turning sound, they also add a modest boost in horsepower. They utilize 100% welded construction for strength. High-temperature continuous-filament fiber (CFF) acoustic material for sound control. Natural mill finish can be brushed or polished prior to installation. Available in a variety of universal-fit styles, BORLA® Boomers are made in the USA from aircraft-grade high-quality T-304 austenitic stainless steel and include a Million-Mile Warranty.


This product in the physical form it is sold does not present a hazard. However, operations including, but not limited to welding, brazing, or thermal cutting can expose you to chemicals including Chromium, Nickel, Cobalt, Arsenic, Cadmium and Lead which are known to the State Of California to cause cancer, birth defects and other reproductive harm. For more information go to

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Available for this vehicle

Technical Specs
Muffler Config Muffler Shape Muffler Tubing Size Case Dimensions Muffler Oal
Center/Center Oval 2.25" Inlet/ 4" Tip 14" X 4.25" X 7.88" 23.50"
Shipping Info
Boxed Weight Box Size
12 32 x 8 x 8