Borla
Borla 40057 Boomer Muffler Thumper Oval 2-1/4in In 4in Side Round Out - #40057
Borla 40057 Boomer Muffler Thumper Oval 2-1/4in In 4in Side Round Out - #40057
Couldn't load pickup availability
Borla 40057 Boomer Muffler Thumper Oval 2-1/4in In 4in Side Round Out
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. This muffler features a 4' fully polished tip. 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.
Fitment
- Universal application — verify dimensions and compatibility before purchase.
- Manufacturer Part Number: 40057
Image is for reference only; actual product may vary by application.
CALIFORNIA PROPOSITION 65 WARNING: This product can expose you to chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.p65warnings.ca.gov.
Share
🛡️
Manufacturer's Warranty — Borla
▾
Manufacturer's Warranty — Borla
Borla exhaust systems are backed by Borla's Million-Mile Warranty against defects in materials and workmanship. Excludes EV-specific components, coatings, and moving/wear parts.
Warranty terms are set by the manufacturer and may change. Full details and claims are handled directly by Borla. Contact us if you need help with a warranty claim.
Q&A
No questions yet. Be the first to ask!