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Authorized Brand Dealer
Fulfillment From Multiple U.S. Warehouses
Enthusiast Owned & Supported
Easy Financing Available!
Authorized Brand Dealer
Fulfillment From Multiple U.S. Warehouses
Enthusiast Owned & Supported
Easy Financing Available!
Authorized Brand Dealer
Fulfillment From Multiple U.S. Warehouses
Enthusiast Owned & Supported
Easy Financing Available!
Authorized Brand Dealer
Fulfillment From Multiple U.S. Warehouses
Enthusiast Owned & Supported
Easy Financing Available!
Authorized Brand Dealer
Fulfillment From Multiple U.S. Warehouses
Enthusiast Owned & Supported
Easy Financing Available!
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Borla
Borla Boomer Thumper Oval Universal Muffler - 2.25in Inlet / 4in Round Tip (40057)
This product will be available for sale in 2 weeks, but you can pre-order now to receive 10% discount!
The Borla Boomer Thumper is a high-performance universal muffler engineered for street and track applications where exhaust flow and sound control are paramount. Utilizing Borla's patented race-winning technology, this muffler is designed to reduce backpressure while delivering a signature aggressive exhaust note. This is a universal-fit component requiring professional installation and custom piping.
Constructed entirely from aircraft-grade T-304 austenitic stainless steel, the 40057 features 100% welded seams for maximum structural integrity under high heat. The internal core is packed with high-temperature continuous-filament fiber (CFF) acoustic material, ensuring long-term sound control without the blowout issues common in inferior glass-packed mufflers.
- Inlet Diameter: 2.25in (2-1/4")
- Tip Diameter: 4in Round fully polished integrated tip
- Body Shape: Oval Thumper series
- Material: T-304 Austenitic Stainless Steel
- Finish: Fully polished body and tip
- Construction: 100% welded for durability
- Internal Packing: High-temp continuous-filament fiber (CFF)
- Manufacturing: Made in the USA
- Warranty: Borla Million-Mile Warranty
- Manufacturer Part Number: 40057
Choose your Location
-
Atlus
1340 Cobb Dr, Unit 1, Eustis, FL 32736
352-234-4458
Mon – Fri: 8:30 am – 4:30 pm
Sat: 9:00 am – 2:00 pm
Sun: Closed
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If you can find the part for a lower price from an authorized dealer/shop, we'll match the price! Reach out to Hello@AtlusAuto.com, our live chat located at the bottom right of your screen, or request an Atlas Price Guarantee, or visit our dedicated APG page to submit a request.
Borla Boomer Thumper Oval Universal Muffler - 2.25in Inlet / 4in Round Tip (40057)
This product will be available soon, but you can pre-order now to get on the list before others!
US Based Support - In Florida
30 Days Satisfaction Guarantee
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The Borla Boomer Thumper is a high-performance universal muffler engineered for street and track applications where exhaust flow and sound control are paramount. Utilizing Borla's patented race-winning technology, this muffler is designed to reduce backpressure while delivering a signature aggressive exhaust note. This is a universal-fit component requiring professional installation and custom piping.
Constructed entirely from aircraft-grade T-304 austenitic stainless steel, the 40057 features 100% welded seams for maximum structural integrity under high heat. The internal core is packed with high-temperature continuous-filament fiber (CFF) acoustic material, ensuring long-term sound control without the blowout issues common in inferior glass-packed mufflers.
- Inlet Diameter: 2.25in (2-1/4")
- Tip Diameter: 4in Round fully polished integrated tip
- Body Shape: Oval Thumper series
- Material: T-304 Austenitic Stainless Steel
- Finish: Fully polished body and tip
- Construction: 100% welded for durability
- Internal Packing: High-temp continuous-filament fiber (CFF)
- Manufacturing: Made in the USA
- Warranty: Borla Million-Mile Warranty
- Manufacturer Part Number: 40057
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