Borla Boomer Muffler Thumper Oval 2-1/4in In 4in Side Round Out
BOR40057
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.
- Universal muffler
- Integrated tips
- Fully polished
[connect via dynam
ic source]
[connect via dynamic source]
Fast & Reliable Delivery
At NoLimit Accessories Inc., we're committed to getting your order to you quickly and safely. Learn about our shipping times, rates, and delivery options below.
Order Processing Time All orders are carefully processed and prepared for shipment within 1-2 business days. Please note that orders placed on weekends or holidays will be processed on the next business day.
Shipping Rates & Delivery Estimates We offer competitive shipping rates calculated based on your location and order size. Your exact shipping cost and estimated delivery time will be calculated and displayed at checkout before you complete your purchase.
Order Tracking & Shipment Confirmation Once your order ships, you'll receive a Shipment Confirmation email with your tracking number(s). You can use this tracking number to monitor your package's journey. Please allow up to 24 hours for tracking information to become active in the carrier's system.
Damaged or Lost Packages While we take great care in packaging your order, we are not liable for products damaged or lost during shipping. If your order arrives damaged, please contact the shipping carrier directly to file a claim. We're here to help guide you through this process if needed.
International Shipping Currently, we ship to addresses within the United States only. We're working to expand our shipping options in the future.
Customer Support Have questions about your shipment or our shipping policy? Please don't hesitate to contact our customer service team for assistance.
- Made in the USA

