This website uses cookies to ensure you get the best experience on our website. Learn more.
XR-1® Raceline
Featuring a patented uninterrupted-flow internal design and our Multicore technology, our XR-1® mufflers outflow a straight piece of pipe in repeated testing. For racing applications only!
Four important reasons racers win with Borla
- You fear what you can't hear. Especially in any kind of breakout drag racing where you can "sneak up" on an opponent
- Improved driver awareness. Drivers in all forms of racing can better tell what their cars are doing
- No loss in performance. Fact is, in some cases Borla's patented XR-1® mufflers actually improved horsepower over a straight piece of pipe
- Reduced driver fatigue. Very important in many forms of competition
Features
- T-304 stainless steel will never rust our thickest material
- 100% welded construction is track-tough
- Free-flow design for improved performance
- XR-1's race-proven design attenuates sound without restricting flow
- Hi-temp Continuous Filament Fiber (CRF) or T-304 Stainless Steel wool (depending on app) for sound control
- Sportsman mufflers feature hi-temp Continuous Filament Fiber (CFF) acoustic material for sound control
- Natural mill finish can be brushed or polished prior to installation
- Reversible design for installation flexibility
- Recommended for high-horsepower racing applications
XR-1® Raceline(3) 
Select 
Select 
Select
XR-1 Raceline
Part# 40641 What vehicle does this fit?

Has Valves FALSE
- Universal muffler. Reversible design. No BORLA® logo embossement.
- Bullet style muffler with neck on inlet end only
- Use on compact applications where no tail pipe or turn down is needed, or weld on your own
- 2.5" Center Inlet/ 2.5" Center Outlet (no neck) 3.5" Round x 14" Long Body 16.75" Overall Length
- Multi-Core 3 tube internal design. High temperature T-304 SS wool for sound control.
Price: $228.99
XR-1 Raceline
Part# 401012 What vehicle does this fit?

Has Valves FALSE
- Universal muffler. Reversible design.
- Designed for applications where a 6.25" round muffler body can be used
- Will work on a wide range of vehicles
- 3.5" Center Inlet/ 3.5" Center Outlet 6.25" Round x 14" Long Body 19.75" Overall Length
- Multi-Core 4 tube internal design
Price: $319.99
XR-1 Raceline
Part# 400024 What vehicle does this fit?

Has Valves FALSE
- Universal muffler. Reversible design.
- Long body design works well on SUV & truck applications
- Can be used on a wide range of vehicles
- 2.5" Center Inlet/ 2.5" Center Outlet 6.25" Round x 14" Long Body 18.5" Overall Length
- Multi-Core 6 tube internal design.
Price: $294.99
