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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(5) 
XR-1 Raceline
Part# 40942 What vehicle does this fit?
Has Valves FALSE
- Universal muffler. Reversible design.
- 2.5" Center Inlet/ 2.5" Center Outlet 4.25" x 7.88" Oval x 16" Long Body 21" Overall Length
- Compact size is perfect for applications with limited space
- Un-Notched necks are designed for weld in installation
Price: $164.99
XR-1 Raceline
Part# 40941 What vehicle does this fit?
Has Valves FALSE
- Universal muffler. Reversible design.
- 2.5" Center Inlet/ 2.5" Center Outlet 4.25" x 7.88" Oval x 12" Long Body 17" Overall Length
- Compact size is perfect for applications with limited space
- Un-Notched necks are designed for weld in installation
Price: $149.99
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# 401392 What vehicle does this fit?
Pipe Diameter:2.5"
Has Valves FALSE
- Universal muffler. Reversible design.
- 2.5" Center Inlet/ 2.5" Center Outlet 5" Round x 15" Long Body, 20" Overall Length.
- Compact size is perfect for applications with limited space
- Un-Notched necks are designed for weld in installation
Price: $148.99
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
