High-performance T-304 stainless steel muffler for optimal exhaust flow.
The Borla XR-1 Series Exhaust Muffler is engineered for high performance and durability, constructed from aircraft-grade T-304 stainless steel. This bullet-shaped muffler features a compact design that fits in tight spaces, making it suitable for a variety of applications including hot street cars and street rods. Its patented uninterrupted-flow design and multi-core technology enhance exhaust gas velocity while minimizing back pressure.
This muffler incorporates unique frequency cancelling technology, allowing sound waves to travel between multiple core walls, which effectively reduces noise while maintaining a powerful exhaust note. The fully welded assembly ensures structural integrity without crimping, meeting stringent noise regulations. Additionally, the sound-absorbing stainless steel packing protects against burnout, ensuring longevity and performance under demanding conditions.
Features
- Features Patented Uninterrupted-Flow Design And Multi-Core Technology
- Built From Aircraft Grade High Quality T-304 Stainless Steel, Fully Welded Assembly, No Crimping
- Unique, Proprietary Frequency Cancelling Technology Makes Sound Waves Travel Between Multiple Core Walls While Also Increasing Exhaust Gas Velocity
- Meets The Strictest Noise Requirements And Use Sound-Absorbing Stainless Steel Packing To Protect Against Burnout
Specifications
- Manufacturer: Borla
- Manufacturer Part Number: 40641
- Shape: Round
- Inlet Position: Center Single
- Inlet Diameter (IN): 2-1/2 Inch
- Outlet Position: Center Single
- Outlet Diameter (IN): 2-1/2 Inch
- Universality: Semi-Universal
- Estimated Install Time (Hours): 1
- Case Diameter (IN): 3-1/2 Inch
- Case Length (IN): 14 Inch
- Overall Length (IN): 17 Inch
- Color/ Finish: Silver Bare
- Material: Stainless Steel
- Wall Type: Single Wall
- Includes Tip: Without Tip
- Tip Length (IN): Without Tip
- Tip Diameter (IN): Without Tip
- Tip Finish: Without Tip
- Tip Material: Without Tip
Technical Documents
Shipping & Returns
- This product ships within the continental USA only.
- This product typically ships within 1 to 3 business days.
- Returns are accepted within 30 days for items in like-new condition. For complete details, please see our return policy.
Skip to content

