• High-Quality T-304 Austenitic Stainless Steel Will Never Rust: 100 Percent Welded Construction For Strength
• High-Temperature Continuous-Filament Fiber (CFF) Acoustic Material For Sound Control

The world's first mufflers designed from scratch to optimize the sound and power of crate and custom-built motors. Available in our signature Touring, S-Type and ATAK(R) sound technologies, Borla(R) CrateMufflers ™ give you premium looks, sound and performance from the throaty growl of BORLA(R)'s Touring technology to the all-out roar of our patented ATAK(R) design. Give your ride the sound it deserves.

• Offering Aircraft Quality High Quality T-304 Stainless Steel, All Welded Construction And More For Increased Horsepower And Torque
• All BORLA® Mufflers Are Manufactured Using Ultra Durable, Continuous Strand Sound Absorbing Composite Filament

Featuring a patented uninterrupted-flow design, BORLA's XR-1® mufflers actually outflow a straight piece of pipe. XR-1® race products are made in the USA and constructed of high-quality T-304 stainless steel for track tough durability. They meet the strictest noise requirements using high temperature continuous filament fiber (CFF) for sound control.

High-temperature continuous-filament fiber (CFF) acoustic material for sound control. Natural mill finish can be brushed or polished prior to installation. Hands down, BORLA®'s XR-1® raceline parts offer a good balance of sound and power.

Featuring a patented uninterrupted-flow design, BORLA's XR-1® mufflers actually outflow a straight piece of pipe. XR-1® race products are made in the USA and constructed of high-quality T-304 stainless steel for track tough durability. They meet the strictest noise requirements using high temperature continuous filament fiber (CFF) for sound control.

• High-Quality T-304 Austenitic Stainless Steel Will Never Rust: 100 Percent Welded Construction For Strength
• High-Temperature Continuous-Filament Fiber (CFF) Acoustic Material For Sound Control

• High-Quality T-304 Austenitic Stainless Steel Will Never Rust: 100 Percent Welded Construction For Strength
• High-Temperature Continuous-Filament Fiber (CFF) Acoustic Material For Sound Control

Borla(R) CrateMuffler™s are the world’s first mufflers specifically designed to optimize the sound and power of crate and custom-built motors. The CrateMuffler™s are available in BORLA(R)'s 3 Signature Sound Technologies: Touring, S-Type, and ATAK(R). Give your ride the sound it deserves.

• High-Quality T-304 Austenitic Stainless Steel Will Never Rust: 100 Percent Welded Construction For Strength
• High-Temperature Continuous-Filament Fiber (CFF) Acoustic Material For Sound Control

• The Internal Merge "X" Pipe Design In This Muffler Blends Exhaust Gases, Pulses And Sound Waves Increasing Efficiency And Sound Attenuation

• High-Quality T-304 Austenitic Stainless Steel Will Never Rust: 100 Percent Welded Construction For Strength
• High-Temperature Continuous-Filament Fiber (CFF) Acoustic Material For Sound Control

• High-Quality T-304 Austenitic Stainless Steel Will Never Rust: 100 Percent Welded Construction For Strength
• High-Temperature Continuous-Filament Fiber (CFF) Acoustic Material For Sound Control

Borla(R) CrateMuffler™s are the world’s first mufflers specifically designed to optimize the sound and power of crate and custom-built motors. The CrateMuffler™s are available in BORLA(R)'s 3 Signature Sound Technologies: Touring, S-Type, and ATAK(R). Give your ride the sound it deserves.

• High-Quality T-304 Austenitic Stainless Steel Will Never Rust: 100 Percent Welded Construction For Strength
• High-Temperature Continuous-Filament Fiber (CFF) Acoustic Material For Sound Control

Value-priced BORLA(R) ProXS™ mufflers share many of the hottest features of our performance line. Made of High-quality T-304 stainless steel construction, street commanding sound. Sizes are available for import and domestic cars and trucks.

• High-Quality T-304 Austenitic Stainless Steel Will Never Rust: 100 Percent Welded Construction For Strength
• High-Temperature Continuous-Filament Fiber (CFF) Acoustic Material For Sound Control

• High-Quality T-304 Austenitic Stainless Steel Will Never Rust: 100 Percent Welded Construction For Strength
• High-Temperature Continuous-Filament Fiber (CFF) Acoustic Material For Sound Control

• High-Quality T-304 Austenitic Stainless Steel Will Never Rust: 100 Percent Welded Construction For Strength
• High-Temperature Continuous-Filament Fiber (CFF) Acoustic Material For Sound Control

2-1/2 inch inlet - 4 inch single round rolled-edge angle-cut lined resonated outlet - 12 inch long tip embossed with borla® logo. Weld-on mounting method.

Accuseal® clamp design provides 360 Degree of clamping force in a clean, easy to install, one bolt package. These stainless steel clamps are the best way to complete your custom installation or repair.

2-1/2 inch inlet - 4 inch single round rolled-edge angle-cut lined outlet - 6-1/4 inch long tip embossed with borla® logo. Clamp on mounting method.

2-3/4 inch inlet - 4 inch single round rolled-edge angle-cut outlet - 14 inch long tip with black chrome finish. Embossed with borla® logo. Weld-on mounting method.

2-1/2 inch inlet - 3-1/2 inch x 3.28 inch single square rolled-edge angle-cut outlet - 10-1/2 inch long tip with black chrome finish embossed with borla® logo. Clamp on mounting method.