XR-1 Multi-Core

XR-1(r) Multi-Core Slim Line Racing Muffler. The Center Inlet / Center Outlet necks are 3.5" tubing formed into a 4.13" x 2.61" Oval. The body is a 3" High x 7.88" Wide Oval, 12" Long with a 17" Overall Length. Designed for high horsepower applications in low profile vehicles with limited space including vehicles with rotary engines. It features BORLA(r)'S patented Multi-Core 2 tube design for maximum flow, horsepower, and torque. The Multi-Core portion of XR-1(r) mufflers flows better than straight tubing. Reversible design for installation flexibility. T-304 stainless steel for superior corrosion resistance. Natural mill finish can be brushed or polished prior to installation. 100% welded construction for strength. High temperature T-304 stainless steel wool for sound control. There is no BORLA(r) logo embossment on this part. Best of all, it's made in the USA. Just what you’d expect from the world’s most experienced (and most winning) exhaust brand.

Additional Information

XR-1 Multi-Core Slim Line Racing Muffler - 3.5" Oval Pipe Center Inlet/ 3.5" Oval Pipe Center Outlet 3" x 7.88 Oval x 12" Long Body 17" Overall Length. Universal Part. Reversible Design.

Part Type

Exhaust Muffler

Product Overview

Slim Line Racing Muffler. Designed for low profile vehicles with limited space. It features a 3" x 7.88" oval body. Necks are 3.5" tubing formed into 4.13" x 2.61" oval. Reversible design for installation flexibility. Patented Multicore design for maximum power. Recommend for high horsepower applications. T-304 Stainless steel will never rust. 100% welded construction for strength. High temperature T-304 stainless steel wool for sound control. Free Flow design for improved performance. There is no logo embossment on this part. Best of all, it's made in the USA. Just what you'd expect from the world's most experienced (and most winning) exhaust brand.

• 4.13" x 2.61" Oval Center Inlet / Outlet Necks. 12" Long x 3" High x 7.88" Wide Oval Body 17" OAL
• Can be used on a wide range of vehicles including vehicles with rotary engines
• Multi-Core 2 tube internal design. High temperature T-304 stainless steel wool for sound control.
• Slim Line mufflers are perfect for low profile applications with limited space
• Universal Muffler. Reversible Design. No BORLA(r) logo embossement.

Images are supplied by the manufacturer and may be generic. While all efforts are made to provide accurate pictures, there may be differences in the actual product, such as colour, quantity, version, or included components. Please carefully review the description and specifications for details on inclusions or any variations. Some items may be sold individually or in sets, and images may occasionally depict additional products or quantities not included in your purchase. For assistance or clarification, please contact customer support.

Product Details

Reference Information

Muffler, XR-1, 4.13 in. x 2.61 in. Inlet/Outlet, Stainless Steel, Natural, Each

Whether you're drag racing or Circle Track racing, Borla has an XR-1 racing muffler for you. In fact, the 16 in. Shootout mufflers are rated the highest-flowing mufflers on the market.

Features include:
• Straight-through design for maximum flow
• Aircraft-quality T-304 stainless steel construction for reduced weight that will never rust
• All-welded, one-piece design for increased structural integrity
• Stainless steel, sound-absorbing material to protect against burnout