Borla XR-1 Multi-Core 3in Ctr-Ctr Oval 12in x 4.25in x 7.88in Rotary Engine Equipped Racing MufflerXR 1(r) Multi Core Racing Muffler. 3" Center Inlet 3" Center Outlet 4. 25" x 7. 88" Oval x 12" Long Body 17" Overall Length. Compact size is perfect for applications with limited space and can be used on a wide range of vehicles. It features BORLA(r)'S patented Multi Core 4 tube design for maximum flow, horsepower, and torque. The Multi Core portion of XR 1(r) mufflers flows better than straight tubing. Recommend for high horsepower applications.

Notched necks for easy clamp-on installation using 1" wide band style clamps 18325 (clamps not included)

Due to the cutting and welding involved

GT 60 Curved Vane rotors provide the highest cooling capacity and longest service life for extreme braking short tracks and road course competition

Street series pistons are forged from 4032 alloy aluminum in Mentor

Vibrant Performance Braided Flex Hoses are available in Stainless Steel and Nylon braided covers which provide excellent abrasion resistance and surrounds a reinforced CPE synthetic rubber inner liner

this design does not require oil pump clearancing when used with a production-style oil pump

This 3" inlet Cat-Back® system includes both AFM ('20-'21)/ DFM ('22-'25) and NPP dual mode exhaust valves

there is very little piston to valve clearance

engine builders and hot street cars

especially if you add the Blackwing Heat Exchanger

forced induction

cost-effective tuning tools that allow users to accurately monitor the Air/Fuel Ratio (AFR) of their engine