Borla 140738 BOR Cat Back (no des) engine-crankcase-components-crank-bearings-seals 2012-2013 Yamaha WR250R

2012-2013 Yamaha WR250R

2022-2023 Beta 200 RR Race Edition

NOTE: 99-04 Twin Cams will require the additional purchase of valve spring kit PART #0926-2722

The GM-11 is just as comfortable on your favorite fire road as it on the interstate

Stroke: 59

Borla 140738 BOR Cat Back (no des) engine-crankcase-components-crank-bearings-seals 2012-2013 Yamaha WR250RThe Borla(r) Cat Back(tm) system for the Civic Type R is unique in the industry with an adjustable sound level. By Changing the block off plates behind the center tip you can adjust the SPL (Sound Pressure Level) to your taste. System also features Borla(r)'s Polyphonic Harmonizer Technology which utilizes patented units that contain pipes of different diameters and lengths to create multiple exhaust notes that harmonize to deliver a clean, rich, full