High quality 170cc bore kit that shows substantial power gains throughout the RPM range. 63mm piston. 10.5:1 compression ratio allows use of premium pump gas. Complete kit includes: Cylinder, Piston, Ring set, Pin, Clips and Gaskets. Includes custom BBR manifold adapter, 26mm Mikuni VM26 carb, UNI Air Filter, throttle and cable. BBR's Rev box, BBR D3 Exhaust, BBR Performance Camshaft. Brand new high quality BBR aluminum cylinder 10.5:1 compression ratio 63mm piston Includes cylinder, piston, pin, rings, and gaskets 26mm Mikuni VM26 carburetor UNI Air Filter Air Box Vents Pre-jetted for most big-bore applications CNC machined manifold adapter Includes throttle and cable BBR D3 Exhaust BBR Performance Camshaft "We've been testing this kit for the last 3 months on our BBR KLX140 Concept Bike. This is flat out the single best mod you can do to your KLX140 motor." - Duane Brown
