Ceramic 68mm Big Bore Kit w/ 13.5:1 Forged Piston - Used on 34/29 Head w/ +6 Crank - All KLX140

68mm Forged Piston and Ceramic Cylinder Kit 13.5:1 Forged Piston for the 34/29 heads and +6 Stroker Crank Includes: Ceramic Coated Cylinder 68mm Forged Piston Kit w/ 13.5:1 CR Valve Reliefs cut specific for the BRT 34/29 Head Wrist Pin Height specific for use on the +6mm BRT Stroker Crank Wrist Pin, Rings, and Clips Head and Base Gaskets Ceramic cylinders dissipate heat more efficiently to keep engine temps down. A must have for these KLX140s Notes: Re-jetting of the carb is needed after installing this kit. We strongly suggest an aftermarket exhaust with any bore kit. We recommend using a high octane race fuel with anything above 13:1 CR.