YFZ450R YFZ 450R 98mm 98 478cc CP Cometic 13.5:1 Big Bore Top End Cylinder Kit Mud Pro 1000 Regardless of what you may

Regardless of what you may have heard

Cometic Big Bore Top End Gasket Kit (Fits 87mm 88mm 89mm)

71016-4 complete rebuild kit

Noss Machines

YFZ450R YFZ 450R 98mm 98 478cc CP Cometic 13.5:1 Big Bore Top End Cylinder Kit Mud Pro 1000 Regardless of what you mayBoost your Yamaha YFZ450R YFZ450X to 478cc with BPRATVs 98mm big bore top end kit. Includes CP forged piston, Nikasil cylinder, and Cometic MLS gaskets. Reliable power, OEM plus fit. Works with pump or race gas.,21003 1, M1009, C3178, C3178 EST, 20003, M1006, C7908, 71014 5, 2S2 11181 00 00, 3VD 14613 01 00, 94591 57120 00, 2S2 11311 30 00, 4FM 12213 00, 5TG 11631 12 00, 5TG 11633 10 00, 5TG 11631 21 00, M1002, 93450 22027 00, 2S2 11351 00 00 Yamaha