20+ Yamaha YZ450F YZ 450F 99mm 12.8:1 470cc Big Bore Cylinder Piston Top End Kit K&N Can be used with stock

Can be used with stock or aftermarket exhaust

Yamaha Raptor 700 (All Years)

1999 Honda TRX450 Foreman

Machined spacer

20+ Yamaha YZ450F YZ 450F 99mm 12.8:1 470cc Big Bore Cylinder Piston Top End Kit K&N Can be used with stockCW21014K01, 24461A, 24461B, CW21014K01, 24461B, 24461, B2W 11311 00 00, B2W 116A0 00 00, B2W 11311 00 00, B2W 116A0 00 00, B2W 11181 00 00, B2W 11351 00 00, B2W 11631 00 00, B2W 11603 00 00, BR9 11633 10 00, BR9 11633 00 00, 93450 19052 00, 51Y 12119 00 00, A YZ450F 2022 97 CG MX1111,204859111922, 204859111024, C3786, B2W W0001 00 00, P400485600213, 35. 2450, 40255M09700, 40254M09700, 191070548896 Cylinder Works Top End 99mm +2mm 470cc Big Bore