BP Racing
4h-450k
YZ450F 98mm Big Bore Cylinder
Pistons
Nikasil coated aluminum cylinder
Drop in - no machining required
Fits all '03-05 models
Works with any 98mm piston
Pro Circuit Type 296 Spark Arrester Silencer 1361230
URO Parts 12 710 509 12611710509
Mix me 3760