20+ Yamaha YZ450F YZ 450F 99mm 12.8:1 470cc Big Bore Cylinder Piston Top End Kit

CW21014K01, 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 Cylinder Kit

FITS YAMAHA MODELS

WR 450 F (21-24); YZ 450 F (20-24); YZ 450 FX (21-24)

SPECS

• Compression Ratio 12.8:1
• Cylinder Diameter: 99 mm
• Cylinder Kit Type: Big Bore
• Displacement: 470 cc
• Engine Type: 4-Cycle
• Includes: Cylinder, Piston Kit, and Vertex Top-End Gasket Kit with Viton valve stem seals
• Size Over Standard: +2.00mm
• Drop in, Bolt on kit with no modifications required

1 year manufacture warranty for your peace of mind*