Cylinder Works big bore cylinder kit for Yamaha 450 models, designed as a replacement top-end assembly for 4-cycle engines with increased displacement to 470 cc. This kit includes the cylinder, piston kit, and top-end gasket kit, and is specified with a 99 mm cylinder diameter, 12.8:1 compression ratio, and compatibility with Vertex piston reference 24369.

Features

• Big bore cylinder kit
• Replacement top-end assembly
• Includes cylinder, piston kit, and top-end gasket kit
• Uses Vertex #24369

Specifications

• Cylinder diameter: 99 mm
• Compression ratio: 12.8:1
• Displacement: 470 cc
• Engine type: 4-cycle
• Cylinder kit type: big bore

Vehicle Fitments

• Yamaha WR 450 F (2019-2020)
• Yamaha YZ 450 F (2018-2019)
• Yamaha YZ 450 FX (2019-2020)