CYLINDER WORKS - STANDARD BORE CYLINDER KIT - 450CC/97MM/13.0:1 - YAMAHA 20-22 YZ450F / 21-23 YZ450FX / 21-23 WR450FCylinder Works complete cylinder kits include everything you need for doing a cylinder rebuild on your bike. Kit includes everything listed below. Uses Vertex #24448 piston Compression Ratio13. 0: 1 Cylinder Diameter 97. 000 mm Cylinder Kit Type Standard Bore Displacement 450 cc Engine Type 4 Cycle Includes: Cylinder, Piston Kit, and Top End Gasket Kit Fits the following models: Yamaha 20 22 YZ450F 21 23 YZ450FX 21 23 WR450F Mfg Part# CW20014K01

CRF 250RX '19-21

and used by incredible talents

- Laser Etched ODI graphics

But with the RAD Valve

19-23 KX450F

lifting the ceiling of what a premium motocross boot should be higher than ever before

With the straight back system we really like these as they simplify exhaust routing so there is no need to run exhaust shields or worry about burning through engine blankets

480 RR Race Edition

Performance

306071-YEL-XSeries - X Series Yellow

24449A Size A

-YZ250F 10-23