Power Valve Kit CYLINDER WORKS standard cylinder - Yamaha YZ250 (Manufacturer part number: CW-PV-K01): replacement part designed for motocross riders looking to maintain or restore the power valve system of their YZ250.

Designed by CYLINDER WORKS for the standard cylinders of YAMAHA YZ250 models, this Power Valve kit allows for the replacement of worn original components and restores the variable intake behavior intended by the manufacturer. Ideal for regular maintenance and servicing after several seasons on the track, it is aimed at demanding riders seeking reliability and consistent performance.

• Application: parts suitable for Cross applications.
• Compatibility: YAMAHA YZ 250 (CG23) 2021, YZ 250 (CG20) 2005, YZ 250 (CG17) 2004.
• Practical advantage: direct replacement on standard cylinder to restore power valve operation and facilitate engine maintenance.

Before installation, check the condition of other components in the upper engine (piston, rings, gaskets) and follow Yamaha's maintenance recommendations. For motocross riders, keeping a power valve system in good condition contributes to consistent engine response across the circuit's operating range.