The Cylinder Works 20010 Standard Bore Cylinder is designed as a direct replacement for the original-equipment cylinder on select Yamaha four-stroke motorcycles. Its stock-style appearance supports a clean, factory-like installation while providing a dependable foundation for engine rebuilding and maintenance. This cylinder is supplied as a cylinder-only component and is intended for applications using the standard bore specification.
Manufactured by Cylinder Works, the 20010 cylinder features a nickel silicon carbide plated bore for improved durability, wear resistance, and extended service life. The plated surface is designed to help maintain consistent performance under demanding riding conditions while supporting reliable piston and ring operation. Its replacement design makes it a practical choice for restoring engine performance without changing the standard bore configuration.
Fitment includes the 2014–2017 Yamaha YZ250F, 2015–2017 Yamaha YZ250FX, and 2015–2017 Yamaha WR250F. Verify the motorcycle year, model, and required standard-bore specification before installation. Manufacturer part number: 20010. Vendor part number: 20010.
Features:
- Stock-style cylinder appearance for an original-equipment look
- Nickel silicon carbide plated bore for enhanced durability and longer service life
- Standard bore replacement design
- Cylinder-only component for engine rebuilding and maintenance
- Fits 2014–2017 Yamaha YZ250F, 2015–2017 Yamaha YZ250FX, and 2015–2017 Yamaha WR250F
Fitment:
2014 Yamaha YZ250F
2015 Yamaha WR250F
2015 Yamaha YZ250F
2015 Yamaha YZ250FX
2016 Yamaha WR250F
2016 Yamaha YZ250F
2016 Yamaha YZ250FX
2017 Yamaha WR250F
2017 Yamaha YZ250F
2017 Yamaha YZ250FX
2018 Yamaha WR250F
2018 Yamaha YZ250F
2018 Yamaha YZ250FX
2019 Yamaha WR250F
2019 Yamaha YZ250FX