The Cylinder Works Standard Bore Cylinder Kit is designed for 2002–2011 Yamaha YZ85 models. Manufacturer part number CW20015K01 and vendor part number 422-20015K identify this complete top-end replacement kit, which includes a standard-bore cylinder, matched Vertex piston kit, and required gaskets for a reliable engine rebuild. The cylinder maintains a stock-like appearance while providing a durable replacement solution for worn or damaged original components.
Feature: Nickel silicon carbide plating helps promote extended cylinder life, consistent performance, and resistance to wear. The included Vertex piston is matched to the cylinder for dependable fitment, reduced engine noise, and long-term durability. This kit is designed for standard-bore applications and requires no machine work in typical installations, helping simplify the top-end rebuild process. Always verify engine condition, assembly procedures, and clearances before installation.
Fitment: Fits 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, and 2011 Yamaha YZ85 motorcycles. The kit includes the cylinder, piston kit, and gaskets. The top-end gasket kit does not include valve stem seals. Cylinder Works also offers replacement pistons, gaskets, and ring sets for continued serviceability. This standard-bore kit is intended as a replacement cylinder assembly and is not a big-bore conversion.
Features:
- Complete standard-bore cylinder kit for Yamaha YZ85 models
- Includes cylinder, matched Vertex piston kit, and gaskets
- Nickel silicon carbide plated cylinder promotes extended service life
- Stock-style cylinder appearance
- Designed for dependable performance and reduced engine noise
- No machine work typically required for installation
- Top-end gasket kit does not include valve stem seals
- Replacement pistons, gaskets, and ring sets are available
- Fits 2002–2011 Yamaha YZ85 models
Fitment:
2002 Yamaha YZ85
2003 Yamaha YZ85
2004 Yamaha YZ85
2005 Yamaha YZ85
2006 Yamaha YZ85
2007 Yamaha YZ85
2008 Yamaha YZ85
2009 Yamaha YZ85
2010 Yamaha YZ85
2011 Yamaha YZ85
2012 Yamaha YZ85
2013 Yamaha YZ85
2014 Yamaha YZ85
2015 Yamaha YZ85
2016 Yamaha YZ85
2017 Yamaha YZ85
2018 Yamaha YZ85