Cylinder Works 2017 YFZ 450/09-23 YFZ 450 R Standard Bore Cylinder Kit

This Cylinder Works standard bore cylinder kit is designed to get your 2009-2019 Yamaha YFZ450R or 2010-2011 YFZ450X back to peak performance. If you're looking to rebuild your engine and restore lost horsepower, this kit is a solid option that often comes in at a more competitive price point than buying individual OEM parts.

Inside this kit, you'll find a cast aluminum cylinder from Cylinder Works, a Vertex piston, and all the necessary gaskets to complete the job. The cylinder itself features a nickel silicon carbide (NSC) electroplate bore. This advanced plating process allows for very tight manufacturing tolerances, which translates to reduced friction during operation and impressive durability. To ensure optimal performance right out of the box, the bore is precision diamond honed to exact dimensions, creating the perfect surface finish for proper piston ring seal and effective oil retention.

When you're rebuilding the top end of your YFZ450R or YFZ450X, using a well-built cylinder kit like this one from Cylinder Works can make a significant difference in the final outcome. It's a complete package designed to help you achieve reliable power restoration.