Cylinder Works 17-18 Honda CRF 450 R 450cc Standard Bore High Compression Cylinder Kit 14.4:1 Comp.

The nickel silicon carbide (NSC) electroplate bore on this Cylinder Works cylinder kit is a key detail. This advanced plating allows for very tight tolerances, which means less friction as the piston moves. It also contributes to extreme durability, so you can expect this kit to hold up well under demanding use. This standard bore kit is designed to bring your 17-18 Honda CRF 450 R back to its original horsepower and performance levels, or even better, with its high compression ratio.

Inside this kit, you'll find a cast aluminum cylinder from Cylinder Works, a Vertex piston, and all the necessary gaskets to get the job done. The cylinder bore itself is precision diamond honed to exact dimensions. This careful honing process ensures a proper surface finish for the piston rings to seal effectively against, which is crucial for both power and oil retention. With a 14.4:1 compression ratio, this kit is built for riders looking for a noticeable boost in performance over stock.

Compared to buying individual OEM parts, this Cylinder Works kit offers a competitive price point for a complete engine restoration. It’s a solid option for anyone rebuilding the top end of their CRF 450 R and wanting to get back on the trail or track with renewed power.