Cylinder Works 20001 K02 Standard Bore Review

Spec: Description: Standard Bore Cylinder Kit, Compression Ratio: 12.5:1, Cylinder Diameter: 95mm, Cylinder Kit Type: Standard Bore, Displacement: 449cc, Engine Type: 4-Cycle, Kit Includes: Cylinder, Piston Kit, & Top-End Gasket Kit, Notes: Uses Vertex #22915. Replaces OEM Numbers: Lemans: 0931-0280, Tucker Rocky: 733821, Southern: HR20001K02, Advantage Performance: 77003-12, Automatic Distributor's: 880077. Fits: Yamaha WR 450 F 2003-2006, YZ 450 F 2003-2005. 1-year warranty protects you after your purchase. We're confident that our products will work flawlessly once installed in your vehicle. But in a rare case that it does not, we'll replace it anytime within one year of your order. If you have a problem, we will take every step to assist you, contact us for a replacement. 100% New aftermarket Standard Bore Cylinder Kit built to meet OEM specifications for Yamaha.