Cylinder Works 20002-K03 Standard Bore 13.5:1 High-Compression Cylinder Kit for Yamaha YZ250F

The Cylinder Works 20002-K03 cylinder kit is a complete standard-bore, high-compression top-end solution for select Yamaha YZ250F models. Designed for a 77.00 mm bore and 13.5:1 compression ratio, this kit includes the cylinder, matched piston kit, and required gaskets for a dependable engine refresh and performance upgrade.

Engineered to maintain an original-equipment appearance, the Cylinder Works cylinder looks like the stock component while featuring a nickel silicon carbide plated bore for extended service life, consistent performance, and improved wear resistance. The matched Vertex piston helps support durability, efficient operation, and reduced engine noise. No machine work is needed for installation when used with the applicable standard-bore configuration.

Feature: Complete standard-bore high-compression cylinder kit
Feature: 77.00 mm bore with a 13.5:1 compression ratio
Feature: Includes cylinder, Vertex piston kit, and gaskets
Feature: Nickel silicon carbide plating for longer cylinder life
Feature: Stock-style appearance for an original-equipment look
Feature: No machine work needed for the applicable installation
Feature: Replacement pistons, gaskets, and ring sets are available separately

This Cylinder Works 20002-K03 kit fits 2008, 2009, 2010, 2011, 2012, and 2013 Yamaha YZ250F motorcycles. The top-end gasket kit does not include valve stem seals. Verify engine configuration and standard-bore requirements before installation.

Features:

• Complete standard-bore high-compression cylinder kit
• 77.00 mm bore with a 13.5:1 compression ratio
• Includes cylinder, Vertex piston kit, and gaskets
• Nickel silicon carbide plated cylinder bore for extended service life
• Stock-style cylinder appearance
• No machine work needed for the applicable installation
• Matched Vertex piston helps support durability, performance, and reduced engine noise
• Replacement piston, gasket, and ring sets are available
• Fits 2008-2013 Yamaha YZ250F models
• Manufacturer part number: 20002-K03
• Vendor part number: 422-20002K3