Cylinder Works Big Bore Top-End Gasket Kit for Yamaha WR450F / YFZ450 / YFZ450R & More - 21003-G01

The Cylinder Works Big Bore Top-End Gasket Kit, part number 21003-G01, is an application-specific top-end gasket package intended for servicing a compatible Cylinder Works big-bore engine setup. It is intended for Yamaha WR450F, YFZ450, and YFZ450R; see the complete vehicle list below.

Features

• Designed for the compatible big-bore top-end configuration
• Provides the sealing components needed when removing and reinstalling the cylinder and head
• Application-specific gasket selection helps support a properly assembled top end

What Is Included

• Head gasket
• Base gasket
• Exhaust gasket
• Required O-rings for the listed application

Specifications

• Brand: Cylinder Works
• Product Type: Big Bore Top-End Gasket Kit
• Bore Configuration: Big bore
• Product Type: Top-end gasket kit
• Manufacturer Part Number: 21003-G01

Vehicle Fitment

Make: Yamaha

• WR 450 F (2007-2015)
• YFZ 450 (2017)
• YFZ 450 R (2009-2022)
• YFZ 450 R SE (2009-2022)
• YFZ 450 X (2010-2011)
• YFZ 450 X Bill Balance Edition (2010)
• YZ 450 F (2006-2009)

Fitment and Installation Note: Confirm the complete year, make, model, engine configuration, and manufacturer part number before ordering. Engine assembly should follow the vehicle manufacturer’s specifications, clearances, torque values, and break-in procedures.