CYLINDER KIT YAMAHA 2006-2009 YZF450 2007-2015 WR450F 480CC WORKS CYLINDER 21003-K01

The Cylinder Works +3 mm big bore complete cylinder kit (21003-K01) is a direct bolt-on cylinder and piston package designed to increase engine displacement to 478 cc during a full top-end rebuild. It is supplied as a complete kit with the required gaskets and internal components for cylinder replacement and installation.

Features

• Big bore cylinder and piston kit designed to increase engine displacement
• Direct bolt-on replacement design requiring no replating or additional machining
• Plated cylinder designed for durability and wear resistance
• Cylinder supplied honed to specification to support straightforward piston installation
• Complete kit supplied with piston, rings, pin, cir-clips and full gasket set for top-end rebuild work

Specifications

• Manufacturer: The Cylinder Works
• Part number: 21003-K01
• Bore increase: +3 mm
• Engine displacement: 478 cc
• Cylinder plating: Nickel Silicon Carbide

Included Items:

• Cylinder
• Piston
• Wrist pin
• (2) Cir-clips
• Top ring
• (2) Oil rings
• Spacer ring
• Cylinder head gasket
• Cylinder gasket
• Exhaust gasket
• Case gasket

Cross-Reference OEM Part Numbers

• 2S2-11311-00-00
• 2S2-11311-10-00
• 422-21003K
• 0931-0174
• 733826
• 2792
• HR21003K01
• 77003-25
• K8562D300-1ZA
• WT400485100021

Vehicle Fitments

• Yamaha YZ450F (2006)
• Yamaha YZ450FSP 50th Anniversary Edition (2006)
• Yamaha YZ450F (2007)
• Yamaha YZ450F (2008)
• Yamaha YZ450F (2009)
• Yamaha WR450F (2007)
• Yamaha WR450F (2008)
• Yamaha WR450F (2009)
• Yamaha WR450F (2010)
• Yamaha WR450F (2011)
• Yamaha WR450F (2012)
• Yamaha WR450F (2013)
• Yamaha WR450F (2014)
• Yamaha WR450F (2015)