Vertex Forged Big Bore Piston Kit for 2004-2009, 2012-2013 Yamaha YFZ 450 & More - 23403B

The Vertex Forged Big Bore Piston Kit 23403B is designed for the Yamaha models listed below. It provides an application-specific solution for big-bore top-end service while keeping the required vehicle fitment connected to one manufacturer part number.

This forged big-bore piston kit is intended for the compatible enlarged-cylinder configuration, increasing engine displacement compared with the standard bore. It includes the matched piston installation components.

Features

• Forged piston construction
• Big-bore design for increased displacement
• Includes piston, rings, wrist pin, and circlips
• Requires the correct compatible cylinder bore and engine setup

Specifications

• Brand: Vertex
• Product Type: Forged Big Bore Piston Kit
• Manufacturer Part Number: 23403B

Vehicle Fitment

Compatible Make(s): Yamaha

• YFZ 450 (2004-2009, 2012-2013)
• YFZ 450 LE (2004)
• YFZ 450 R (2009-2023)
• YFZ 450 R SE (2009-2023)
• YFZ 450 SE (2005-2008)
• YFZ 450 V Bill Balance Edition (2006-2007)
• YFZ 450 X (2010-2011)
• YFZ 450 X Bill Balance Edition (2010)

Fitment Note: Confirm the exact year, model, engine, trim, and required component configuration before ordering. Professional installation and measurement of all engine clearances are recommended where applicable.