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Cylinder Works Big Bore Piston Kit 23403B

$237.56
$263.95
Save $26.39 10%
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This product is legal in California only for racing vehicles which may never be used, registered or licensed for use upon a highway.

Cylinder Works Big Bore Piston Kit 23403B

Cylinder Works Replacement Piston Kits are purpose-built for machines running Big Bore Cylinder Kits from Cylinder Works. Piston Kits include an all new - not remanufactured - forged aluminum Vertex piston(s) as originally included in all Cylinder Works Big Bore Kits. Pistons are constructed from the highest quality 2618 aluminum alloy with full molybdenum disulphite skirts. Vertex Pistons meet or exceed OEM quality to restore compression, cylinder health and performance. 

Specifications: 

  • Includes Vertex forged aluminum piston Part # 23403B
  • Compression Ratio 12.0:1
  • Cylinder Diameter 98 mm
  • Displacement 480 cc
  • Piston Diameter 97.960 mm
  • Size Over Standard: 3.00mm

Features: 

  • Replacement piston(s) designed for Cylinder Works Big Bore Kits
  • Piston size and compression matches specs of Cylinder Works Kit
  • Forged 2618 aluminum pistons for superior strength and durability
  • Includes case-hardened wrist pin and piston rings (with nitride or chrome plating)
  • Piston supplied and manufactured by Vertex (Italy)
  • Piston skirts treated to molybdenum disulphite coating for increased piston life, quicker break-in and reduced running noise
  • New, not remanufactured, hardware
  • Piston profile optimized by Vertex to match compression ratio, cylinder design and ring spec for each unique Cylinder Works Cylinder Kit application

Note: Refer to Cylinder Works Big Bore Kit to confirm replacement Vertex Piston part number. Image for reference only. Kit contents vary with application. 

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This product is vehicle specific. Click here to select your vehicle to ensure fitment.

This Product Fits:


Yamaha
YFZ450 2004-2017
YFZ450 LE 2004
YFZ450R 2009-2020
YFZ450R SE 2009-2020
YFZ450 SE 2005, 2006, 2007, 2008
YFZ450X 2008, 2011
YFZ450X Bill Balance Edition 2010
YFZ450X SE 2011
Product Style Item # Store SKU Manufacturer Product # Availability
Product Style Cylinder Works Big Bore Piston Kit 23403B Item # 10166252 Store SKU Manufacturer Product # 23403B Availability In Stock: Ships within 24 hours
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