12M7-CYLINDER-WO-21003-K01 Big Bore Cylinder Kit (478cc) - 3.00mm Oversize to 98.00mm, 12.5:1 Compression

Big Bore Cylinder Kit (478cc) - 3.00mm Oversize to 98.00mm, 12.5:1 Compression

21003-K01

by Cylinder Works

$585.95
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Description

Ready-to-install, direct bolt-on cylinders require no re-plating and look virtually identical to the OEM cylinders

Three kit options to choose from: Standard Bore, Standard Bore Hi-Compression and Big Bore

Cylinder kits include matched Vertex pistons to ensure longevity, performance and reduced engine noise

Nickel Silicon Carbide plated for long life

Kits come complete with gaskets, cylinder, piston, rings, pin and clips

Big bore cylinders do not require machine work (unless noted)

Ready-to-install, direct bolt-on cylinders require no re-plating and look virtually identical to the OEM cylinders.Three kit options to choose from: Standard Bore, Standard Bore Hi-Compression and Big Bore.Cylinder kits include matched Vertex pistons to ensure longevity, performance and reduced engine noise.Nickel Silicon Carbide plated for long life.Kits come complete with gaskets, cylinder, piston, rings, pin and clips.Big bore cylinders do not require machine work (unless noted)

CYLINDER BIG BORE KIT

Details

  • Brand: Cylinder Works
  • Manufacturer Item Number: 21003-K01
  • Distributor Part Number: 09310174, 42221003K
  • Weight: 4.00
  • Height: 6.50
  • Length: 10.00
  • Volume: 0.33
  • Width: 9.00

Fitment

This Big Bore Cylinder Kit (478cc) - 3.00mm Oversize to 98.00mm, 12.5:1 Compression fits the following models:

Yamaha, Offroad, WR450F, 2007

Yamaha, Offroad, WR450F, 2008

Yamaha, Offroad, WR450F, 2009

Yamaha, Offroad, WR450F, 2011

Yamaha, Offroad, WR450F, 2012

Yamaha, Offroad, WR450F, 2013

Yamaha, Offroad, WR450F, 2014

Yamaha, Offroad, YZ450F, 2006

Yamaha, Offroad, YZ450F, 2007

Yamaha, Offroad, YZ450F, 2008

Yamaha, Offroad, YZ450F, 2009