Cylinder Works
Cylinder Works Big Bore Cyinderkit Yamaha Bike 21003-K01
  style="font-size:12px;">(+3mm Big Bore Kit) 478cc. Uses Vertex #23404 Includes (Cylinder, Piston, Rings, Pin, Clips, Gaskets)
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 Works
  style="font-size:12px;">(+3mm Big Bore Kit) 478cc. Uses Vertex #23404 Includes (Cylinder, Piston, Rings, Pin, Clips, Gaskets)
Cylinder Works
Ready-to-install, direct bolt-on cylinders require no re-plating and look virtually identical to the OEM cylindersThree kit options to choose from: Standard Bore, Standard Bore Hi-Compression and Big...
Cylinder Works
 (+3mm Big Bore Kit) makes 477cc. 12.0:1 compression. Uses Vertex #23523. When using Hot Rods 4170 makes
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