Cylinder Works Big Bore Cylinder Kit 103cc. - Yamaha YZ85 02-17 / 21007-K01

Cylinder Works is the number one company to choose for a big bore kit for your Yamaha YZ85 (103.5 cc).

When it comes to making power, there is no replacement for displacement. When you are looking for power with the reliability, of a stock motor go big! The Cylinder Works Big Bore Kit is +5mm bore, and that makes the bore 103.5cc using standard compression. Kit Includes Cylinder, Piston Kit, & Top-End Gasket Kit. Cylinder Works uses Vertex piston in the 2-stroke big bore kits.

Cylinder Works Big Bore Cylinder Kit 103cc. - Yamaha YZ85

•  Cylinder Works Kits are Ready-to-install, direct bolt-on cylinders and look identical to the OEM cylinders
• Cylinder kits include matched Vertex pistons to ensure longevity, performance, and reduced engine noise
•  Thick Nickel Silicon Carbide plated for long life
• Kits include gaskets, cylinder, piston, rings, pin, and clips, just bolt on and ride
•  Big bore cylinders kit are bolt-on and require additional machine work *Must modify cylinder head
• Made in the U.S.A.
•  Cylinder Works part number: 21007-K01 
• Fitment - YZ85 02-17 (does not fit 2018-2021 YZ85)
  

Cylinder Works offers three kit options for your 2-stroke bikes to choose from Standard Bore, Standard Bore High Compression, and Big Bore. Click to see more cylinder works kits