Cylinder Works Complete Big Bore Cylinder & Piston Kit +3.0mm (21010-K01)
- Ready-to-install, direct bolt-on cylinders require no re-plating and look virtually identical to the OEM cylinders
- Cylinder kits include matched Vertex pistons to ensure longevity, performance and reduced engine noise
- 13.5:1 compression
- 80mm cylinder diameter
- +3.00mm bore oversize
- 270cc displacement
- 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
- Made in the U.S.A.
| Compatible Vehicles | |||
| Years | Make | Make | Notes |
| 2015-2019 | Yamaha | WR250F | |
| 2014-2018 | Yamaha | YZ250F | |
| 2015-2019 | Yamaha | YZ250FX | |