Cylinder Works Complete Big Bore Cylinder & Piston Kit +3.0mm (21003-K02)
- 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
- 12:1 compression
- 98mm cylinder diameter
- +3.00 bore oversize
- 480cc 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 |
| 2009-2023 | Yamaha | YFZ450R | |
| 2016 | Yamaha | YFZ450R Special Edition | |
| 2017-2023 | Yamaha | YFZ450RSE | |
| 2009-2015 | Yamaha | YFZ450RSE Special Edition | |
| 2010-2011 | Yamaha | YFZ450X | |
| 2010 | Yamaha | YFZ450X Bill Balance Edition | |
| 2011 | Yamaha | YFZ450XSE Special Edition | |