Description
Features
- Competition valve job
- Includes cam caps and cam cap bolts
- Does not include valves, springs, or lifters
- Unshrouded combustion chamber
- Includes C630 (nickel/aluminum/bronze) valve seats and guides
- New replacement cylinder head
- Blended bowl
- Stock shaped ports
- Shortened valve guides to accept higher lift cams
| 2024 | Yamaha | YZ250 |
| 2023 | Yamaha | YZ250 |
| 2022 | Yamaha | YZ250 |
| 2021 | Yamaha | YZ250 |
| 2020 | Yamaha | YZ250 |
| 2019 | Yamaha | YZ250 |
| 2018 | Yamaha | YZ250 |
| 2017 | Yamaha | YZ250 |
| 2016 | Yamaha | YZ250 |
| 2015 | Yamaha | YZ250 |
| 2014 | Yamaha | YZ250 |
| 2013 | Yamaha | YZ250 |
| 2012 | Yamaha | YZ250 |
| 2011 | Yamaha | YZ250 |
| 2010 | Yamaha | YZ250 |
| 2009 | Yamaha | YZ250 |
| 2008 | Yamaha | YZ250 |
| 2007 | Yamaha | YZ250 |
| 2006 | Yamaha | YZ250 |
| 2005 | Yamaha | YZ250 |
| 2004 | Yamaha | YZ250 |
| 2003 | Yamaha | YZ250 |
| 2002 | Yamaha | YZ250 |
| 2001 | Yamaha | YZ250 |
| 2000 | Yamaha | YZ250 |
| 1999 | Yamaha | YZ250 |
