- Bronco® offers OEM replacement valves for both ATV and UTV models
- OEM replacement valves are made of durable SUH35B heat resistant steel that also comes with fill Nitride finish for further durability and resistance to corrosion
- Performance valves receive a swirl polish, smooth stem treatment, and are made of 21-4N/SUH35HT stainless steel. Performance valves are generally reserved for high performance / reving machines so these valves are forged with Stellite-Tipped valve stems.
- All valves are manufactured under ISO 9001 certified factory
| Compatible Vehicles | |||
| Years | Make | Make | Notes |
| 2004-2009 | Yamaha | YFZ450 | |
| 2009-2020 | Yamaha | YFZ450R | |
| 2016 | Yamaha | YFZ450R Special Edition | |
| 2017-2020 | Yamaha | YFZ450RSE | |
| 2009-2015 | Yamaha | YFZ450RSE Special Edition | |
| 2007 | Yamaha | YFZ450SE Special Edition | |
| 2008 | Yamaha | YFZ450SP Special Edition | |
| 2006-2007 | Yamaha | YFZ450V Bill Balance Edition | |
| 2010-2011 | Yamaha | YFZ450X | |
| 2010 | Yamaha | YFZ450X Bill Balance Edition | |
| 2011 | Yamaha | YFZ450XSE Special Edition | |
| 2003-2009 | Yamaha | YZ450F | |