Pro-X Steel Intake Valve & Spring Kit 04-07 CRF250R/04-17 CRF250X (28.SIS1336-2)
- Replaces the OEM valves and valve springs
- Steel, nitrided valves for increased durability and less wear under extreme conditions
- Stronger valve springs deal with the extra weight of the steel valves
- Springs are made from premium chrome vanadium steel for higher performance and durability at high rpm
- Kit contains a set of steel intake valves plus a set of specially designed valve springs; can be installed using the OEM retainers, bases and valve seals
| Compatible Vehicles | |||
| Years | Make | Make | Notes |
| 2004-2007 | Honda | CRF250R | |
| 2004-2017 | Honda | CRF250X | |