- Intake valve replace OEM: 1SM-12111-10-00
- Exhaust valve replace OEM: 1SM-12121-10-00
- Intake valve: High-quality 4Cr10SI3Mo, nitrogen treatment.
- Exhaust valve: High-quality 5Cr21Mn9Ni4N, nitrogen treatment.
- High strength one-piece design.
- 1:1 interchangeable with the original spare part.
- Stronger and lighter to withstand all the slamming and the combustion chamber’s heat.
- Trust in quality with many years of product experience.
Fit for
Yamaha YZ250F 2014-2018
Yamaha YZ250FX 2015-2019
Yamaha WR250F 2015-2019