Description
Kibblewhite - 09263177 - Valve and Spring Kit - 0.420" Lift - Yamaha YZ250F '19-'25
Features
- Extends the life of the valvetrain and intake components by as much as 4x over the OEM titanium parts
- Includes forged one-piece stainless steel intake valves, wound chrome-silicon heat-treated wire valve springs, ultra-light titanium retainers and hardened steel bases
- Components are created using Finite Element Analysis (F.E.A.) software, as well as proprietary camshaft analysis and spring design software
- Specifically designed and engineered for each application
- Made in the USA
Specs
| Stem Diameter Imperial | 0.1962'' |
| Type | Conversion |
| Product Name | Valve and Spring Kit |
| Spring Open Pressure | 151 lb |
| Units | Kit |
| Head Diameter Metric | 31.00 mm |
| Spring Lift | 0,420'' |
| Head Diameter Imperial | 1.220'' |
| Material | Black Diamondâ„¢ Stainless |
| Riding Style | Off-Road |
| Spring Lift Imperial | 0.420'' |
| Application | Intake |
| Spring Seat Pressure | 55 lb |
| Tulip Angle Imperial | 18° |
| Valve Seat Height Imperial | 1.150'' |
| Length Imperial | 3.245'' |
| Stem Diameter Metric | 5.00 mm |
| Collar Material | Titanium |
Fitment
| 2019-2025 | Yamaha | YZ250F |
