Description
Kibblewhite - 09262739 - Valve and Spring Kit - 0.380" Lift - Yamaha YFZ450/R/X | WR450F | YZ450F '03-'09
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
| Length Imperial | 3.000'' |
| Stem Diameter Metric | 4.50 mm |
| Tulip Angle Imperial | 15° |
| Units | Kit |
| Head Diameter Imperial | 1.063'' |
| Product Name | Valve and Spring Kit |
| Collar Material | Titanium |
| Head Diameter Metric | 27.00 mm |
| Riding Style | ATV |
| Spring Lift Imperial | 0.380'' |
| Spring Open Pressure | 86 lb |
| Valve Seat Height Imperial | 1.105'' |
| Length Imperial | 3.040'' |
| Riding Style | Off-Road |
| Stem Diameter Imperial | 0.1765'' |
| Spring Seat Pressure | 39 lb |
| Application | Intake |
| Type | Conversion |
| Material | White Diamond® Stainless |
| Spring Lift | 0,380'' |
Fitment
| 2003-2009 | Yamaha | YZ450F |
| 2009-2020, 2023-2025 | Yamaha | YFZ450R |
| 2009, 2012-2020 | Yamaha | YFZ 450 X 4x2 |
| 2003-2016 | Yamaha | WR450F |
| 2010-2011 | Yamaha | YFZ450X |
| 2004-2009 | Yamaha | YFZ450 |
