| Specification | Value |
|---|---|
| Material | Black Diamond Stainless |
| Application | Intake |
| Spring Lift | 0.450" / 0,450" |
| Spring Open Pressure | 155 lb |
| Tulip Angle | 20° |
| Head Diameter | 37.00 mm / 1.457" |
| Spring Seat Pressure | 46 lb |
| Type | Conversion |
| Valve Seat Height | 1.185" |
| Collar Material | Titanium |
| Riding Style | Off-Road |
| Stem Diameter | 5.50 mm / 0.2158" |
| Units | Kit |
| Length | 3.280" |
| Product Name | Valve and Spring Kit |
- Stainless steel conversion kit includes only what's needed to convert your head to the long-life stainless steel Black Diamond intake valves
- 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
FITMENTS
| Year | Make | Model |
|---|---|---|
| 2014-2019 | Yamaha | YZ450F |
| 2016-2020 | Yamaha | YZ450FX |
- Supplier:
- Parts Unlimited
