| Specification | Value |
|---|---|
| Application | Intake |
| Type | Conversion |
| Length | 3.040" / 3.000" |
| Riding Style | Off-Road / ATV |
| Stem Diameter | 0.1765" / 4.50 mm |
| Spring Seat Pressure | 39 lb |
| Head Diameter | 1.063" / 27.00 mm |
| Product Name | Valve and Spring Kit |
| Material | White Diamond Stainless |
| Spring Lift | 0,380" / 0.380" |
| Collar Material | Titanium |
| Spring Open Pressure | 86 lb |
| Valve Seat Height | 1.105" |
| Tulip Angle | 15° |
| Units | 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 |
|---|---|---|
| 2003-2009 | Yamaha | YZ450F |
| 2003-2016 | Yamaha | WR450F |
| 2009, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020 | Yamaha | YFZ 450 X 4x2 |
| 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2023, 2024, 2025 | Yamaha | YFZ450R |
| 2004-2009 | Yamaha | YFZ450 |
| 2010-2011 | Yamaha | YFZ450X |
- Supplier:
- Parts Unlimited
