KIT IN VALVE+SPRING YZF450, PROX 28.SIS2444-2 INTAKE
Prox Steel INTAKE Valve/Spring Kit. This kit contains steel intake valves and specially designed stronger valve springs. The ProX titanium into steel conversion extends lifespan compared to OEM titanium valves. The kit replaces OEM valves and valve springs and can be installed using OEM retainers, bases, and valve seats. SKU 65-K160.PX. Part number 28.SIS2444-2.
- SKU
- 65-K160.PX
- Brand
- Pro-X Racing
- Availability
- In Stock (1)
FULL DESCRIPTION
ProX Steel Intake Valve and Spring Kit for Yamaha YZ450F
Upgrade your engine's performance and durability with the ProX Steel Intake Valve and Spring Kit. This kit is designed to replace OEM titanium valves and offers a significant increase in lifespan, lasting up to three times longer.
Engineered for direct replacement, this kit includes high-quality steel intake valves and specially designed, stronger valve springs. The increased weight of the steel valve necessitates a heavier spring to ensure optimal performance and longevity. You can utilize your OEM retainers, bases, and valve seats for a straightforward installation.
Key Features:
- Durable steel intake valves for extended lifespan
- Stronger, custom-designed valve springs to accommodate steel valve weight
- Direct replacement for OEM valves and springs
- Utilizes existing OEM retainers, bases, and valve seats
- Designed to outperform and outlast standard titanium valves


