New PROX Steel YZF 450 Exhaust Valves & Spring Kit
Special features on this kit:
- 21-4N Stainless Steel Valves for increased durability and less wear under extreme conditions.
- Black Nitrided valves offer high microhardness while supersmooth surface finish reduces friction between stem and guide.
- Fully rebuildable with OEM retainers, bases and seals without the need of any further engine modifications.
Fits: YZF 250 02-09
