FDY Performance
KIT EX VALVE+SPRING KX250F, PROX 28.SES4335-1 EXHAUST
KIT EX VALVE+SPRING KX250F, PROX 28.SES4335-1 EXHAUST
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Prox Steel Exhaust Valve/Spring Kit
Prox is offering a wide range of titanium into steel conversion kits. The ProX titanium into steel extends 3 times the lifespan up the OEM titanium valves. The kits contain a set of steel intake or exhaust valves plus a set of special designed stronger valve springs. due to the extra weight of the steel valve a heavier valve spring must be used! The ProX kit just replaces the OEM valves & valve springs and can be installed using the OEM retainers, bases and valve seats.
Suzuki RM-Z250 (2004-2006),
Kawasaki KX250F (2004-2016),
PROX 28.SES4335-1
FDY Performance – Engineered for riders who demand more.
At FDY Performance, we deliver precision-engineered motorcycle parts trusted by riders across the UK and beyond. Every component is tested for reliability, durability, and peak performance so you can ride harder, longer, and with confidence.
We’re not just a brand — we’re a movement built by riders, for riders. Whether you’re chasing podiums, upgrading your build, or maintaining your machine, FDY Performance keeps you on the road and at the top of your game.
📞 07765534854 | ✉️ fdy@fdyperformance.com | 🌐 www.fdyperformance.com
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