KIT EX VALVE+SPRING YZF250, PROX 28.SES2402-1 GASGAS, EXHAUST

Prox Steel Exhaust Valve/ HD 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.

Yamaha WR250F (2001-2013), Yamaha YZ250F (2001-2013),
Gas-Gas EC250F (2010-2015), Gas-Gas EC300F (2013-2015),

PROX 28.SES2402-1