01-'13 for Yamaha WR250F PROX Exhaust Valve Conversion Set Ti-Steel Gas/Yam Diamond Engineering's special hex flange

Diamond Engineering's special hex flange rocker box bolts are included for Twin Cam models

Features clean aerodynamic shape

MPN: 530VX3X110ZB

Manufacturer: Accel

01-'13 for Yamaha WR250F PROX Exhaust Valve Conversion Set Ti-Steel Gas/Yam Diamond Engineering's special hex flangeManufacturer: Pro X MPN: 28. SES2402 1 Title: Steel Valves and Spring Kits Option: Exhaust An alternative where the O. E. M. application uses expensive and less durable titanium valves These steel valves offer increased durability and easily extends the lifespan to 3x that of the O. E. M. titanium valves Nitrided valves offer high micro hardness while a super smooth surface finish reduces friction between stem and guide Special stronger valve springs