Prox Steel Exhaust Valve conversion kitRef : PRO00515A / 1004722

PROX Steel Exhaust Valve Conversion Kit designed for Yamaha YZ250F and WR250F. This kit provides a robust solution for the exhaust distribution of 250cc 4-stroke cylinders, suitable for motocross and enduro use where mechanical strength and heat resistance are essential.

• One-piece forged steel exhaust valves
• Complete kit delivered with springs for a clean installation
• Designed for the engine reference of the models listed below

The forged steel valves offer excellent wear resistance and good performance under thermomechanical stresses encountered on the track or during trail rides. The one-piece construction minimizes the risk of delamination and facilitates the seating/lapping on the valve seats during engine refurbishment. The kit includes the necessary springs to restore a complete valve train and properly prepare the cylinder head before adjustment.

Main compatibilities:

• YAMAHA YZ 250 F (CG39) (2018)
• YAMAHA WR 250 F (RE25) (2018)
• YAMAHA YZ 250 F (CG34) (2016)

Manufacturer's ref: 28.SES2414-1