VERTEX Piston Kit - 91.93 mm - Yamaha WR/YZ400F 22567A

Piston Kit - 91.93 mm - Yamaha WR/YZ400F
The piston is heat-treated with aT-5 hardening and tempering cycle, The piston skirt is treated with a Molybdenum Disulphite coating for a faster break-in time and increased piston life, Forged replica piston is a forged OE replacement, Replica piston and all rings are OEM replacement, Piston kit includes piston, ring, wrist pin and circlips