Yamaha 2 stroke Vertex Top end piston kits
Top-end piston set including needle roller bearings, clips and top end gasket set , Piston kit.
A size is recommended for new cylinders
B size is recommended for first and subsequent piston changes. (See handbook tolerances for when to use C size)
All pistons are heat treated with a T-5 hardening and tempering cycle
All piston heads are provided with a high-tech molybdenum disulfite coating in order to shorten the running-in period and extend the life of the pistons.
Cast piston sets are
Cast aluminum alloys (not forged) with 18% silicone, which result in an extremely light but very strong piston. Replica pistons and all rings are original spare parts