Vertex Top End Piston Kit Size B Yamaha YZ125 2005 - 2021 Gearbox Oil Special alloy steel

Special alloy steel

The Factory 4

Adjustable closure belt

is replaceable

Strength inserts for added flexibility and comfort

Vertex Top End Piston Kit Size B Yamaha YZ125 2005 - 2021 Gearbox Oil Special alloy steelVertex top end kits include; piston, rings, circlips, piston pin, base gaskets, head o rings and piston pin bearing. All pistons are heat treated with T 5 hardening and a tempering cycle New T box forgings and DLC coated wrist pins on forged pistons with highest compression ratios for increased strength and performance. Piston skirts are coated with a hi tech molybdenum disulphide for faster break in time Nitride coating for increased piston life Top