Vertex Yamaha Top End Rebuild Kit - 4 Stroke

Vertex top-end kits include; piston, rings, circlips, piston pin, base gaskets, head o-rings and piston pin bearing. Cam Chain if its 4 stroke

• 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 end piston kit includes: piston, rings, pins, circlips, base gaskets, head o-rings and wrist pin bearing when applicable.
• Kits are exact O.E.M. replacements
• Replica KTM 2-stroke pistons are factory supplied to KTM
• Two-stroke piston kits made from gravity cast aluminum alloy with 18% silicone content, which produces an extremely light but very strong piston