Vertex Top End Kit 4T CRF250R 04-07 Compr 12.9:1 (77.97)

• Forged pistons are forged from 2618 aluminum for superior strength and durability
• Forged high compression pistons improve power and torque across entire RPM range
• Pistons are heat treated with a T-5 hardening and tempering cycle
• T-box forgings and DLC-coated wrist pins on forged pistons with highest compression ratios for increased strength and performance
• All piston skirts are coated with a high-tech molybdenum disulphide coating for faster break-in time and increased piston life
• Forged replica pistons are forged O.E.M replacements
• All rings are O.E.M replacements
• Top end piston kits include piston, rings, pins, circlips, top end gaskets and wrist pin bearing when applicable