Vertex

VTK22805A

Vertex Top End Kit - Standard Bore 76.94mm. 12.7:1 Compression VTK22805A

Pistons

All pistons are heat treated with a T-5 hardening and tempering cycle
All piston skirts are coated with a high-tech Molybdenum Disulphite coating for faster break-in time and increased piston life
Cast piston kits are gravity cast aluminum alloy (not forged) with 18% silicone content, which produces an extremely light but very strong piston
Forged pistons are forged from 2618 aluminum for superior strength and durability
Forged High Compression pistons improve power and torque across entire rpm range

All pistons are heat treated with a T-5 hardening and tempering cycle
All piston skirts are coated with a high-tech Molybdenum Disulphite coating for faster break-in time and increased piston life
Cast piston kits are gravity cast aluminum alloy (not forged) with 18% silicone content, which produces an extremely light but very strong piston
Forged pistons are forged from 2618 aluminum for superior strength and durability
Forged High Compression pistons improve power and torque across entire rpm range
Big Bore pistons increase engines displacement, torque, and peak horsepower
Forged Replica pistons are forged OE replacements
Replica pistons and all rings are OEM replacements
Top end piston kit includes piston, rings, pins, circlips, top end gaskets, and wrist pin bearing when applicable
Replacement two-stroke piston rings sold individually; four-stroke piston rings sold as a set


This Item Fits the Following Applications:
2001-2004 Yamaha YZ250F
2001-2004 Yamaha WR250F

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