Important note:
This piston is for a stock sized bore. Please measure your cylinder to check clearance before ordering.
Vertex Four-stroke Pistons
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When it comes to power and performance, Vertex four-stroke pistons are hard to beat. Vertex pistons are perfectly suited to handle the rigors and high pressures of today's modern four-stroke engines. Plus, to aid in the break-in process and reduce wear, every Vertex piston utilizes a unique Molybdenum Disulphide (MOS2) coating on the piston skirt.
- Heat-treated with a T-5 hardening and tempering cycle.
- 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.
- Forged Replica pistons are forged O.E. replacements.
- Replica pistons and all rings are O.E.M. replacements.
- Kits include piston, rings, wrist pin and circlips.
Detailed Specifications:
- Type: Replica piston kit, +0.50 mm makes 401cc.
- Compression ratio (x:y): 9.3:1.
- Cylinder diameter (mm): 85.50.
- Displacement (cc): 401.00.
- Piston diameter (mm): 85.47.
- SizeOverStandard: 0.50.
