Vertex Cast Replica Piston Kit 23621200 (+2.00mm Oversize, 54.44mm) — Kawasaki KX100 1995-2021

Vertex Cast Replica Piston Kit 23621200 — Kawasaki KX100 1995-2021 (+2.00mm Oversize, 54.44mm)

Product Description

When cylinder wear exceeds the limits of standard pistons, the Vertex Cast Replica Oversized Piston Kit (23621200) provides the perfect solution. Engineered to accommodate a +2.00 mm overbore, this kit allows you to reclaim your Kawasaki KX100's original compression and power output by machining your cylinder to match the 54.44 mm piston diameter.

Like all Vertex cast pistons, this unit is constructed from an 18% silicone gravity-cast aluminum alloy. This material composition is specifically selected to maintain structural integrity under extreme heat and prevent thermal expansion-related issues. The addition of a Molybdenum Disulphite (MoS2) skirt coating facilitates a smoother break-in period and enhances durability, ensuring your engine remains reliable during demanding riding.

Top Features: Vertex Cast Replica Oversized Piston Kit

• +2.00 mm Oversize: Engineered to restore engine performance in cylinders that have been machined/bored over standard size.
• Factory Precision: Designed to offer the same structural reliability and fitment as an original equipment component.
• Advanced Material: Gravity-cast aluminum alloy with 18% silicone stabilizes the piston shape under extreme temperatures.
• Moly-Coated Skirt: Coated with Molybdenum Disulphite for reduced friction, quicker break-in, and added protection against scuffing.
• T-5 Heat Treated: Undergoes a complete T-5 hardening and tempering cycle to maximize structural integrity and lifespan.

Important: This is an oversized piston intended for cylinders that have been bored and honed to a 54.50 mm diameter. Verify your cylinder machining specifications before installation.

Product Specs

• Piston Diameter: 54.44 mm
• Cylinder Diameter Required: 54.50 mm
• Oversize: +2.00 mm
• Engine Type: 2-Stroke

Fitment List

Year Range	Vehicle Model
1995-2021	Kawasaki KX100

Frequently Asked Questions

Q: Why do I need to bore my cylinder for this piston?
A: Standard pistons are designed for a standard-sized bore. Because this piston has a larger diameter (54.44 mm) than the factory stock piston, the cylinder must be professionally bored and honed to the 54.50 mm specification to ensure the correct piston-to-wall clearance.

Expert Pro-Tip: When installing an oversized piston, check your power valve clearance. Because you have increased the bore size, ensure that the power valve assembly does not make contact with the piston at any point during its travel to avoid catastrophic engine damage.

Recommended Pairings

• Essential Off-Road Motorcycle Tools
• High-Performance Premix & Gear Oils

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