Vertex Cast Race GP Style Piston Kit 23621A — Kawasaki KX100 1995-2013

Vertex Cast Race GP Style Piston Kit 23621A — Kawasaki KX100 1995-2013

Product Description

Unlock elite track acceleration and crisp throttle response with the Vertex Cast Race GP Style Piston Kit. Explicitly engineered for dedicated small-bore racers, this specialized top-end assembly features an aggressive single-compression ring architecture to minimize parasitic friction inside the cylinder. Upgrading to this premium Vertex 2-stroke race piston is the ultimate choice for competitive mini-moto riders looking to extract every fraction of horsepower during high-rpm motocross applications.

Manufactured in Italy utilizing a advanced gravity-cast process, Vertex infuses this aluminum alloy with an optimal 18% silicone concentration to control thermal expansion under intense engine loads. The entire structure undergoes a full T-5 hardening and tempering heat treatment cycle to improve structural rigidity, while the skirt features a specialized molybdenum disulphite coating for faster break-in cycles and reduced wear. By cutting weight and reducing internal friction, this unique GP-style configuration enables faster engine revs across your powerband.

Top Features: Vertex Cast Race Piston Kit

• Single-Ring GP Configuration: Employs just one premium compression ring to drastically minimize internal engine drag, boosting top-end power delivery.
• 18% Silicon Aluminum Alloy: High-silicon content increases wear resistance and stability, preventing unwanted piston deformation under extreme exhaust port heat.
• Advanced T-5 Hardening: Rigorous heat-treat tempering process maximizes structural strength to handle aggressive race schedules cleanly.
• Molybdenum Disulphite Skirt Coating: Lubricious barrier facilitates a safer initial engine break-in sequence while protecting vital cylinder wall cross-hatching.

Please review the detailed compatibility data below to ensure an exact fitment match for your motorcycle before finalizing your purchase.

Fitment List

Year Range	Vehicle Brand	Vehicle Model & Sub-Model
1995-2013	Kawasaki	KX100

Frequently Asked Questions

Q: What is the main performance benefit of a single-ring piston versus a dual-ring setup?
A: A single-ring piston cuts internal ring drag in half, allowing the engine to rev much quicker and make slightly more top-end power. Because it has less surface friction, it is the preferred setup for pure motocross racing, though it may require more frequent maintenance intervals than dual-ring designs.

Q: What does the "A" size mean on this Vertex 52.44 mm piston?
A: The "A" size is the standard initial replacement bore size for fresh or low-hour cylinders. If your cylinder has significant runtime or wear, you may eventually need to step up to a "B" or "C" size to retain optimal piston-to-wall clearances.

Expert Pro-Tip: Because single-ring race pistons run closer to the edge for maximum performance, checking your ring end gap during assembly is absolutely vital. Insert the ring into the top third of your cleaned cylinder using the upside-down piston to square it up, then use a feeler gauge to verify it matches Vertex factory specs. Correct end gap keeps the ring ends from binding together when the engine gets up to operating temperature.

Recommended Pairings:
o Kawasaki KX100 Performance Parts & Upgrades
o Kawasaki KX 2-Stroke Performance Parts
o Premium Motorcycle Chemicals & Premix Oils

At Moto-House MX, we carry the best brands in motocross and off-road performance. Our team has over 40 years of experience helping riders get more out of their bikes. Every order ships fast from our Central Florida location.

Moto-House MX – Choice of Champions – Clermont / Montverde, FL. Central Florida's premier powersports source with lightning-fast worldwide shipping.