The VERTEX Cast Replica Piston Kit is a dependable, OE-style solution for refreshing your 2-stroke top end and restoring consistent compression and performance. Made from gravity-cast aluminum alloy with 18% silicone content, it’s designed to match original fit and function while delivering durability for regular riding and racing use.
To make installation and break-in easier, the piston is heat treated using a T-5 hardening and tempering cycle, and the skirt features a high-tech molybdenum disulphite (MoS2) coating to help reduce friction. The result is faster break-in time and increased piston service life—ideal when you want a straightforward rebuild with trusted components.
Key features:
✅ T-5 heat treated piston for improved durability
✅ Molybdenum disulphite skirt coating for reduced friction and quicker break-in
✅ Cast OE replacement design (gravity-cast aluminum alloy, 18% silicone)
Benefits of use:
🔹 Restores top-end performance and standard compression reliably
🔹 Helps extend piston life thanks to low-friction skirt coating
🔹 Complete kit simplifies your rebuild with all essential parts included
Technical specifications:
📌 Engine type: 2-Stroke
📌 Displacement: 85 cc
📌 Cylinder diameter: 48.50 mm
📌 Piston diameter: 48.45 mm
📌 Model: Cast Replica
📌 Included: piston, 2x rings, wrist pin, circlips
📌 Vendor part number: 22803B
Why choose this product?
⭐ Trusted VERTEX quality in an OE-style cast replacement kit
⭐ Practical “all-in-one” package for a clean, correct top-end service
⭐ Coating and heat treatment focused on smoother break-in and longer service life
