Piston Kit (Cast Replica)

Bring your 85cc 2-stroke back to strong, dependable running with the VERTEX Cast Replica Piston Kit, made in the original OE form for an OEM-style fit and performance. This gravity-cast aluminum alloy piston is built to be extremely light yet strong, helping your engine maintain crisp response and consistent compression. With heat treatment and a low-friction skirt coating, it’s designed to break in faster and support longer service life.

If you’re refreshing a tired top end, fixing wear-related blow-by, or simply doing preventative maintenance, this kit provides a proven OEM-replacement solution with materials and treatments aimed at durability in real riding conditions.

Key features:

• ✅ Cast Replica design: cast piston in original OE form for OEM-style replacement
• ✅ T-5 heat treated: hardening and tempering cycle for strength and stability
• ✅ Moly-coated skirt: reduces friction for faster break-in and increased piston life

Benefits of use:

• 🔹 OEM-style reliability: ideal for standard compression top-end rebuilds
• 🔹 Smoother running & longevity: coatings and heat treatment help reduce wear
• 🔹 Great value for rebuilds: high-quality cast kit rather than a generic replacement

Technical specifications:

• 📌 Brand: VERTEX
• 📌 Vendor part number: 22803D
• 📌 Engine type: 2-Stroke
• 📌 Displacement: 85 cc
• 📌 Bore size: 48.50 mm
• 📌 Piston diameter: 48.47 mm
• 📌 Piston size: Standard Size D
• 📌 Compression ratio: Standard
• 📌 Piston material: Cast aluminum alloy (18% silicone)
• 📌 Ring material: Nitride coated steel
• 📌 Skirt coating: Moly coated

Why choose this product?

Quality and proven manufacturing from VERTEX, designed as a true OEM-replacement style piston kit. It’s a smart choice when you want dependable fitment, faster break-in characteristics, and long-term durability from your next top-end service.