Piston Kit (Cast Race)

Race-proven VERTEX performance in a durable cast piston kit. The VERTEX Cast Race piston is developed with Vertex technology and a race shape profile to deliver reliable power and consistent running in demanding motocross and enduro use. Each piston is T-5 heat treated for strength and stability, while the high-tech molybdenum disulphide skirt coating reduces friction and helps shorten break-in time.

If you’re refreshing an 85cc 2-stroke top end, this complete kit makes the job straightforward by including the key components you need in one box—helping you restore compression, reduce wear risk, and get back to crisp throttle response.

Key features:

• ✅ Cast Race design with Vertex race-profile shape for performance-focused fit
• ✅ T-5 heat treatment (hardening & tempering) for durability under load
• ✅ Moly-coated skirt for reduced friction, faster break-in and longer piston life

Benefits of use:

• 🔹 Quicker, easier top-end refresh thanks to a complete kit (no missing small parts)
• 🔹 Smoother operation from friction-reducing skirt coating and quality ring materials
• 🔹 Confidence in harsh conditions with strong, lightweight 18% silicon cast alloy construction

Technical specifications:

• 📌 Brand: VERTEX
• 📌 Vendor part number: 24582D
• 📌 Engine type: 2-Stroke
• 📌 Displacement: 85 cc
• 📌 Bore size: 48.50 mm
• 📌 Piston diameter: 48.47 mm
• 📌 Piston size: Standard Size D
• 📌 Material: Cast aluminum alloy (18% silicon)
• 📌 Skirt coating: Moly coated
• 📌 Ring material: Nitride-coated steel
• 📌 Compression ratio: Standard
• 📌 Units: Kit

Why choose this product?

• ⭐ VERTEX quality with race-developed piston profile and controlled manufacturing
• ⭐ Coatings and heat treatment designed to extend service life in off-road riding
• ⭐ Complete kit contents help ensure a correct, efficient rebuild