Piston Kit Cast for 2-Stroke OE Cylinder

ATHENA Cast Piston Kit for 2-Stroke OE Cylinder is designed to deliver OE-level reliability while coping with demanding riding conditions. Built from a special high-performance aluminum alloy with high silicon content, it offers excellent resistance to mechanical and thermal stresses for consistent engine operation. Each kit has been validated through progressive stress tests on engine dynamometer benches and then proven on track to confirm performance even in extreme use.

If you are refreshing a worn top end or completing a planned service interval, this piston kit helps restore compression and smooth power delivery while maintaining the intended stock compression ratio—ideal for dependable, repeatable performance.

Key features:

• ✅ High stress resistance to mechanical and thermal loads
• ✅ High-silicon 4032 aluminum alloy for OE-like reliability
• ✅ Dyno + track tested to validate performance in extreme conditions

Benefits of use:

• 🔹 Helps bring your 2-stroke engine back to strong, consistent running after wear
• 🔹 Durable cast construction suited for heat cycles and demanding riding
• 🔹 Stock compression setup supports predictable power characteristics

Technical specifications:

• 📌 Brand: ATHENA
• 📌 Engine type: 2-Stroke
• 📌 Displacement: 85 cc
• 📌 Bore size: 48.45 mm
• 📌 Piston head shape: Domed
• 📌 Material: 4032 Aluminum Alloy
• 📌 Piston size/type: Standard Size B / Type B
• 📌 Style: Cast
• 📌 Units: Kit
• 📌 Vendor part number: S4C04850003B

Why choose this product?

• ⭐ OE-style reliability from a proven high-performance alloy construction
• ⭐ Tested under controlled bench stress and real track conditions
• ⭐ A smart choice for a dependable top-end refresh on compatible 85 cc 2-stroke engines