Forged Piston Kit

PROX Forged Piston Kit is built for riders and builders who want dependable 4-stroke performance with reduced friction and maximum reliability. Made from a specific low-expansion aluminum alloy and precision CNC-machined, this forged replica piston kit is designed to deliver consistent clearances, smooth operation and strong durability under load.

If you’re refreshing a worn top-end or aiming for a reliable rebuild, a high-quality forged piston kit helps restore compression and engine response while reducing the risk of premature wear in harsh riding conditions.

Key features:

• ✅ Forged aluminum alloy engineered to reduce friction and maximize reliability
• ✅ Precision CNC-machined on state-of-the-art equipment for accurate fit
• ✅ Uses a low-expansion, low-friction alloy comparable to major Japanese OEM standards

Benefits of use:

• 🔹 More consistent performance thanks to stable material expansion and precise machining
• 🔹 Helps extend service life in demanding riding/racing conditions
• 🔹 Great choice for top-end rebuilds where fitment, durability and confidence matter

Technical specifications:

• 📌 Engine type: 4-Stroke
• 📌 Piston diameter: 77.98 mm
• 📌 Compression ratio: 14.2:1
• 📌 Piston size: Standard Size C
• 📌 Piston material: Forged aluminum alloy
• 📌 Ring material: Steel
• 📌 Style: Forged Replica
• 📌 Units: Kit
• 📌 Brand / Part No.: PROX 01.4350.C

Why choose this product?

⭐ Quality-focused forged construction for demanding engine work
⭐ Reliable, OEM-style material choice aimed at low friction and durability
⭐ Ideal for rebuilds where accurate machining and consistent fit are essential