PROX Forged Piston Kit is designed for riders who want dependable 4-stroke engine performance with reduced friction and long-term reliability. The piston is made from a specific low-expansion forged aluminum alloy—chosen to help minimize friction and support consistent operation under heat and load. Precision CNC machining ensures accurate dimensions for a quality fit during rebuilds and performance refreshes.
This kit is a great choice when you are doing a top-end service, restoring lost compression, or simply aiming for a durable replacement that matches modern OEM-level materials. With a 14.2:1 compression ratio and steel ring material, it’s built to deliver strong, consistent sealing and performance.
Key features:
✅ Low-expansion forged aluminum alloy for reduced friction and maximum reliability
✅ Precision CNC machined for accurate fit and consistent quality
✅ OEM-style alloy technology similar to major Japanese engine manufacturers
Benefits of use:
🔹 Improved durability under demanding riding conditions compared to basic cast alternatives
🔹 Consistent fit and operation thanks to modern CNC manufacturing
🔹 Ideal solution for top-end rebuilds to restore performance and reliability
Technical specifications (if needed):
📌 Engine type: 4-Stroke
📌 Piston diameter: 77.97 mm
📌 Piston size: Standard Size B
📌 Compression ratio: 14.2:1
📌 Piston material: Forged aluminum alloy
📌 Ring material: Steel
📌 Style: Forged Replica
📌 Brand: PROX
📌 Vendor part number: 01.4350.B
Why choose this product/service?
⭐ Proven forged-alloy construction focused on reliability and reduced friction
⭐ Precision-machined kit designed for consistent rebuild results
⭐ A smart choice for riders who want a high-quality top-end refresh with trusted components
