PROX Forged Piston Kit is designed for riders who want a durable, precise and reliable piston solution for 4-stroke engine rebuilds. Made from a specific low-expansion forged aluminum alloy, it helps reduce friction while maintaining stability under high temperatures and load—ideal when you want consistent performance and long service life.
If your engine is losing compression, consuming oil, or you’re planning a preventative top-end service, this piston kit provides a trustworthy refresh. PROX pistons are precision-machined on modern CNC equipment, supporting accurate fitment and smooth operation.
Key features:
✅ Low-friction forged aluminum alloy for increased reliability
✅ Precision CNC machining for consistent quality and fit
✅ Uses the same low-expansion piston alloy concept found in major Japanese engine manufacturers
Benefits of use:
🔹 Helps restore compression and engine efficiency during rebuilds
🔹 Reduced friction supports smoother running and durability under load
🔹 Forged construction is a strong choice for demanding riding conditions
Technical specifications (if needed):
📌 Engine type: 4-Stroke
📌 Piston diameter: 77.96 mm
📌 Compression ratio: 14.1:1
📌 Piston material: Forged aluminum alloy
📌 Ring material: Steel
📌 Style: Forged Replica
📌 Size: Standard Size A
📌 Units: Kit
📌 Brand: PROX
📌 Vendor part number: 01.4351.A
Why choose this product/service?
⭐ Proven PROX quality focused on low friction and long-term reliability
⭐ Precision manufacturing for confident installation and dependable performance
⭐ A smart choice for maintenance planning and keeping your engine running strong
