Piston Kit

This PROX Piston Kit is manufactured in Japan and designed as a precise OEM replacement, helping you restore engine performance and reliability during a rebuild. Thanks to a high-silicon-content aluminum alloy and CNC machining to extremely close tolerances, it delivers consistent fitment and durability—ideal when you need a dependable top-end refresh without compromises.

Whether you’re addressing loss of compression, wear, or planning preventative maintenance, this complete kit provides the essential components needed for a proper installation and smooth running.

Key features:

• ✅ Manufactured in Japan and designed to be an OEM replacement
• ✅ High-silicon aluminum alloy that meets or exceeds OEM specifications, CNC-machined to close tolerances
• ✅ Complete kit: piston, ring kit, wrist pin and circlips

Benefits of use:

• 🔹 Restores compression and helps bring back crisp, consistent engine performance
• 🔹 Precision machining supports proper fit and long-term reliability
• 🔹 All-in-one kit reduces guesswork and saves time during assembly

Technical specifications:

• 📌 Brand: PROX
• 📌 Vendor part number: 01.6343.B
• 📌 Bore / piston diameter: 66.35 mm
• 📌 Piston size/type: Standard Size B
• 📌 Material: Aluminum alloy

Why choose this product?

• ⭐ OEM-replacement design for trustworthy fit and function
• ⭐ High-quality materials and manufacturing for dependable service life
• ⭐ Complete contents (rings, pin, circlips) for a smoother rebuild process