Restore strong compression and dependable performance with this PROX piston kit, manufactured in Japan and designed as a high-quality OEM replacement. The piston is cast from a high-silicon-content aluminum alloy that meets or exceeds OEM specifications, then CNC-machined to extremely close tolerances for consistent fit and durability.
This kit is an ideal solution when your top end is worn, compression is dropping, or you’re planning preventative maintenance—helping your 125cc 2-stroke run cleaner, start easier, and stay reliable under hard riding.
Key features:
✅ Japan manufactured and designed to be an OEM replacement
✅ High-silicon aluminum alloy construction meeting or exceeding OEM specs
✅ Complete kit including piston, ring kit, wrist pin and circlips
Benefits of use:
🔹 Reliable rebuild quality for everyday riding and demanding use
🔹 Precise CNC tolerances for proper fitment and consistent performance
🔹 Convenient all-in-one kit—everything needed for a standard piston replacement
Technical specifications:
📌 Brand: PROX
📌 Engine type: 2-Stroke
📌 Displacement: 125 cc
📌 Bore size: 54.00 mm (Standard)
📌 Piston size: 53.96 mm
📌 Material: Aluminum alloy
📌 Skirt coating: Non-coated
📌 Type: Standard Size B
📌 Vendor part number: 01.4223.B
Why choose this product?
⭐ Built to OEM-level standards for dependable top-end servicing
⭐ A complete kit that simplifies ordering and installation prep
⭐ Great choice for routine maintenance to keep your engine performing at its best
