Piston Kit

Restore crisp 2-stroke performance with an OEM-quality piston kit. This PROX Piston Kit is manufactured in Japan and built to meet or exceed OEM specifications, making it a dependable choice for refreshes and top-end rebuilds. The high-silicon-content aluminum alloy construction and precise CNC machining help ensure excellent fit, stable running clearances and long service life.

When your engine starts losing compression or shows signs of wear, replacing the piston assembly is one of the most effective ways to bring back power, throttle response and reliability. This kit includes the key components you need in one package, helping you complete the job faster and with correct matched parts.

Key features:

• ✅ OEM replacement design – built to meet or exceed original specifications
• ✅ Japan-made & CNC-machined – extremely close tolerances for accurate fit
• ✅ Complete kit – piston, ring kit, wrist pin and circlips included

Benefits of use:

• 🔹 Reliable rebuild solution for worn top ends and reduced compression
• 🔹 Consistent performance thanks to precise manufacturing and quality materials
• 🔹 Convenient all-in-one package that saves time sourcing individual parts

Technical specifications:

• 📌 Brand: PROX
• 📌 Engine type: 2-Stroke
• 📌 Displacement: 300 cc
• 📌 Bore size: 72.00 mm (Standard)
• 📌 Piston size: 71.94 mm
• 📌 Compression ratio: Standard
• 📌 Material: Aluminum alloy (high-silicon content)
• 📌 Skirt coating: Non-coated
• 📌 Type: Standard Size A
• 📌 Vendor part number: 01.6394.A

Why choose this product?

• ⭐ Quality manufacturing and OEM-level fitment for dependable engine service
• ⭐ Includes the essential parts for a straightforward piston replacement
• ⭐ A smart choice for riders who want confidence and durability from their top-end rebuild