Piston Kit for 4-Stroke

Refresh your 4-stroke top end with a precision PROX piston kit designed to restore compression, performance and reliability. Built from a low-expansion, low-friction aluminum alloy and precision-machined on modern CNC equipment, it delivers consistent fitment and dependable operation under demanding riding conditions.

If your engine is showing signs of wear—loss of power, increased oil consumption or reduced compression—this complete kit helps you rebuild the top end correctly with the essential components included in one package.

Key features:

• ✅ Complete kit: piston, rings, wrist pin and circlips
• ✅ Precision CNC machining for accurate fit and repeatable quality
• ✅ Low-expansion, low-friction aluminum alloy for stable clearances and durability

Benefits of use:

• 🔹 Restores engine compression and crisp throttle response
• 🔹 Reduces the risk of premature wear thanks to stable piston material characteristics
• 🔹 Simplifies a top-end rebuild by including the critical small parts in one kit

Technical specifications:

• 📌 Engine type: 4-Stroke
• 📌 Displacement: 450 cc
• 📌 Bore size: 95.00 mm (Standard oversize)
• 📌 Piston size: 94.97 mm
• 📌 Compression ratio: 12.5:1
• 📌 Skirt coating: Non-coated
• 📌 Material: Aluminum alloy
• 📌 Brand / Part No.: PROX 01.2429.C

Why choose this product?

• ⭐ Quality-focused PROX engineering for dependable rebuild results
• ⭐ Kit format helps ensure you replace matched components together
• ⭐ Ideal solution for a correct, service-ready top-end overhaul