The Wossner Premium Series 4-stroke piston kit is built for riders who want dependable performance during a top-end refresh without compromising durability. With a lightweight forged aluminum-alloy piston and a tight piston-to-wall clearance, it helps the engine run smoother and quieter while delivering consistent combustion.
To support long service life, the piston features enhanced wrist pin lubrication (including improved oiling slots and grooves) and a skirt coating that reduces friction for better break-in performance. Ring land treatment improves ring seal and oil control—helping maintain compression and reduce blow-by over time.
Key features:
✅ Enhanced piston pin oiling slots, radial boss machining and annular grooves for improved wrist pin lubrication
✅ Skirt coating to reduce friction and improve break-in performance
✅ Ring land treatment for improved ring seal and oil control
Benefits of use:
🔹 More consistent engine performance thanks to improved sealing and oil control
🔹 Reduced friction for smoother operation and improved durability
🔹 Convenient top-end service with a complete, matched kit of essential components
Technical specifications:
📌 Engine type: 4-stroke
📌 Bore size: 77.00 mm (Standard)
📌 Piston size: 76.96 mm
📌 Compression ratio: 13.5:1
📌 Material: forged aluminum alloy
📌 Included: Piston #8814DA, Ring Set #RIK77.00D, Wrist Pin #WP070-SP, Retaining Clips #CW16
Why choose this piston kit?
⭐ Premium forged construction with friction-reducing and sealing-focused treatments
⭐ All-in-one kit simplifies ordering the correct rebuild components
⭐ Ideal for a quality top-end rebuild where reliability and performance matter
