Piston Kit

Refresh your 250cc 4-stroke top end with a high-quality WOSSNER Premium Series piston kit. Forged from aerospace-grade aluminum alloy and optimized for low weight without sacrificing strength in critical areas, this piston is designed to deliver reliable performance and long service life. The permanent skirt coating helps reduce friction and piston rock, contributing to quieter operation and smoother power delivery.

Whether you are rebuilding after hours of hard riding or restoring lost compression, this complete kit provides the core components you need in one package—making your top-end service simpler and more dependable.

Key features:

• ✅ Forged aerospace-grade aluminum alloy for strength and durability
• ✅ Permanent skirt coating (molybdenum disulphite) to reduce friction and wear
• ✅ Optimized machining for lightweight performance while maintaining crown and skirt strength

Benefits of use:

• 🔹 Improved efficiency and smoother running thanks to reduced friction and piston rock
• 🔹 Convenient rebuild solution—all primary piston components included
• 🔹 Trusted Premium Series construction for demanding motocross/enduro use

Technical specifications:

• 📌 Brand: WOSSNER
• 📌 Vendor part number: 8814DB
• 📌 Engine type: 4-Stroke
• 📌 Displacement: 250 cc
• 📌 Bore size: 77.01 mm
• 📌 Piston diameter: 76.97 mm
• 📌 Compression ratio: 13.5:1
• 📌 Stroke length: 53.60 mm
• 📌 Design: Double bridge forging, two-ring design
• 📌 Included: Piston #8814DB, Ring Set #RIK77.00D, Wrist Pin #WP070-SP, Retaining Clips #CW16

Why choose this product?

• ⭐ Premium forged construction designed for serious riding conditions
• ⭐ Complete kit format reduces the risk of missing critical rebuild parts
• ⭐ Coated skirt helps extend service life and maintain consistent performance