Wossner Piston Kit KTM 85 SX 2003-2025 47.02mm 8147DC

The Wossner Piston Kit 8147DC is engineered for KTM 85 SX riders who demand reliability and consistent power delivery across the entire RPM band. Two-stroke pistons experience extreme thermal and mechanical stress, and a quality forged piston directly impacts engine longevity, throttle response, and overall durability. This complete kit eliminates guesswork during top-end rebuilds, providing everything needed for a proper installation without sourcing individual components.

Why This Kit Matters: The 4032 T6 forged aluminum alloy and permanent skirt coating work together to reduce friction and piston rock—critical factors for maintaining compression integrity and minimizing wear on your cylinder walls. Wossner's FEA optimization ensures that every dimension, wall thickness, and contact point is refined for your specific engine, not a generic approximation.

• 4032 T6 forged aluminum
• Permanent skirt coating
• Includes rings, pin, clips
• 47.02mm bore diameter
• Heat-treated T6 specification
• German-engineered design
• FEA-optimized geometry
• Fits KTM 85 SX 2003-2025
• Complete top-end rebuild kit
• Bolt-on installation