The Wossner WO-3501-DB Forged Piston Kit is a Premium Series forged piston engineered for the HondaCRF250R. Featuring a 78.97 mm (+0.01 mm graded) piston with a 14.3:1 compression ratio, it is manufactured in Germany from high-strength forged aluminium to deliver exceptional durability, precise fitment and dependable performance in demanding motocross applications. :contentReference[oaicite:2]{index=2}

The 78.97 mm piston is intended for cylinders requiring the next grade size after accurate measurement, ensuring the correct piston-to-cylinder clearance is maintained. Each kit includes the piston, piston rings, wrist pin and retaining clips for a complete top-end rebuild. :contentReference[oaicite:3]{index=3}

Premium Series forged piston kit
Suitable for Honda CRF250R (2020–2025)
78.97 mm (+0.01 mm) graded piston
14.3:1 compression ratio
High-strength forged aluminium construction
Precision CNC machined for optimum fit and durability
Lightweight design for improved throttle response
Ideal for performance engine rebuilds
Includes piston, piston rings, wrist pin and retaining clips

Important: Always confirm your motorcycle model, year, cylinder condition and required piston size before ordering. The 78.97 mm graded piston should only be selected after accurately measuring the cylinder bore.

Notice: Product images may differ from the actual product. Images are provided for illustration purposes only and may show a representative item rather than the exact part supplied.