## Piston without rings 72.50mm R-9, Ovalized, Aluminum K20, Simson AWO 425 250 Sport This high-quality piston without rings, with a diameter of 72.50mm, made of durable K20 aluminum alloy, is the ideal choice for owners of Simson AWO 425 250 Sport motorcycles. Produced by the renowned Polish brand Almot, it guarantees long life and reliability. ### Ovalization for a better fit The oval shape of the piston (R-9) ensures a precise fit to the cylinder, minimizing friction and improving engine performance. Ovalization compensates for the thermal expansion of the piston during operation, resulting in longer life and quieter operation. ### Strength of K20 aluminum alloy The K20 aluminum alloy is characterized by high strength and resistance to high temperatures, which is crucial for parts operating in the extreme conditions of an engine. A piston made of K20 aluminum is resistant to wear, ensuring long-lasting and trouble-free engine operation. ### Almot Brand - a guarantee of quality Almot is a recognized Polish manufacturer of motorcycle parts, known for its high quality and precision. By choosing an Almot piston, you are investing in the reliability and longevity of your Simson AWO 425 250 Sport motorcycle.