MotoForce Racing 70cc Cylinder – Minarelli AC

Affordable and reliable 70cc cast iron cylinder kit designed for everyday use on Minarelli horizontal air-cooled engines. Suitable for models like Yamaha Neo's, MBK Ovetto, Yamaha Jog R, Aprilia SR 50 and Malaguti F12 Phantom.

This cylinder is made from durable grey cast iron and features 5 transfer ports and a simple exhaust layout. It comes with a 2-ring piston (47 mm) and a high-compression cylinder head, ensuring good reliability and consistent performance.

With an output of approximately 6–9 hp, the cylinder focuses on strong torque rather than high RPM power. This results in better acceleration, smoother throttle response, and less stress on the engine—ideal for daily riding.

For best results, pairing it with a 17.5 mm carburetor, a sport CVT, and an exhaust like the Stage6 Pro Replica exhaust is recommended.

• 70cc cast iron cylinder
• Piston pin -> 10 mm
• Bore: 47 mm
• 2-ring piston for durability
• High-compression cylinder head
• Strong torque and good acceleration