High-end full-circle crankshaft from Malossi for Minarelli horizontal engines, ideal for performance and racing setups. The HPC (High Primary Compression) design increases pre-compression in the crankcase for improved cylinder filling and higher revs.

Built for up to 16,000 rpm, it offers exceptional strength and precision — perfect for 70cc sport or racing cylinders.

Specifications:

• Fits Minarelli horizontal engines (Yamaha Aerox, MBK Nitro, etc.)
• Piston pin: 10mm
• Stroke: 39.3mm (standard)
• Connecting rod: 80mm (standard)
• Includes small end bearing (10x14x13mm)