Malossi MHR HPC Crankshaft – Full-Cheek Shaft for More Primary Compression & High-Revving Performance

This very high-quality Malossi crankshaft is exactly what you need if you want to get more out of your engine. The abbreviation HPC (High-Primary-Compression) means: it is a full-cheek shaft. Due to the higher primary compression, the filling is improved – the power band shifts noticeably into higher RPM ranges. Result: slightly less acceleration, but more power at the top end.

Especially with Morini engines, the stock crankshaft is often a real bottleneck: the small crankshaft cheeks create an extremely low primary compression – a main reason for the rather weak stock performance. With this Malossi MHR HPC crankshaft, you address exactly this point. For many setups, it is true: proper tuners cannot do without this Malossi crankshaft.

Advantages / Features

• Malossi MHR crankshaft in very high-quality design
• HPC = High-Primary-Compression for higher primary compression
• Full-cheek shaft for better filling
• Power band moves into higher RPM ranges
• Result: slightly less acceleration, but more power
• Particularly useful for engines whose stock shaft has very low primary compression (e.g., Morini)

Technical Details

• Version: HPC / Full-cheek shaft
• Comparison OEM numbers: 53 8631, 538631

Compatibility (Vehicles)

Fits many models – for example, Italjet Formula 50 (AC/Air & LC/Water), Peugeot Kisbee as well as Suzuki Address 50 and other vehicles from the list.

• Italjet: Velocifero 50, Torpedo 50 2-stroke Morini engine, Formula 50 AC Air, Formula 50 LC Water
• Kymco: Agility RS 50 4-stroke, Agility City 50, Sento 50i
• Malaguti: Crosser 50
• Peugeot: Kisbee RS 50 4-stroke, Django 50 4-stroke, Kisbee II 50 4-stroke, Kisbee 50 4-stroke, Tweet 2 50 4-stroke, Tweet 2 50 RS
• Suzuki: Sepia 50, Street Magic 50, AP 50, Address 50
• TGB: Acros 50

Why Malossi?

Malossi has stood for precisely manufactured performance parts in the scooter and tuning sector for years. With the MHR HPC crankshaft, you get a solution designed for optimized primary compression and high-revving power delivery – perfect if your setup is intended to be more than just stock.