Malossi MHR RHQ Crankshaft (HPC) 85mm / 12mm for Minarelli – Full-Cheek Crankshaft for more RPM Performance

With the Malossi MHR RHQ Crankshaft, you get a very high-quality performance crankshaft for Minarelli engines. The abbreviation HPC (High-Primary-Compression) means that it is a full-cheek crankshaft. The advantage: Due to the higher primary compression, the mixture in the crankcase is better pre-compressed – this ensures better filling and shifts the RPM range noticeably upwards.

Bottom line: slightly less acceleration in the lower range, but more power in the upper RPM range – exactly the right thing if you are focusing on RPM and top-end in your setup, e.g., for a Yamaha Aerox 50, Aprilia SR 50 or MBK Nitro 50 (and many other Minarelli-based models).

Advantages / Features

• Malossi MHR RHQ – very high-quality crankshaft
• HPC / High-Primary-Compression = full-cheek crankshaft
• Higher primary compression for better filling
• Shift of RPM range upwards – ideal for sporty setups
• Slightly lower acceleration, but more power in the upper range
• Dimensions: 85mm / 12mm

Technical Details / Comparison Numbers

• Version: HPC full-cheek crankshaft (High-Primary-Compression)
• Dimensions: 85mm / 12mm
• OEM numbers (for comparison purposes): 53 8855, 538855
• ItemNo: M538855
• ItemID: 747552

Compatibility (Vehicles)

Fits many vehicles with Minarelli engines, such as Yamaha Aerox 50, Aprilia SR 50, MBK Nitro 50 – but also many other models from the list:

• Aprilia: Area 51 50; Scarabeo 50 2-stroke 1999-2009; SR 50 Netscaper LC water; Sonic 50 AC air; SR 50 LC water 1994-1997; SR 50 AC air 1994-1997; SR 50 Stealth LC water; SR 50 WWW AC air 2000; SR 50 Racing LC water 2000; Rally 50 LC water
• Italjet: Dragster 50
• KTM: Quadra 50; Chrono 50; Tempo 50; Go 50; Ark 50 LC water; Ark 50 AC air
• MBK: Nitro 50 1999; Equalis 50; Flipper 50; Evolis 50; Nitro R 50 2-stroke 2013; Sorriso 50; Nitro 50 Cat 2003; Mach G 50 LC water; Nitro 50 Naked 1PL 2013; Mach G 50 AC air
• Malaguti: F10 Cat. 50 1999-2004; Yestarday 50; Centro 50 Minarelli engine 2008; F10 Wap 50 CPI engine 2004-2008; F12 Phantom 50 LC water 2000-2004; F15 Firefox LC water 2004; F15 Firefox AC air 2004; F12 Phantom 50 AC air 2003-2006; F10 50 Jetline 1999; F12 Phantom R 50 AC air
• Yamaha: Aerox 50 1999; Aerox R 50 2013; Axis 50; Vino Classic 50; Neos 50 from model year 07 2007 to model year 07 2007; Why 50; Breeze 50; Jog 50; Aerox R 50 Naked 2013; Jog R 50 AC air

Why Malossi?

Malossi has stood for precisely manufactured performance parts in the scooter and racing sector for years. The MHR/RHQ components are designed to function reliably in sporty setups and to fully exploit your RPM potential – perfect if you want to get more top-end out of a Yamaha Aerox 50, an Aprilia SR 50 or an MBK Nitro 50.