Malossi MHR Crankshaft Piaggio scooter 13mm pin 44 stroke 90mm rod

Crankshaft Malossi MHR Team for Piaggio Scooter engines with 44 stroke, 90 Connecting rod and 13 pin.

Technical specifications:

• Semi-crankshaft material: 18 NiCr Mo5.
• Semi-crankshaft and monolithic forged rotating mass.
• Manufactured with machines and tools of the highest precision.
• With five heat treatments on all components.
• High surface precision to improve reliability.
• Dynamic balancing up to 16,000 rpm.
• Forged Connecting rod in 18 Ni Cr Mo 5, copper-plated, coupled to the Crankshaft with a precision roller bearing for high speed.

Improvements compared to the previous version 5316029

• 10% more inertial mass.
• Reinforced Connecting rod to withstand higher loads.
• The cross-sectional area of the Crankshaft on the transmission side has been increased by 10%, resulting in greater strength.
• The diameter of the oil seal has been increased from 19 mm to 20 mm to increase the resistance of the Crankshaft.

Attention!  Modifications must be made to the crankcase to install this Crankshaft.

Attention! You must carry out balancing checks before installing in the engine, since manufacturers deny warranty for any balancing fault found after installation.