Kit Cylinder 50cc Minarelli horizontal AC, Crankshaft and bearings with seals Allpro

AllPro kit consisting of the Cylinder original-type 50cc, standard crankshaft, and crankshaft bearing and seals kit, designed for air-cooled (AC) Minarelli Horizontal engines. This set offers a complete solution for repairing and renewing the engine assembly while maintaining the original factory specifications.

The Cylinder AllPro 50cc Minarelli Horizontal AC is designed as a direct replacement for the original Cylinder, maintaining the displacement and characteristics of the stock engine. Made of cast iron, it offers great wear resistance, good durability, and easy maintenance, making it an ideal option for restorations, repairs, or replacement of worn components.

Its original configuration allows the engine compression to be restored and balanced operation to be maintained, with power delivery similar to the factory setup. It is an economical and reliable alternative for getting air-cooled Minarelli Horizontal engines back into operation.

The kit also includes the AllPro Standard Minarelli Horizontal crankshaft, designed to maintain the dimensions and characteristics of the original crankshaft. This version uses a 10 mm piston pin, making it compatible with cylinders that use this configuration.

To complete the repair, the AllPro crankshaft bearings and seals are included, essential components to ensure proper engine operation, maintain crankcase sealing, and ensure adequate lubrication of the internal components.

Assembly requirements and recommendations

• Check that the engine uses a 10 mm piston pin configuration.
• Carry out proper Cleaning and inspection of the engine block before assembly.
• Always replace bearings and seals when installing a new crankshaft.
• Properly break in the Cylinder before demanding maximum performance.
• Use quality premix oil for 2-stroke engines.

Main features

• Complete renewal kit for Minarelli Horizontal AC 50cc engines.
• Original-type replacement Cylinder to maintain the stock configuration.
• Standard crankshaft with dimensions equivalent to the original component.
• Compatible with a 10 mm pin piston.
• Includes the bearings and seals required for a reliable rebuild.
• Ideal for repairs, restorations, and maintenance of 2-stroke engines.
• Economical solution for restoring the engine's original operation.

Application

Kit compatible with air-cooled (AC) Minarelli Horizontal 50cc engines fitted to models such as the Yamaha Aerox, MBK Nitro, Yamaha Jog, Aprilia SR, CPI Oliver, CPI Hussar, and other scooters equipped with this engine.

Important

Before installation, it is necessary to verify the exact engine version, especially the piston pin diameter and the configuration of the original Cylinder. This kit is designed to maintain performance equivalent to the original setup, not for high-performance tuning.