Cylinder -MALOSSI 86 cc MHR Big Bore (44mm stroke)- Piaggio LC 2-stroke

With the MHR BIG BORE kits MALOSSI counters in the high-end class with 85 ccm.

It is far from being a simple enlargement of the bore to 50 mm. A closer look reveals the completely redesigned port layout of the cylinder. With small tricks the flushing behaviour was clearly optimized and adapted to the latest state of modern 2-stroke tuning.

The cylinder must be driven with a long stroke shaft with 44 mm stroke and 85 mm connecting rod length as well as 13 mm piston pin. A high quality racing crankshaft with appropriate bearings, which can cope with the immense power, is a must anyway.

Thanks to the increased displacement and the new port layout, power outputs of 26 hp and more are possible.

In order to mount the cylinder, the engine block must be spindled up to 56.7 mm in the area of the cylinder base mount.
_{AI-translation}