Here is the original TOP RACING by JASIL type crankshaft for your MBK 51 / Motobecane AV7 - AV10 which is currently one of the best quality / price ratio on the market and above all one of the most upscale! The Top Racing crankshaft is a reinforced model, it is really intended for the reinforcement of the low engine.
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From its Portuguese manufacture, it is made of very good quality steels, the balancing is as originally and the connecting rod is also a reinforced cast model. In short, this crankshaft will resist most original or moderately prepared engines. The connecting rod size, the stroke, the diameter of the bristles remain as the origin.
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Keying: yes
Crankshaft silk: Ø16mm (origin)
Masses: full
Connecting rod length: 85mm (original)
Cage: included original size reinforced
Reinforced: yes (original engines, small and medium preparations)
Stroke: origin 41.80mm
Thread on the ignition side: normal, not on the right or reversed on the left as desired