Bidalot Crankshaft Racing Factory stroke=44.9mm / conrod=90mm Derbi Euro 3 (D50B0)

Bidalot Crankshaft Racing Factory Derbi Euro 3 (D50B0) with 44.9mm stroke and 90mm connecting rod.

The main difference to the 2011 version is the larger diameter of the webs - they are larger by 3mm and now have an 80mm diameter. This means that you'll have to mill in your crankcase (82mm) to make room for them.

This is not the only difference, though. The balancing of the crankshaft was revised and improved, and high-density Tungsten counterweights now provide perfect balancing. As a consequence, the crankshaft's total weight was increased by 220g and is 1680g now. When it comes to racing , a heavier crankshaft has a clear advantages over a lighter one. The engine runs smoother and the throttle can be opened earlier. You can use longer transmissions to reach higher top speeds. Your engine will run more smoothly over a wider rpm range.

A 12x17x15mm small end bearing is included.

For Bidalot Factory 80cc and 86cc cylinders.