special crankshaft replacement in long race for maxi kit DERBI euro 3

Here you will find a long crankshafts replacement race for the Max engine kits mécaboite DERBI euro 3. Remember, the crankshaft has long run increase the engine displacement. They offer a clear increase in power and torque! They can be mounted on cylinders specially designed for a long run, but also on kits 70cc or 80cc standard, with a wedge and changing ... housings.