The Naraku Full Beam Racing Crankshaft increases the pre-compression in the crankcase, resulting in a significantly better filling level. The power speed shifts to the upper range. The larger oscillating mass of the full-metal version not only increases the power, but also the torque. In contrast to the Naraku HPC shaft with plastic inserts, the full metal version should only be used from a displacement of 70cc. The crankshaft is supplied with piston bolt bearing for 10mm piston pins. Comparison numbers: Neu & Originalverpackt.