Malossi Over Range Transmission Kit for Kymco AK550 COMPATIBILITY: Kymco AK550 This new system is based on Multivar MHR Next, which matched with the other parts – allows to achieve really unique performances! The torque driver (movable pulley) has a larger diameter compared to the original one and the very latest specifications, allowing to have a greater velocity-ratio range compared to the original pulley. Malossi engineers have also taken particular care in realizing this pulley right down to the smallest detail, using special materials and a particular type of thermochemical treatment that ensures exceptional surface hardness and therefore excellent wear and abrasion resistance. The fixed half-pulley completes the OVER RANGE: this component features a diamond finish of the belt-side pulley surface and a redesigned working angle to further increase the gearing range. The whole completion of OVER RANGE system is given by the torsion controller. **NOTE: Electrical, High Performance, Aftermarket items are non-returnable so please check photos and specifications before ordering. Please see our Warranty and Returns Policy