No more numb hands and feet. This engine design allows for the addition of a lateral balancer shaft, which helps keep engine vibrations to a minimum. This means you can keep charging harder for longer. BALANCER SHAFT2018-07-172020-10-29https://spinnin-wheel.com/wp-content/uploads/2019/08/logo_spinnin3.jpgSpinnin-Wheel AShttps://spinnin-wheel.com/wp-content/uploads/2018/07/pho_bike_det_300-xcw-2018-balancershaft_sall_aepi_v1.jpg200px200px