RacingBros Mono R Kawasaki Z125 Pro shock allows you to adjust the spring pre-load to increase the stiffness of the rear suspension, and you can also adjust the rebound on the fly. Spherical bearings are used on mounting ends instead of typical bushings to give the rider precise suspension feedback! Highly recommended for all type of riders/racers and for those who are canyon carve during the weekend!
Spring rate out of the box is 145n/mm. Stiffer (186n/mm) springs are also available for those with an extension kit!