Arnott designed new shock for the rear of 2015-2018 GM Truck (GMT K2XX) with Magneride, SK-5018 fits the right or left side of the vehicle. The new shock is built with a custom-tuned damper. This completely new shock includes a new polyurethane bump stop, protective dust boot, and new top and bottom mounts along with coil resistor to eliminate any suspension dashboard warning lights. This replacement GM rear shock is assembled by Arnott in the USA.