Ultima | Rear Shock Absorber HD Gas | Land Rover Defender Discovery 1 Range Rover Classic 1983–2003 | 400515Ultima Rear Heavy Duty Shock Absorber (Single) for Land Rover Defender, Discovery 1, & Range Rover Classic 19832003 This Ultima Rear Heavy Duty Shock Absorber (400515) is a robust, gas charged component from the 40 Series, designed to enhance the rear suspension performance of three Land Rover icons: the Defender 90 110 130, the Discovery 1, and the Range Rover Classic. Engineered for superior damping and control, this heavy duty shock improves