Application : For Jaguar XJ / XJ8 / XJR 2003-2009 Chassis Code：X350 / X358 Specifications Adjustable height: lowering 1-3 inch Damping: 24 levels rebound damping adjustable Top mounts: standard rubber top mounts for front and rear Spring rate Front: 14 kg/mm (784 lbs/in) Spring rate Rear: 8 kg/mm (448 lbs/in) Spring length Front: 230mm Spring length Rear: 230mm Coilover overall length Front: 500mm-600mm Coilover overall length Rear: 570mm-690mm Shock type: Twin tube Spring Preload: 7-10 mm Package included: complete coilovers for 2 front and 2 rear a pair wrench for height adjustment Feature 1. Lowered height adjustment from 1" - 3" which allow lower center of gravity and also add a more aggressive stance 2. A 24 rebound damping adjustment level allows you the ability to perfectly dial in your coilover setup. You will experience better ride quality in all road conditions. 3. Rubber top mounts help to deliver a smooth and forgiving ride for city use at any speed and rubber joints