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H&r; Street Performance Coilovers BMW E39 5 Series and M5

H R Coilovers Engineered for street and occasional track use, H R Coil-Overs feature a fully-threaded shock body (not an imitation sleeve-over) that allows you to precisely dial in height adjustment to achieve optimum weight transfer, or simply get the aggressive look you've been looking for. Featuring H R's exclusive dynamic damper technology, each shock is engineered to work in harmony with a progressive-rate spring, together creating a finely-tuned suspension system. "The H R Coilover suspension is comfortable, but it whispers fun into the driver's ear, rather than using its 'library voice' of luxury" -- European Car. H R Exclusive Rear Height Adjusters H R prides itself on its numerous 'firsts' and innovations that have revolutionized the suspension industry. One of H R's ingenious creations is its exclusive, patented rear height adjusters. Used for height adjustment in vehicles that have a seperate rear spring / shock setup, the H R exclusive Rear Height Adjusters in effect replace the lower rear spring perch with an easily height adjustable spring seat design. Using a hex key, a simple twist of the wrist is all that is needed to raise or lower the rear of the car. H R's exclusive Rear Height Adjusters accompany some BMW applications. About Coilovers A coilover suspension basically gives you a matched lowering spring and shock absorber combination with the added benefit of adjustable ride height and spring rates through a moveable spring perch or perches. Coilovers are to your car's advantage by reducing unsprung mass, increasing suspension travel, and allowing the car to be corner balanced.