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Yellow Speed Club Performance 2-Way Coilovers for 1998-2003 BMW M5 (E39) qa1-adjustable-lower-trailing-arm QA1's Drag Racing Control ArmsYellow Speed Racing Club Performance 2 Way Coilovers for the 1998 2003 BMW M5 (E39) deliver race ready performance for track day enthusiasts, weekend racers, and club level competitors without sacrificing daily drivability. Featuring separate rebound and compression damping adjustment, this 2 way system gives drivers precise control over chassis behavior across varied driving conditions. Built with an external reservoir for increased oil capacity, the