Ohlins Road & Track Coilovers - BMW M3 E46The Ohlins Road and Track 2000 2006 BMW M3 (E46) coilovers give your vehicle a true racing experience without losing comfort when commuting to work. Our unique Dual Flow Valve (DFV) technology allows you to quickly change the stiffness of the shock absorber. When arriving to the racetrack, just turn the golden knob clockwise on the damper to set it in race mode this action changes all four areas in the damper; low and high speed compression and