Looking for the best coilover kit for your 997 4 or Turbo? Ohlins is arguably the only answer. The Ohlins Road and Track series coilover kit features the latest in single tube technology that use both through-rod damper technology, and Ohlins exclusive Dual Flow Valve (DFV) technology that allows you to quickly change the stiffness of the shock absorbers. These coilovers are light-weight, corrosion resistant, and fully rebuildable for a lifetime of service on street and track, and come with a two-year limited warranty. Ohlins dampers also feature one knob that operates individual compression and rebound adjusters that are pressure balanced, and have preload adjustability. Adjusting the magic golden knob changes all four areas in the damper; low and high speed compression and rebound damping. Product image may vary slightly from the actual kit that fits your vehicle.