D2 Racing Air Struts w Vera Basic Management Tesla Model 3 4WD 2017 D2 Racing Air Struts w VERA AccuAir e+ Connect Pressure BMW Z4 D2 Racing Air Struts w Vera EVO Management Tesla Model 3 4WD 2017 1998 2005 VW Volkswagen Passat Sedan FWD D2 Racing RS Coilovers Shocks. ABOUT D2 AIR STRUTS D2 Racing Air Struts allow for adjustment through both the lower mount and inflatable air bag portion. Each air shock features a 36 way damping adjustable internal shock design for fine tuning of ride quality and response. Kit Includes: D2 Racing front suspension D2 Racing rear suspension (4) 1 4 tube 1 8 BSPT compression elbows (2) Spanner tools (4) Damping adjustment knobs