Ford Mustang 2005-14 Racing Coilovers Kits Adjustable Height and Dampers lowering kitIntroduction MaXpeedingRods B3 series(also called MaXpeedingRods SLC) based on MaXpeedingRods B2 series(also called MaXpeedingRods SNA) coilovers, which is also height adjustable but adds damping adjustment ability by a knob the top of the shaft. They are also made for street use, but the 24 level rebound damping control allows you the ability to perfectly dial in your coilover setup. You will experience better ride quality in all road conditions.