Bilstein EM46 Series - Suspension Shock Absorber - 33-286877Bilstein EM46 Series shock absorbers are emulsion dampers that feature an all steel smooth body construction and 46mm piston for motorsports applications. The shock absorbers also include a large 22mm shaft, severe duty 3 stage high temperature rod seal and can convert to coilover usage (kit sold separately). EM46 Series shock absorbers are ideal for racers looking for a rebuildable shock with the ability to create and fine tune spring rate as a