Your search for "Sway Bar" revealed the following:

E9X / E8X Coilover Completion Kit (For Ohlins,MCS,JRZ,AST,etc)

THIS KIT INCLUDES THE FOLLOWING:  1 Pair Ground Control Racing Camber/Caster Plates4 Eibach ERS springs, any racing spring rate4 Ground Control bump stops (made in Germany)2 Rear ride height adjusters.These kits are intentionally equipped with a rigid camber/caster plate design for on-track applications. Because of this feature, some noise may...