Left and Right Performance Arm Kit with Caster increase 1 Degree Positive Caster Change per Side. Up to 0.5 Degrees Negative Camber Change. Please read fitting Instructions Caster Increase Alloy Arm with DuroBall Rear Bushing & built in Camber Change SuperPro Alloy Control Arm Assemblies deliver more caster, camber and eliminates unwanted flex. Fitted with the SuperPro DuroBall rear bushing and for maximum arm control, this arm is the best upgrade available! SuperPro Tip: Care needs to be taken with aggressively lowered vehicles with non standard tyre and wheel packages to avoid tyre/guard contact.