SuperPro LR Defender 90/110/130 90-93 to chassis prefix KA Radius arm bush kit, for 0.5degree axle adjustment and caster correction. Inc. SPF2717K & SPF2559K for narrow radius arm refurbishment kit. Off set axle mount bushes for caster correction. Approx. 1.5 to 2 degrees caster increase (fixed position) and alignment correction chassis mount bushes for 0.5degree set-back adjustment. 1 set required. SAVE 16% OVER BUYING INDIVIDUALLY! Image for illustration purposes only