Manufactured by BDS Suspension | 122321 | 2013-22 Ram 2500/3500 radius arm upgrade, BDS Suspension, Corrects the suspension geometry when used with 2-4" of lift kits.. Fabricated from Heavy Duty steel tubing with support gussets.. Direct bolt-in replacement for factory radius arms.. Finished in a durable textured black powder coat finish.. Product information updated on 2025-03-10. This product can ship by Courier