Adjustable Upper Rear Control Arms – Toyota HDJ80/80 Series Pair of adjustable upper rear control arms for Toyota Land Cruiser 80 Series (HDJ80, HZJ80, FZJ80).The upper rear control arms for the Toyota Land Cruiser 80 Series are essential suspension components designed to restore and optimize vehicle stability, handling, and axle articulation, especially during heavy-duty off-roading and demanding overland expeditions.Manufactured entirely in Italy, these HM4X4 control arms are crafted from high-strength steel to deliver maximum resistance to bending and extreme mechanical stress.Key Features: Reinforced Heavy-Duty Construction: Heavy-wall tubular design (8 mm thickness) built to withstand high loads without deforming under stress. Corrosion Protection: High-quality zinc-plated finish to prevent rust and protect against harsh mud, moisture, and road salt environments. Geometric Adjustability: Allows precise length adjustments to correct pinion angle, caster, and rear axle alignment following suspension lift kit installations. This restores correct suspension geometry, minimizes drive-shaft vibrations, and prevents uneven tire wear. Dual Johnny Joint Setup: Unlike standard or conventional control arms, these feature heavy-duty Johnny Joints on both ends. This configuration delivers maximum axle articulation and flex on technical trails, isolates chassis bind, and ensures superior long-term durability under heavy loads. Installing these control arms ensures proper rear axle alignment after fitting a suspension lift, providing confidence-inspiring handling, safety, and maximum off-road wheel travel.