ICON Stage 4 suspension with tubular upper control arms for 2021–2023 Ford Bronco adds remote reservoir coilovers to increase travel and sustained damping. Adjustable coilovers yield 3–4" front lift and 2–3" rear lift over stock, while tubular UCAs provide caster correction and feature the Delta Joint PRO. Remote reservoirs improve shock cooling to reduce fade during prolonged off-road use.