Bilstein 8100 ZoneControl Rear Shock Absorber for 2005–2016 Ford F-250/F-350 Super Duty Lifts Heavy Payloads Without Compromising Ride Control

Engineered specifically for heavy-duty trucks operating near their payload limit, this rear mono-tube shock absorbs impacts while offering four-position hydraulic ride-height adjustment to level the chassis as cargo weight increases.

• ZoneControl Hydraulic Adjustment: Rotate the threaded collar at the top of the shock body to select one of four positions (0 to +1.6 inches of rise), automatically raising the frame to match added trailer tongue weight, hitch accessories, or aftermarket bumper mass without extending wheel travel.
• Monotube Nitrogen-Gas Damping: Internally separates pressurized gas and oil to prevent fluid cavitation and fade during repeated heavy braking, towing, or steep descents, maintaining consistent resistance across extreme temperature ranges.
• Zinc-Plated Steel Construction: Corrosion-resistant coatings on the body and a hard-chrome polished guide shaft withstand road salt, moisture, and abrasive dirt typical of Super Duty work cycles and recovery operations.
• Exact OE Mounting Profile: Dimensions and eyelet geometry match factory specifications for direct replacement with original hardware; the design preserves clearance with stock rubber bump stops, eliminating the bracket modifications or premature stop wear common with budget shocks.
• Payload-Leveling Valve Calibration: Precision-compression and rebound valves counteract rear-end squat and trailer sway once payload exceeds 3,000 pounds, keeping steering response predictable without replacing factory coil springs.
• Lifetime Limited Warranty: Bilstein backs the 8100 series against manufacturing defects for the life of the vehicle, covering both daily drivers and commercial utility applications when installed per published instructions.

This unit functions exclusively as a rear load-stabilizing damper and does not increase spring rate or replace existing suspensions. Verify hardware configuration before order, as models equipped with factory electronic height control or air-spring rear axles require alternative LevelKit solutions.