The Rancho 3-in. suspension system, box 1 of 3 for Ford F-150, begins a three-box kit that lifts the front about 3 inches and supports up to 35-inch tires. This package pairs upper control arms with preinstalled ball joints and RS9000XL struts for nine-position damping control while maintaining OE alignment specs; order boxes 1–3 to complete the bolt-on installation.
Rancho 14-20 Ford Pickup / F100 Suspension System Component - Box One