52621-D400Front Coilover System, 65-79 F100, Double Adjustable, 400lb/in. Springs, 5-7in. Drop

QA1’s coilover conversion system for 1965-1979 F100 trucks, whether bump side or dent side, is designed to replace factory suspension components with a modern solution. This system is narrower than a typical Crown Vic swap, allowing for better handling and fitment of larger wheels and tires. The setup saves 150 lbs off the front end and provides adjustable ride height range of 5" to 7" with included drop spindles.

HANDLING & PERFORMANCE

QA1’s coilover conversion system delivers superior handling for your F100, featuring a front-end design that is 3.75" narrower than the common Crown Vic swap. This narrower width allows for the fitment of wider wheels and tires, improving handling and cornering stability while giving your truck a modern, aggressive stance. In addition, the system lowers the front-end weight by 150 lbs, making your truck more responsive and nimble.

MODERN STEERING 

The included rack and pinion system greatly enhances steering precision and responsiveness, delivering a modern driving experience with improved driver feedback and control.

ADJUSTABLE FOR YOUR PERFECT STANCE

Achieve the drop you want with ease. The system provides 5" to 7" of drop with the included drop spindles. Paired with QA1’s double adjustable coilover shocks and high-travel springs, you can fine-tune your truck’s stance and ride quality to suit both daily driving and performance needs.

EVERYTHING YOU NEED, ALL INCLUDED

The kit comes with all of the major components to complete the install with tubular upper and lower control arms, upper and lower crossmembers, rack and pinion steering, and drop spindles. With hardware included, the system is designed to bolt in seamlessly.

MODULAR ENGINE MOUNTS

This system offers a range of bolt-in engine mounts tailored to your specific build. Sold separately, you can choose from FE, Windsor, Mod/Coyote, or LS-based engine mounts.

QUALITY BUILT IN THE USA

QA1’s F100 Kits are proudly manufactured in Lakeville, Minnesota.

BEST-IN-CLASS WARRANTY

QA1 Adjustable Shocks are eligible for a Limited Lifetime Warranty. For peace of mind, simply register your shocks at QA1.net/Warranty to ensure coverage for as long as you own your vehicle. 

FEATURES AND BENEFITS

• Complete Coil-Over Conversion: Includes everything needed, from control arms to hardware, for a seamless installation.
• Optimized Handling: 3.75" narrower than Crown Vic swaps for improved handling and fitment of wider wheels and tires.
• Rack and Pinion Steering: Delivers a modern driving experience
• Significant Weight Savings: Reduces front-end weight by 150 lbs, improving overall performance.
• Adjustable Ride Height: Provides 5" to 7" with drop with included drop spindles.
• Made in the USA: Proudly built in QA1’s Lakeville, Minnesota.

FITMENT NOTES 

• Spindles are from a '79-'81 Camaro; front brakes need to match 
• Requires trimming of inner fenders; an easy-to-use template is included.
• Borgeson ¾-36 x ¾ DD connection (Part # 013449) or similar recommended at the steering rack as a starting point.
• Some engine/header combinations may require up to three steering U-joints.
• Requires custom routing of power steering lines and adapter fittings.
• The steering rack included with this suspension is based on a Fox Body Mustang, with a 9/16"-18 pressure port and 5/8"-18 return.
• Adapter fittings should be used to convert the rack to -6 AN, and custom -6 AN hoses will be required.
• The Saginaw PS pump is a common OE pump option. For the 5/8" inverted flare on the pressure side, use Summit Racing p/n 961947ERL to convert to -6 AN.