QA1 73-79 Ford F100 / 75-79 F150 SWB Rear Suspension Conversion System - Single Adj. 200lb/in

QA1 rear coil-over conversion kit for 73-79 F-100 short wheelbase trucks. Includes single adjustable shocks, 200 lb. high travel springs, and all hardware. QA1's unique torque arm design maximizes performance without the inherent binding issues of other systems, all while achieving a 4" to 7" drop. This bolt-in system also offers incomparable adjustability: the watts link, torque arm, trailing arms, bracket mounts, and shocks are all adjustable. Single-adjustable shocks are perfect for street-driven trucks that see occasional time on the track. With a simple turn of the adjustment knob, you can cruise with a super soft setting, or dial up the valving for more aggressive handling for those twisty backroads. With registration, your shocks can be backed with a best-in-class Limited Lifetime Warranty. Keep your rear end housing center in the truck with QA1's unique watts link design. This compact system keeps your tires from rubbing the sides of your bed, while providing clearance for rear exiting exhaust systems. Adjustable lower trailing arms allow you to dial in your wheel base for the perfect wheel and tire fitment inside your wheel well. Parts come powder coated and ready to install with all necessary hardware. You can bolt up the kit right in your garage or work with your local shop. Made in the USA. Fitment Notes: This system only fits short wheel base trucks. Designed to use stock '73-'79 F100/F150 9" axle with iron 3rd member and direct fit aftermarket 9" axles with iron 3rd member. Aluminum 3rd member will NOT work.

• QA1 uniquely engineered to enhance the performance of your vehicle
• Adjustable shock valving options for all driving styles
• Ride height adjustability
• Best-in-class warranty
• Easy bolt-in install
• Made in the USA

Upgrade the rear suspension of your short wheelbase Ford truck with the QA1 qapR121-200 rear coil-over conversion system. Designed for 1973-1979 Ford F-100 and 1975-1979 F-150 short wheelbase trucks, this bolt-in kit includes single-adjustable shocks, 200 lb. high-travel coil-over springs, adjustable suspension components, and installation hardware. The system is engineered to improve handling, ride control, and suspension adjustability while supporting a lowered stance from 4 to 7 inches.
QA1's unique torque arm design enhances rear suspension performance while reducing the binding concerns associated with other systems. The adjustable watts link helps keep the rear axle housing centered and provides additional clearance for the tires and rear-exit exhaust systems. Adjustable lower trailing arms allow precise wheelbase tuning for improved wheel and tire fitment, while adjustable bracket mounts, torque arm, trailing arms, watts link, and shocks provide extensive setup flexibility for street and occasional track use.
The single-adjustable shocks make it easy to tailor the ride for different driving conditions. Use a softer setting for comfortable cruising or increase the valving for more controlled handling on winding roads and performance driving routes. Components are powder coated and ready to install, allowing the system to be bolted in at home or installed by a professional shop. With registration, the shocks are supported by QA1's Limited Lifetime Warranty. Made in the USA.
Fitment Notes: This QA1 rear suspension conversion system fits short wheelbase trucks only. It is designed for use with the stock 1973-1979 Ford F-100/F-150 9-inch axle featuring an iron third member, as well as direct-fit aftermarket 9-inch axles with an iron third member. Aluminum third members are not compatible. Professional installation and proper suspension alignment are recommended.

Features:

• Application: Rear coil-over conversion system for 1973-1979 Ford F-100 and 1975-1979 Ford F-150 short wheelbase trucks

• Shock Type: Single-adjustable shocks for street driving and occasional track use

• Springs: 200 lb. high-travel coil-over springs

• Ride Height: Adjustable 4 to 7 inch drop

• Suspension Design: QA1 torque arm and watts link design help reduce binding and maintain rear axle alignment

• Adjustability: Adjustable watts link, torque arm, trailing arms, bracket mounts, and shocks

• Installation: Bolt-in design with powder-coated components and required hardware

• Axle Compatibility: Works with stock and direct-fit aftermarket 9-inch axles using an iron third member

• Warranty: Limited Lifetime Warranty available for registered shocks

• Manufacturing: Made in the USA

Fitment:
Ford F-100 Base 1973
Ford F-100 Base 1974
Ford F-100 Base 1976
Ford F-100 Base 1977
Ford F-100 Base 1978
Ford F-100 Custom 1975
Ford F-100 Custom 1976
Ford F-100 Custom 1977
Ford F-100 Custom 1978
Ford F-100 Custom 1979
Ford F-100 Northland 1975
Ford F-100 Northland 1976
Ford F-100 Northland 1977
Ford F-100 Northland 1978
Ford F-100 Ranger 1975
Ford F-100 Ranger 1976
Ford F-100 Ranger 1977
Ford F-100 Ranger 1978
Ford F-100 Ranger 1979
Ford F-100 Ranger Lariat 1978
Ford F-100 Ranger Lariat 1979
Ford F-100 Ranger XLT 1975
Ford F-100 Ranger XLT 1976
Ford F-100 Ranger XLT 1977
Ford F-100 Ranger XLT 1978
Ford F-100 Ranger XLT 1979
Ford F-100 XLT 1977