QA1 Chrysler 8-3/4in. & Ford 9in. Axle Housings 70-74 Mopar E-Body - Rear Suspension

Mopar 70-74 E-Body, Single Adjustable, 12-170, 8-3/4 Convert your classic Dodge Challenger and Plymouth Barracuda from leaf spring rear suspension to a QA1 coil-over kit that uses a triangulated 4 link design. This is the best way to gain a more planted feel, make room for larger wheels and tires and correct the wheelbase of classic Mopars. The kit allows you to run a 3" bumper exit exhaust. This modern design instantly delivers a more modern driving experience on the street while giving you the adjustability to maximize performance at the autocross, road course and drag strip. QA1 Mopar rear suspension systems come complete with powder-coated tubular components-including the cross member, upper trailing arms and lower trailing arms-and all installation necessary hardware. Kits work with popular rear axles including Mopar 8 3/4", Ford 9" and Dana 60 rear ends. Choose the appropriate part number when selecting your kit. Each system includes your choice of single-adjustable, double-adjustable or MOD Series shocks. All of the coil-over options give you the ability to fine tune ride and handling characteristics. You can also easily adjust the ride height to achieve the look and performance you want. QA1 coil-over rear suspension systems can be paired with an optional QA1 sway bar to further enhance handling characteristics and prevent body roll during hard launches. QA1 systems are made in the USA. Single- and double-adjustable shocks are eligible for an industry-leading Limited Lifetime Warranty. Fitment notes: Installation requires a small amount of cutting and welding on the frame and axle housing. This kit works with factory-located leaf spring mounts or modified inboard-located leaf spring mounts. Single-adjustable shocks are recommended for cars used primarily on the street. Double-adjustable coil-overs are recommended for cars that will consistently be used for drag racing, autocross or road racing. MOD Series shocks are recommended for drivers who want maximum performance out of their vehicle.

• 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 1970–1974 Dodge Challenger or Plymouth Barracuda with the QA1 R155-175 rear coil-over suspension system. Designed for Mopar E-Body applications using Chrysler 8-3/4-inch or Ford 9-inch axle housings, this system replaces the factory leaf spring arrangement with a triangulated four-link design. The result is a more planted driving feel, improved suspension geometry, greater wheel and tire clearance, and the ability to correct wheelbase alignment on classic Mopar vehicles.
This QA1 system includes powder-coated tubular components, including the crossmember, upper trailing arms, lower trailing arms, single-adjustable coil-over shocks, and required installation hardware. Ride height can be adjusted to achieve the desired stance while shock valving can be tuned for improved ride and handling characteristics. The system also allows space for a 3-inch bumper-exit exhaust and can be paired with an optional QA1 sway bar to help reduce body roll during hard launches and spirited driving.
Installation requires a small amount of cutting and welding to the frame and axle housing. The kit is compatible with factory-positioned leaf spring mounts or modified inboard leaf spring mounts. Single-adjustable shocks are recommended for vehicles driven primarily on the street, while QA1 double-adjustable and MOD Series options are available for customers seeking additional tuning capability for drag racing, autocross, or road racing. QA1 suspension systems are engineered and made in the USA, and the included single-adjustable shocks are eligible for QA1's limited lifetime warranty.

• Triangulated four-link rear suspension design for improved handling and traction


• Single-adjustable QA1 coil-over shocks for street-focused tuning


• Adjustable ride height for customized stance and performance


• Powder-coated tubular crossmember and trailing arms


• Compatible with Chrysler 8-3/4-inch and Ford 9-inch axle housings


• Allows use of a 3-inch bumper-exit exhaust


• Made in the USA

Features:

• Triangulated four-link design improves rear suspension control, traction, and stability

• Single-adjustable coil-over shocks provide tunable performance for street-driven vehicles

• Adjustable ride height supports customized appearance and handling

• Powder-coated tubular crossmember and trailing arms provide strength and durability

• Fits 1970–1974 Dodge Challenger and Plymouth Barracuda E-Body applications

• Designed for Chrysler 8-3/4-inch and Ford 9-inch axle housings

• Compatible with factory-positioned or modified inboard leaf spring mounts

• Allows clearance for a 3-inch bumper-exit exhaust

• Made in the USA

Fitment:
Dodge Challenger Base 1970
Dodge Challenger Base 1971
Dodge Challenger Base 1972
Dodge Challenger Base 1973
Dodge Challenger Base 1974
Dodge Challenger R/T 1970
Dodge Challenger R/T 1971
Dodge Challenger Rallye 1972
Dodge Challenger T/A 1970
Plymouth Barracuda Base 1970
Plymouth Barracuda Base 1971
Plymouth Barracuda Base 1972
Plymouth Barracuda Base 1973
Plymouth Barracuda Base 1974
Plymouth Barracuda Gran Coupe 1970
Plymouth Barracuda Gran Coupe 1971