1955-59 Chevy Pickup Mustang II Front Suspension Kit Stock Spring

• Complete Mustang II independent front suspension kit system
• Converts your 1955-59 Chevy pickup straight axle to IFS
• Independent front suspension kit includes control arms, springs, shocks, and more
• Utilizes stronger tubular steel upper and strutless lower control arms
• Choice of eight coil spring rates with black painted non-adjustable shocks
• Available with manual or power rack-and-pinion steering systems with tie-rod ends
• Updated 11-inch disc brakes use popular GM Metric single piston calipers
• Cast iron vented rotor features standard Chevy 5x4.75-inch wheel bolt pattern
• Forged steel Mustang II spindle options include stock height or 2-inch drop height
• Typical front-end drops of up to four inches can be had with stock height spindle
• Typical front-end drops of up to six inches can be had with 2-inch drop spindle
• Includes application specific weld-in Mustang II IFS crossmember
• Welding is required

Why Convert to Mustang II Suspension?

It has been over 50 years since hot rodders stumbled across the second-generation Mustang’s independent front suspension (IFS) crossmember and its compact design that would fit easily in pre-war hot rods. The famed 1974-1978 Mustang II front end has been swapped into countless thousands of hot rods and muscle cars over the decades due to its compact size, ease of alignment, and the ability to upgrade to disc brakes and rack-and-pinion steering all at once. However, the supply of original Mustang II suspension crossmembers you would find in a salvage yard have long dried up and are often not the correct width for wider applications like trucks and muscle cars.

Thankfully, the aftermarket, including Speedway Motors, has answered enthusiast’s needs with brand new application specific weld-in crossmembers to allow enthusiasts to convert hot rods, pickups, and muscle cars over to the famed Mustang II front suspension. We make things easy for your Mustang II front suspension project by offering complete Mustang II IFS kit systems designed to work together to provide the best handling for your intended purpose and budget. We kit these Mustang II front suspension and braking components with our application specific crossmember and all the small bits that are often missed (which can create frustration and additional wait time as you must place additional parts orders), including hardware, spacers, and more.

Our 1955-59 Chevy Truck Weld-In Mustang II Crossmember Makes It Easy

Converting your ’55-’59 Chevy truck’s chassis to the Mustang II front suspension design with our crossmember kit brings you a whole different driving experience, one that will have you looking for any excuse to get out on the open road and take long trips to events you never attended before due to your Chevy truck’s poor handling at modern highway speeds. Beginning with our 7 gauge steel (that’s a full 3/16 of an inch thick) boxed Mustang 2 front suspension crossmember that is fully welded with extended vertical uprights we have designed in anti-dive geometry to our crossmember and spring towers. Suspension travel, which yields a better ride, is upwards of five inches with our IFS and aligning the IFS can be handled easily by any competent alignment shop. Rack-and-pinion steering provides a quick and crisp steering effort at any road speed, and we have designed our rack mounting tabs to not only be optimized to eliminate bump steer but lay the steering rack back at a 20 degree angle to facilitate a lower steering shaft angle. This helps with exhaust manifold/header and overall engine clearance. The mounts accept both 15-1/2-inch and 16-inch on center rack mount spacing for use with manual or power steering assemblies. Stock height Mustang II spindles will result in a typical 3-4-inch drop in ride height.

Mustang II Tubular Control Arms Provide Strength with Great Looks

The original Mustang II control arms were stamped steel units with the lower using a rear mounted strut rod for location control. While these are still an option, most enthusiasts prefer upgrading to tubular control arms. These tubular steel arms provide better handling and appearance, while eliminating the OEM lower control arm strut rod support for additional tire clearance. These control arms are made from strong 1-inch OD tubing with a .120-inch wall thickness. They are designed to use a stock-style coil spring and shock absorber. We include black painted 13.50-inch free height coil springs (available in eight spring rates to suit your vehicle’s front-end weight and ride height needs) and black painted fixed rate twin tube gas shocks. These springs will require trimming to achieve your desired ride height (which will vary by vehicle weight and options).

Spindles, Brakes, and Steering Round Out Your Mustang II IFS Kit

Our forged and heat-treated spindles provide a strong foundation for your Mustang II’s brakes, wheels, and tires versus cast spindles. The spindle is available in a stock pin height or 2-inch drop version, both of which retains factory suspension geometry and are fully machined for use with stock inner and outer wheel bearings, OEM-spec brake caliper (or caliper adapter bracket) and maintains the factory 7-degree ball joint and tie-rod end taper for true bolt on ease. These spindles work together with our 11-inch disc brake kit that features Ford Granada-style vented disc brake rotors Chevy wheel bolt pattern (5 on 4.75-inch) and GM Metric single piston calipers to create an affordable, yet effective brake system for your vehicle. We even include the brake pads and hoses to connect to your frame’s hard line.

Obviously, one of the key benefits of converting to a Mustang 2 front suspension kit is the upgrade to the precise control of rack-and-pinion steering from your old OEM frame mounted steering gear box. Rack-and-pinion steering provides better road feel, quicker turn-in, lower weight, and better packaging for engine swaps. While some prefer the simplicity of a manual rack for its bolt-in and go ability, we don’t force you to do so, as you have the option of either a manual rack or a power rack, both built with all new housing and internal components, and includes mounting bushings and outer tie-rod ends to connect your rack of choice to your spindles. We even include the necessary rack extensions for this wider Mustang II crossmember application. Simply pick up the necessary steering shafts and joints to connect the rack to your steering column.