When you want the best rear suspension for your early Falcon, you go with the MOD 2 rear from MMI. Found under cars like MMI’s Ol’ Blue, Vaughn Gitten Jr.’s 70 Fastback, and even the 69 Anvil Mustang from The Fast & Furious 6, this suspension is built to win. So much so, that we had Falcon guys asking when it was going to arrive for their cars. Well, the wait it over.

Originally designed to cruise on the street then destroy at the track, this suspension has seen years of refinement and development. Comprised of several components, this kit most notably moves the coilover from under the body up into the trunk using a cantilever-type setup more typically found on Formula 1 cars. Not only is this generally badass, but it allows us to run a full size coilover without worrying about packaging it under the car.

We’ve also designed this package to be minimally invasive, requiring only a small amount of cutting (a couple inches) to your trunk floor and the boxing of about an inch of your rear frame rails on either side. Try that with any of those other kits on the market.

In short, this kit offers classic Falcon owners an incredibly balanced, strong, tune-able system that’s as comfortable on the street as it is on the track. We’ve installed this kit in countless cars and made several refinements over the years and it continues to be a defining suspension for us at MMI.

This built-to-order kit will be crafted to your desired specifications and needs. Please allow additional time for creation and shipping. Following your order, we will be in touch to confirm your specifics and details. 

MOD 2 Rear Suspension Kit Includes:

• MOD Rocker Cradle System with tune-able pushrods
• JRi Coilovers (available in non-adjustible, single, double, or double with remote reservoir)
• 9″ full floating rear end housing with solid 31 spline axles
• MOD Panhard Rod Kit with MOD adjustable rear sway bar
• MOD Subframe connectors
• MOD Torque Arm with built in pinion angle adjustment
• Adjustable lower control arm mounts
• Adjustable lower control arms

MOD Rocker Cradle System with Tune-able Pushrods & JRi Shocks

The rocker cradle is the beating heart of our MOD 2 rear system. In trying to design a best-in-class rear suspension for an early Mustang we kept running into a problem: how do you fit a full-size coilover under the rear of the car while keeping ride height low? We didn’t want to compromise on the coilover size – that’s what delivers awesome ride quality around town, while also allowing us to get aggressive at the track. We wanted to be able to go over a set of railroad tracks with a coffee in our hand. Our solution came from the race car world. By attaching the rear housing to a pair of pushrods, then cantilevering them to our best-in-the-game JRi shocks mounted horizontally in the trunk, we were able to accomplish our goal all while creating a truly kickass looking system. Even better, the adjustable pushrods and trunk mounted coilovers give us easy access to dial in the rear suspension to a preferred feel or driving mode.

Ford 9″ Full Floating Housing with MOD Additions and Solid 31 Spline Axles

We needed a rear end setup that wouldn’t quit. Something we could beat on all day then drive home on. So we turned to an old favorite, the Ford 9″. But this isn’t your average 9″. Instead we opted to go with full floating axles for increased safety, strength, and easy repair. Your Speedway Engineering housing will come with the necessary tabs, brackets, caliper brackets, and brake lines holders already welded on. Though this kit does not include a differential, we’d recommend one of those available from GearFX.

MOD Panhard Rod Kit with Adjustable Rear Sway Bar

The Falcon Panhard Rod and Adjustable Rear Sway Bar helps lock down the lateral movement of the rear end, and allows for the driver to feel exactly when the rear of the car wants to break loose. Plus it gives us a way to adjust roll center in a package that’s easily tuned and installed, without having to resort to a full Watts link.

By including an adjustable rear sway bar, we’re getting the ability to further dial in the feel that we’re looking for. Adjusting the bar allows for finite tweaks to rear body roll and overall grip. The panhard rod gives you the ability to further tune the rear roll center. This effectively allows for raising and lowering rear end grip when hard cornering.

MOD Torque Arm with Adjustable Pinion Angle and MOD Subframe Connectors

Starting with a set of our MOD Falcon subframe connectors, we include a crossmember that acts as the front point for the torque arm setup. This beefy part keeps the rear end tied into the car, full improving the strength and feel. We connect the torque arm to the front of the rear diff with a plate and adjustable rods that allow you to dial in the exact driveline angle you’re after.

Brakes are not included with this kit, though we can pair a Wilwood kit with it. 

Please note: these kits are made to order and per your specifications. Upon order we will contact you to confirm details and provide you an estimate build time. Shipping costs will be added to your order upon completion.

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Our Falcon MOD 1 Coilover Kit Includes:

• Our Tubular Upper A-Frame Arms with MOD Shaft Kit
• JRi-MOD coilover shocks with characteristics tuned by MMI
• Hyperco springs
• Billet aluminum shock top mounts
• Hardware kit

Valving Options

The MOD1 STREET coilover package has a stripped down non-adjustable JRi shock. The valving in the shock is tailored toward a touring ride – responsive with a tight compliance to handle the bumps with control. This system best fits the person who wants to get in and drive. This shock package is completely upgradeable to a multi adjustable shock system in the future.

The MOD1 SPORT coilover assembly has a single-adjustable JRi shock which is set up to adjust rebound. The single adjustable shock allows us to be more aggressive. The valving allows the car to handle like a slot car for unsurpassed control while having the ability to back off the dampening quickly to get back a refined drive for the trip home from the track. This shock package is upgradeable to a double adjustable shock in the future.

The MOD1 RACE coilover assembly features a double adjustable JRi shock. This is the shock package used on Mike and Brianne’s Ol Blue 1966 Mustang. The double adjustable JRi shock system allows the driver to independently tune low speed rebound vs. high speed rebound. This lets us tune the small inputs of the steering wheel to get the response desired while tuning the larger bumps out of the equation. The double adjustable JRi shock package is the most advanced shock system you can buy to refine your Mustang to the level you demand.

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By including an adjustable rear sway bar, we’re getting the ability to further dial in the feel that we’re looking for. Adjusting the bar allows for finite tweaks to rear body roll and overall grip. The panhard rod gives you the ability to further tune the rear roll center. This effectively allows for raising and lowering rear end grip when hard cornering. Pair this with a set of our leaf springs and a good shock, and you have an awesome, affordable setup that installs easily and performs excellently.

This kit includes

• MOD Panhard Rod Assembly
• MOD Rear Sway Bar
• MOD Leaf Spring Plates

MOD Panhard Rod & Sway Bar Kit features:

• Vertical adjustment on both chassis and axle brackets for tuning
• Unique leaf spring plate design with panhard rod mount and sway bar mount
• Weld in chassis bracket
• Bolt in axle bracket with shock mount
• Sheetmetal drivers side spring plate with shock & sway bar mount
• Urethane sway bar bushings
• Turnbuckles for sway bar adjustment
• Adjustable sway bar for ultimate tune ability

Don’t panhard rods move the axle side to side and isn’t that bad?

Yes, the shorter the panhard rod is, the more the axle is thrust side to side. This is why we make our panhard rods 35” long. The misalignment is roughly 1/8”. Considering the flex of the tire and the previous 2” movement, it becomes a non-issue.

Why did you choose to do a panhard rod vs. a Watts link?

Watts links are wonderful but we took into consideration multiple aspects when deciding on the panhard rods, including price, function, installation, exhaust, roll center height and tuning ability. When installing a Watts, it is difficult to mount it low enough. The lower the lateral controls device (Watts of panhard rod), the lower the roll center. The lower the roll center, the more the car can lean on the outer spring driving the tire into the ground. Manufacturing a Watts link also is a lot more costly. This does not help the budget for the rest of the car.

Chassis tuning is also a little simpler with the panhard rod. To raise and lower the roll center (panhard rod or Watts pivot) dictates how much leverage the chassis has on the outer springs. However, when raising and lowering the roll center, you want to keep the arms level. If the panhard rod or Watts arms are not level, they can input a jacking force into the chassis (not always the best thing). This can free up or tighten up the car upon steering input. The panhard rod is the easiest to keep level when adjusting.

Running exhaust is also easier with the panhard rod assembly. Making our lives easy is an important part of having a good time with our cars.

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The original Falcons utilized a unibody construction. Rather than relying on full length frame rails as you might see under many other cars of the era, the Falcon relied on the floor pan and other body structures to connect frame rails located at the front and back of the car. Originally this reduced weight and cost, but time and questionable repairs often leave the Falcon with less than desirable chassis strength.

Chassis stiffness is important for two primary reasons:

1. It improved torsional rigidity, aka the resistance to twisting. Keeping the car flat through corners or when under stress is essential for a repeatable feel and quicker times.
2. It allows the suspension to do it’s job. If the car is twisting and bending (even over small bumps in the road) the chassis isn’t supporting the suspension, it becomes part of the suspension. Stiffening the chassis allows the suspension to work and do it’s job of handling the bumps.

This kit includes

1. MOD Subframe connectors – designed to connect the front and rear frame rails, these solid connectors weld on in more than two locations, exponentially improving their effectiveness. They also serve as handy jacking points to prevent further damage to the frame rails.
2. MOD X-Brace – Our X-Brace ties the subframe connectors together, further improving stiffness. We designed the X-brace to be removable for servicing of exhaust and other under car pieces.
3. MOD Shock Tower Brace – The shock tower brace kit is simple in design yet very effective. Triangulating the shock towers to the firewall with rigid mounts give unsurpassed strength compared to other brands.

Adding this kit to your ride will greatly enhance the feel and handling reliability of the car, giving you a better platform to build from. We install this set on nearly every car we work on and consider it nearly essential when adding more power to a classic Falcon.

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