In the stock four-link design, the rear upper control arms are trying to do two jobs at once. One is to control axle wind-up, the other is to locate the axle side to side. When pushed to the performance limit, the upper control arms don’t do either job very well. Our Torque-arm suspension system separates the functions of the suspension components—each component has only one job, and is designed to perform that one function with no compromises. The MM Torque-arm controls axle rotation much better than the upper control arms. In addition, the Panhard Bar has the sole job of locating the axle side to side, which it also does better than the upper control arms. The lower control arms primarily have the job of thrusting the car forward under acceleration. The MM Torque-arm suspension system allows complete removal of the rear upper control arms and the quad shocks. The resulting three-link design will articulate freely, even during extreme cornering, acceleration and braking.
The free-moving three-link design has so much more traction that the grip at the front of the car will now be the limiting factor (understeer). You should now raise the rear spring rate to increase the rear roll resistance, which takes some cornering load off the front. To meet your needs, Maximum Motorsports has determined the rear spring to match your front spring rate (see Spring Rate Table). These selected rear springs will give you better handling and improved ride quality with your MM Torque-arm suspension system.
When we sat down to design our Torque-arm, we listened to what our customers wanted. The three issues we heard mentioned time and again were concerns about ground clearance, exhaust clearance, and access to the differential cover. You talked, we listened! Compared to other Torque-arms, Maximum Motorsports’ has over one inch greater ground clearance, nearly one inch more exhaust clearance, and allows complete access to the differential cover.
The MM Torque-arm fits 1979-2001 Mustangs with an 8.8" axle (except for 99-01 Cobra). Use MMTA-1,3, or 5 for rectangular subframe connecots, or MMTA-2,4, or 6 for round subframe connectors. The difference is the brackets which weld to the subframe connectors.
Our Standard Torque-arm is rated for engine torque levels of 330 to 590 lb-ft, and our Heavy Duty Torque-arm is rated for engine torque levels of 475 to 900 lb-ft. These ratings depend on the differential gear ratio (see Engine Torque Table).
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Spring Rate Table
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