Question 1

What is the difference between MM Sport and MM Race dampers?

Accepted Answer

MM Sport dampers are designed for dual-purpose Mustangs that see aggressive street driving and occasional open tracking. They are valved for coil-over spring rates that are stiffer than stock but softer than race setups. MM Race dampers are valved solely for optimum performance with high spring rates and are not recommended for street use.

Question 2

Why do I need a Panhard Bar?

Accepted Answer

The stock 1979-2004 Mustang 4-link suspension allows the rear axle to shift side-to-side by up to 2 inches, causing 'rear-steer' and instability. An MM Panhard bar precisely controls lateral axle location, eliminating unpredictable handling and making the car safer and easier to drive.

Question 3

How does a Torque-Arm improve my Mustang?

Accepted Answer

A Torque-Arm replaces the upper control arms to control axle rotation during acceleration and braking. By separating this function from lateral location (handled by a Panhard bar), it eliminates suspension bind. This results in better straight-line traction, improved corner-exit acceleration, and superb predictability.

Question 4

Do I need subframe connectors for a Torque-Arm?

Accepted Answer

Yes. Your Mustang must have suitable (welded-in) subframe connectors installed before installing an MM torque-arm. The torque-arm's front crossmember attaches directly to them.

Question 5

Should I change my springs when installing a Torque-Arm?

Accepted Answer

Yes, but usually only the rear springs. To take full advantage of the improved rear grip, the rear spring rate should be increased. There is typically no need to change front springs solely because of a torque-arm installation.

Question 6

Why does MM use solid steering rack bushings?

Accepted Answer

Rubber and urethane bushings allow the rack to move sideways before the tires move, causing vague steering. Solid aluminum bushings eliminate this movement for instant response. MM's unique spherical design also prevents the 'binding' and chatter often associated with other solid bushings.

Question 7

Why convert to manual brakes?

Accepted Answer

Manual brakes offer consistent pedal feel and modulation that vacuum-assist systems can't match, especially on cars with big cams (low vacuum) or forced induction. It also clears space in the engine bay for engine swaps (like the 4.6L).

Question 8

What makes the MM Manual Brake kit different?

Accepted Answer

Our kit corrects the mechanical pedal ratio. We don't just remove the booster; we provide a new pedal arm designed for manual leverage, a stiffer pushrod to eliminate flex, and an adjustable pedal stop. This prevents the excessive pedal effort usually associated with manual swaps.

Question 9

Can I install a Big Brake Kit on a Fox Body (79-93)?

Accepted Answer

Yes, but you must install SN95 spindles first. You will also need specific brake hoses or adapters, and we strongly recommend upgrading the rear brakes to discs (Cobra size preferably) to maintain proper brake bias.

Question 10

Do I need larger wheels for Big Brake Kits?

Accepted Answer

Yes. Most 13-inch brake kits require 17-inch wheels with adequate spoke clearance (usually 50mm). 14-inch kits generally require 18-inch wheels.

Question 11

Why use a multiple disc clutch?

Accepted Answer

The main reason is to reduce the Moment of Inertia (MOI). A smaller diameter multi-disc clutch requires less power to spin up, allowing quicker acceleration and faster shifting. It also holds significantly more torque than a single disc without making the pedal feel heavy.

Question 12

What is Moment of Inertia (MOI) and why does it matter?

Accepted Answer

MOI is the resistance of a rotating object to change speed. A low MOI clutch allows the engine to rev faster and decelerate quicker for better corner entry. It frees up horsepower that was previously wasted just trying to spin the heavy stock clutch.

Question 13

How does the MM Steering Shaft improve performance?

Accepted Answer

The stock shaft has a rubber rag joint that flexes, causing vague steering. The MM shaft uses race-quality needle-bearing U-joints for zero play. Unlike other aftermarket shafts, ours uses welded joints (no set screws to loosen!) and a collapsible center section for safety.

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