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Maximum Grip Box, 1979-1993 Mustang

GB-1
Pricing: $5,854.36
Qty:

Description

The Maximum Grip Box will completely transform the way your Mustang handles. This comprehensive, customized package does everything you need to make your ride reach its full handling potential. It stiffens the chassis, upgrades both front and rear suspensions, and features adjustable components so you can tune handling characteristics however you want. The carefully matched parts in the Maximum Grip Box will turn your Mustang into a world-class performance car-you won't believe how it performs. Our customers say it's like magic!

Each Maximum Grip Box is customized to suit your needs; it's not a one-size-fits-all package. We help you choose the right parts to make your Mustang ideal for your exact situation and driving style. Whether for the street or track, a Maximum Grip Box is the obvious choice when you've got to have the best for your Mustang. This is the package used by winners in the NASA American Iron series.

Install a Maximum Grip Box and you'll enjoy...
  • Dramatically increased traction, both when cornering and in a straight line.
  • Tunable handling balance to fit your driving style.
  • Amazing cornering stability and predictability.
  • Much quicker steering response.
  • Far less brake dive.
  • Greater comfort when cornering due to reduced body roll.
  • Amazing ride quality for a street setup-firm but not harsh, as expected of a high-performance car.
  • More chassis stiffness, giving superior ride quality and handling.
  • Ideal ride height, because it's adjustable to suit your preference.

Customized for your Mustang!
While the price displayed on this page is for the most basic Maximum Grip Box, with MM you don't have to settle for a standard package. Our talented Tech Associates will help put together a custom package to fit your needs perfectly. These are just some of the available options:

  • K-members for engine swaps
  • Front control arms for competitive road racing
  • Rear control arms for street, drag racing, or road racing
  • Torque-arms for moderate or big power
  • IRS swap
  • Swaybars for any situation

See the How to Order tab and the Options tab for info about all the parts in this Maximum Grip Box, along with the choices you have to make to get the set-up you want.

We highly recommend you take advantage of our Tech Associates' skill and experience to provide recommendations for your car setup by choosing "Maximum Grip Box Setup" from the options listed on the Technical Services page. This becomes a necessity when choosing a front or rear swaybar, or if you want to retain aftermarket parts already on your car. However, we can't help unless you provide the basic info about your car that we request in the Maximum Grip Box Setup Form linked on the Technical Services page!

Befuddled? Impatient? Hopelessly lost? See the Help Me tab.

Requirements

This Maximum Grip Box is designed for Mustangs equipped with certain specific items. While the GB-1 is listed for 1979-1993 Mustangs, 1979-1986 Mustangs must be upgraded to 1987-1993 V8 Mustang specs.

All 1979-1993 Mustangs must be equipped with the following parts to accommodate a Maximum Grip Box install:
  • One of these engines: 5.0L pushrod, 302, 351W, 4.2L, 3.8L, 2.3L, 4.6L/5.4L modular, 3.8L V6, 5.0L Coyote (2011-2014), or LSX engine.
  • 8.8" rear axle assembly
  • Spindles from a 1987-1993 V8 Mustang or any 1994-2004 Mustang. We have extensive Tech info about spindles.
  • An Oil Filter Relocation Kit is required for some Ford engines with an OEM oil cooler. This includes all 4V Cobra 4.6L and some 2V GT 4.6L engines, but not the Coyote engines.

Benefits

What does the Maximum Grip Box do?
It dramatically transforms your Mustang's handling to a level far beyond what basic bolt-on parts can do. When you want your Mustang to handle well (unlike the average Mustang), you need the Maximum Grip Box. MM's Engineering Team designed it to improve the tires' grip on the pavement, which means faster and more stable cornering, which means more fun!

Features

The Maximum Grip Box includes the following parts and options. For more details and information, see the How to Order tab or use the links below to find individual product pages for the specific features of each part.

  • Front coil-over springs
  • Rear coil-over springs
  • MM struts and shocks
  • Bilstein struts and shocks (optional)
  • Koni struts and shocks (optional)
  • MM Front Coil-over kit
  • MM Rear Coil -over kit
  • MM Racing Upper Shock Mount (optional)
  • MM K-member
  • MM Front Control Arms
  • MM Torque-arm
  • MM Rear Lower Control Arms
  • MM Caster Camber Plates
  • MM Full-length Subframe Connectors
  • MM Adjustable Rear Swaybar
  • MM Bumpsteer kit
  • MM Steering Shaft
  • MM Front Swaybar Relocation Kit
  • Front swaybar bushings
  • Front Swaybar (optional)
  • MM Panhard Bar
  • MM Steering Rack Bushings
  • MM Strut Tower Brace
  • Swaybar endlinks

Fitment

Fits
1979-1993 Mustangs equipped with certain specific items.

All 1979-1993 Mustangs must be equipped with the following parts to accommodate a Maximum Grip Box install:
  • One of these engines: 5.0L pushrod, 302, 351W, 4.2L, 3.8L, 2.3L, 4.6L/5.4L modular, 3.8L V6, 5.0L Coyote (2011-2014), or LSX engine.
  • 8.8" rear axle assembly.
  • Spindles from a 1987-93 V8 Mustang, or any 1994-2004 Mustang. 1996-2004 spindles are preferred. Read our Spindle Tech.
  • An Oil Filter Relocation Kit is required for most Ford V8 engines that have an OEM oil cooler. This includes all 4V Cobra 4.6L and some 2V GT 4.6L engines, but not the Coyote engines.
1979-1982 Mustang K-member Mounts
  • These model years have a unique distance between the two holes at each rear lower frame rail mount. You will need either stock nut plates from a 1983-2004 Mustang or four nuts and thick flat washers. Minimal grinding may be necessary on a 1979-1982 Mustang's rear mount to match its wider hole spacing to the narrower spacing of the slots on the MM K-member (matches 1983-2004 Mustangs).
1979-1984 Mustang Steering Rack Mounting
  • Mustangs built from 1979 through 10/1/84 have 14mm bolts holding the steering rack to the K-member. You'll need a pair of 1985-2004 Mustang 12mm steering rack mounting bolts and nuts to attach the steering rack to the MM K-member. Caution: Some aftermarket companies sell SAE bolts for this application, but they do NOT fit. You must use the OEM-size 12mm metric hardware.
Steering Rack Notes
  • Manual rack on MM KM-1 and MMKM-1.1 requires MMST-8 Steering Rack Spacers in addition to the MMST-6 Steering Rack Bushings.
  • Flaming River power rack on MM KM-1 and MMKM-1.1 requires MMST-8 Steering Rack Spacers in addition to the MMST-6 Steering Rack Bushings.

Befuddled? Impatient? Hopelessly lost? See the Help Me tab.

We're working on FAQs for this product. If you have a question, please use our Contact Us page to email your question. We'll answer your question by return email, and also consider it for possible addition to this FAQ section.

How do I choose which springs to use?
In general:
Choose springs that provide the handling characteristics and ride quality you want from your Mustang. Here's how to determine that:

  • The front spring rate MUST be chosen in conjunction with the rear spring rate, rear spring location, and rear suspension configuration.
  • Decide on your performance goal.
  • Consider how you'll use your Mustang most of the time, and optimize it for that type of driving.
  • Consider what level of ride quality you want. Then decide what (if any) compromises you'll make to achieve your performance goal.

In general, start by selecting a front spring rate that's appropriate for your Mustang's intended use. Then pick the rear spring rate to match, taking into account the rear suspension type (4-link, torque-arm, etc.).

More specifically:
See the MM Guide to Choosing Spring Rates and Dampers.

Which MM dampers go with which springs?
  • Choose your spring rates first. That choice dictates the damper series selection.
  • See the MM Guide to Choosing Spring Rates and Dampers.

Befuddled? Impatient? Hopelessly lost? See the Help Me tab.

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