Maximum Grip Box for 1999-2004 Mustang Cobra
Maximum Grip Box for 1999-2004 Mustang Cobra
Part # GB-10
YOU WILL NEED TO CONTACT US WITH YOU OPTIONS. VIA EMAIL OR GIVE US A CALL!!!!!!!!!!!!!!!!!
Options 1:
Customizing your Maximum Grip Box means choosing the best combination of parts for your Mustang from the available options. Listed here are the options for each part in the Maximum Grip Box. You may be able to choose the most suitable part after reading through the descriptions in this section, but if you need help, knowing the available options makes your conversation with an MM Tech Associate go more smoothly. Just take it step by step, and all will become clear. Options appear in order of importance. Follow the links to the individual product pages and make note of your choices and questions.
Befuddled? Impatient? Hopelessly lost? See the Help Me tab.
Getting started
The heart of your Mustang's high-performance handling is the combination of springs and dampers. Spring rates should always be chosen first, before dampers, to suit your desired combination of performance and ride quality. In other words, the choice of spring rates guides the damper choice.
Springs
Front and rear coil-over springs are available in a wide range of spring rates. While an MM Tech Associate can help you choose, please read the coil-over section of our Guide to Choosing Spring Rates and Dampers first. The goal is to choose a front spring rate that's at the intersection point of optimum handling and ride quality. Your preferred mix of handling and ride quality, and the choice of front spring rate to achieve that, is the single most important decision to make.
TIP: If a soft front coil-over spring is most suitable for you, a stock-location rear spring will be a better match than a rear coil-over setup. An MM Tech Associate can match the rear spring to your front coil-over spring rate. Choice of rear spring type (stock location or coil-overs) will affect other parts choices.
Dampers Once you pick spring rates, the damper choice becomes easier. MM 3rd-Generation struts are available in 4 different series, with each matching a specific range of spring rates. This is detailed in our handy Guide to Choosing Spring Rates and Dampers.
Damper choices
Coil-over Conversion
The dampers you choose affect the model of the coil-over conversion kits required. MM kits fit specific struts and shocks; we don't make an ill-fitting universal kit like the others. Choosing your dampers narrows down the choice of coil-over conversion kits:
Front coil-over kits: Choose the one that matches your chosen strut.
Rear coil-over kits: Choose the one that matches your chosen shock. Then decide if you want the standard upper coil-over mount or the MM Racing Upper Shock Mount. Note: the Racing Upper Shock Mount may require a specific rear coil-over kit.
Good work! Now go to the Options 2 tab.
Options 2:
K-member
Choose one of the 3 MM K-members available:
MMKM-2 fits 1996-2004 Mustangs with engine type: 4.6L/5.4L modular, 3.8L V6, 5.0L Coyote (2011-2014), or LSX engine.
MMKM-1.1 fits 1996-2004 Mustangs with an engine swap: 5.0L pushrod, 302, 351W, 4.2L, 3.8L, 2.3L.
MMKM-3 fits 1996-2004 Mustangs with a 4.6L modular engine and a Hellion turbo kit.
Note: An Oil Filter Relocation Kit is required for most applications with an OEM oil cooler. This includes all 4V Cobra 4.6L engines, but not the Coyote engines.
Front Control Arms
Choose one of the many different MM Front Control Arms available.
First decision
Choose the offset. This refers to the fore-aft location of the ball joint relative to a stock front control arm:
Non-Offset: When installed with an MM K-member, this option moves the front wheels forward by 3/4". Used to provide increased caster and slightly improved weight distribution.
Forward-Offset: When installed with an MM K-member, this option moves the front wheels forward by 1.5". Used to provide significantly increased caster and move the center of gravity rearward. This option has a small potential for some tire interference (depends on tire size and wheel offset), but can be accommodated with minimal modifications that do not affect the exterior paint.
Drag Race: We omit the front swaybar endlink mount to reduce weight. This option is non-offset. See Non-Offset description above.
Second decision
Choose the pivot bushing material:
Urethane offers excellent performance and slightly less NVH than Delrin bushings.
Delrin is recommended for track-driven Mustangs due to much-increased longevity over urethane, along with reduced friction.
Making those 2 decisions will lead you to one of the control arms listed on these pages:
Befuddled? Impatient? Hopelessly lost? See the Help Me tab.
You're almost done! Now go to the Options 3 Tab.
Options 3:
Caster Camber Plates
Front coil-overs require steel caster camber plates with spherical bearings. Your Mustang's chassis year determines which MM Caster Camber Plates you'll need. Choose the main plate finish: either black powdercoating or chrome plating.
Subframe Connectors
Choose the finish of theMM Full-length Subframe Connectors:
Bare steel (you paint)
Black powdercoating
Bumpsteer Kit
No choice to make here; the MM K-members require a bolt-through style bumpsteer kit.
Steering Shaft
Choose the shaft that matches your steering rack:
Front Swaybar Relocation Kit
The MM SN95 chassis Front Swaybar Relocation Kit (MMFSB-51) is required in all cases. The swaybar relocation kit requires universal front swaybar bushings.
Befuddled? Impatient? Hopelessly lost? See the Help Me tab.
Front Swaybar Bushings
MM Front Control Arms require the MMFSB-51 Front Swaybar Relocation Kit, which in turn requires universal front swaybar bushings. Select the correct bushing size for your swaybar diameter.
Front Swaybar
While not included as standard in the Maximum Grip Box because the stock front swaybar is suitable for most uses, we can add a front swaybar to the package if you want. If so, we highly recommend you get help from our setup engineer with choosing a front swaybar. To do so, select Maximum Grip Box Setup from the options listed on the Technical Services page. Remember, we can't help unless you provide the basic info about your car that's requested in the Maximum Grip Box Setup Form linked on the Technical Services page!
Adjustable Rear Swaybar
Whether or not to use the Eibach Adjustable Rear Swaybar for the IRS usually requires consultation to determine which front swaybar will be the best match for it. We highly recommend you get help from our setup engineer. To do so, select "Maximum Grip Box Setup" from the options listed on the Technical Services page. Remember, we can't help unless you provide the basic info about your car that's requested in the Maximum Grip Box Setup Form linked on the Technical Services page!
Steering Rack Bushings
No choices to make here; the MM K-member requires using MM's Aluminum Steering Rack Bushings (MMST-6). These let you install the steering rack higher or lower than stock.
Just one more set of decisions! Go to the Options 4 tab.
Options 4:
Strut Tower Brace
Choose the appropriate MM Strut Tower Brace from the three available for 1999-2004 Cobras. Note that aftermarket parts such as superchargers and cold air kits may interfere with a strut tower brace and prevent installation.
Swaybar Endlinks
For standard front swaybars, the MM K-member requires endlinks that are shorter than stock.
MM Parts for the Cobra IRS
Choosing parts for the IRS is relatively easy, compared to the many choices that must be made for a solid-axle suspension. We simply start with our Rear Grip Package for the IRS, MMRG-21.5. There is only one part in that package that you might consider changing for another, the differential mounts. Standard, and what we recommend for all Cobras except actual race cars, are urethane differential mounts. For race cars we recommend MM Aluminum Differential Mounts; not recommended for street-driven Mustangs because the aluminum transmits gear noise into the cabin.
The basic IRS parts list:
Aluminum Differential Mounts (optional)
Recommended
There are items we highly recommend installing while the IRS is being upgraded. These items are beneficial, and installing them while installing the rest of the IRS parts will provide a significant labor savings compared to installing them at a later date.
Cross-Axis Joint Replacement Kit if any of the OEM joints are loose, or your Mustang has high mileage.
Ford Racing IRS differential cover has drain and fill plugs to allow easy servicing of the differential fluid, unlike the stock cover.
Bumpsteer Gauge. Used to measure and adjust bumpsteer. Proper bumpsteer adjustment of the IRS is even more critical to proper car setup than is front adjustment. Correcting the IRS bumpsteer makes the difference between an ill-handling Mustang and one with superb handling; it really is that critical.
Popular additions:
That's it! That's the last decision to make. Now place your order, either by clicking the Add to Cart button and then writing your list of part numbers in the Comments field on the checkout page, or by calling us. When phoning, please have your written list of parts (and any questions) in hand.
Befuddled? Impatient? Hopelessly lost? See the Help Me tab.