MM News

New! MM Technical Services: MM’s Engineering Team will provide setup recommendations specifically tailored for your Mustang. Get help choosing options for a Maximum Grip Box, deciding on coil-over spring rates, selecting a brake master cylinder, and advice on converting your Fox to Hydroboost.

New! Swapping a Coyote into a Fox Mustang? MM's Hydroboost Conversion Kits allow easy installation of a 1996-2004 Mustang Hydroboost power brake assist unit into a 1979-1993 Mustang.

New! Swapping an IRS into your Fox Mustang? MM makes it easier with a brake line kit made just for this conversion. Bolts-in, with no cutting or flaring of brake lines. Designed to fit standard IRS brake hoses.

New! MM now offers a tool for the giant nut securing a Mustang Hydroboost. This MM socket fits the 1-7/8" nut holding the Hydroboost to the firewall mount. Required when changing a Hydroboost unit.

New! MM's billet aluminum Pedal Box Spacer for Fox Mustangs. Replace the breakage-prone OEM plastic spacer when converting to manual brakes or Hydroboost.

Canadians! Please read the latest about ordering from Canada/shipping to Canada.

/DRIVE
We've posted the parts list and link to the video of MM's Mustang in /DRIVE Tuner car Shootout

Technical Services
Actual product may differ from photo.

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Technical Services
The MM Engineering Department provides recommendations for advanced car setup, or when a custom setup is needed for a parts combination that's outside of the typical mainstream setup. The MM Tech Associates who answer the phones and answer most emailed questions easily handle over 90% of the technical questions we receive. Questions involving unusual and very advanced setups usually require involving the MM Engineering Team, which is why we now offer Technical Services.

Credit for Tech Services
If you buy a product directly from MM within 60 days (180 days for a Maximum Grip Box) of receiving a Tech Services recommendation for that item, we'll refund a portion of the Tech Services fee with a credit toward your purchase. The credit will be either the full Tech Services amount or 10% of your order, whichever is less.

Credit for Maximum Grip Box Setup
If you buy a Maximum Grip Box directly from MM within 180 days of receiving a Tech Services recommendation for setup, we'll refund the full Tech Services fee with a credit toward your purchase.

Maximum Grip Box Setup
  1. Read the appropriate Maximum Grip Box page for your Mustang. Please read all the tabs and follow the various links to parts and tech pages. Being familiar with the parts in the Maximum Grip Box will help you collaborate with us in determining the best setup for your Mustang.
  2. Select "Maximum Grip Box Setup" from the choices above, and complete your purchase. You'll need your Web Order Number to complete the next step.
  3. Complete a Maximum Grip Box Setup Form. This form has questions about what your Mustang is equipped with and how you use it. Please answer all questions on the form completely. It's very important that you answer every question so we can make the best recommendations for your Mustang's new setup. Your Web Order Number is required to complete the form. Further instructions are on the form.
Spring Rates
  • Most people (95%) will be able to choose their own spring rates after reading our Guide to Choosing Spring Rates and Dampers.
  • If your Mustang is unique and falls into the 5% minority (this is typically a Mustang used in competition), follow these steps:
  1. Read our Guide to Choosing Spring Rates and Dampers. Doing so will help you collaborate with us in determining spring rate recommendations for your Mustang.
  2. Select "Spring Rate" from the choices above and complete your purchase. You'll need your Web Order Number to complete the next step.
  3. Complete a Spring Rate Recommendation Request Form. This form has questions about what your Mustang is equipped with and how you use it. Please answer all questions on the form completely. It's very important that you answer every question so we can calculate the correct spring rates for you. Your Web Order Number is required to complete the form. Further instructions are on the form.

Brake Master Cylinders
In a nutshell, for most brake systems used on a 1979-2004 Mustang, any master cylinder from 15/16" to 1-1/8" in size will stop your car. However, there are significant differences between them in the amount of pedal effort required and how much pedal travel each causes.

  1. For our recommendation for a master cylinder to use with the modified brake system on your 1979-2004 Mustang, select "Master Cylinder" from the choices above and complete your purchase. You'll need your Web Order Number to complete the next step.
  2. Complete a Brake Master Cylinder Recommendation Request Form. This form has questions about what your Mustang is equipped with and how you use it. Please answer all questions on the form completely. It's very important that you answer every question so we can make the best recommendations for a master cylinder for your Mustang. Your Web Order Number is required to complete the form. Further instructions are on the form.

Fox Hydroboost Conversion
A Ford Hydroboost swapped into a Fox Mustang works well with several different standard brake setups. But for those with lees popular brake setups, and those who've pieced together brake parts from several different Ford models or aftermarket suppliers, it's not so easy to confirm suitability for use with a Hydroboost. The MM Engineering Team can analyze your brake system for compatibility with a Mustang Hydroboost unit.

  1. Read the product pages for both MM Hydroboost conversion kits, MMBAK-19 and MMBAK-20, to see if your brake system is listed.
  2. Select "Fox Hydroboost Conversion" from the choices above and complete your purchase. You'll need your Web Order Number to complete the next step.
  3. Complete a Fox Hydroboost Conversion Recommendation Request form. This form has questions about what brakes your Mustang is equipped with. Please answer all questions on the form completely. It's very important that you answer every question so we can make the best recommendations for for your Mustang. Your Web Order Number is required to complete the form. Further instructions are on the form.

Why are you now charging for your excellent, expert tech support? It used to be free.

You pay to get opinions and advice from the other professionals in your life, and we're no different. MM Tech Support is renowned across the industry for our staff's in-depth knowledge and ability to guide you to setting up the car of your dreams (or at least the best you can afford). It costs us a lot of money to provide our famous tech help, and you won't find this quality anywhere else. The good news is that we've made MM Tech Support quite reasonable to access!

We still offer free support related to products and installation, including confirming applications, to our customers who order directly from us. The new fee-based tech support is related to car setup, i.e., the customization and personalization of what to use/do for your specific situation. This currently applies to configuring a Maximum Grip Box, recommending spring rates, and selecting a master cylinder; select the appropriate choice from those listed above.

Meanwhile, we're happy to help set up your car with parts you purchase from our dealers, or even our competitors! From the choices listed above just select "Specialized" engineering services, quantity of one hour.