FAQs & Tech Tips

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

Stock-location springs
MM offers stock-location spring sets, along with sets from H&R and Eibach. All match well with MM dampers, as outlined in the tables below. MM and H&R springs are also available as front pairs and rear pairs.

How do I choose a stock-location spring set?

  1. In the tables below, look at the "Typical Use" column to find the most accurate description of your situation. See the center column for our recommendation of spring sets that will work well for you.
  2. Read about the springs that interest you on the Spring Product Pages.

OK, I chose my springs. Now which dampers do I need?

  • Look again in the table below for the spring set you chose, listed in the center column.
  • The right-hand column will tell you the best dampers for your chosen spring set.
  • Some listed springs match with more than one typical use and strut series. For a Mustang primarily driven on the street, choose the softer series strut (for example, the Street series rather than the Sport series). For a Mustang that's frequently autocrossed or open-tracked, choose the stiffer series strut listed for that same spring (for example, the Sport series rather than the Street series).

 

1979-2004 Mustang with solid rear axle
Typical Use Use this spring Use this MM damper series
Street driven: stock Stock Springs Street
Street driven: extreme lowering
(1.75" or more)
H&R Super Sport
Eibach SportLine
Street
Street driven: moderate lowering
(1.5" or less)
H&R Sport
Eibach Pro-Kit
Street
Street driven: performance MM Road & Track
H&R Race
Street
High-performance street driven
Autocross
Open-tracking
MM Road & Track
H&R Race
H&R Super Race
Sport
Open-tracking H&R Super Race Race MM2/RA2

 

1979-2004 Mustang with Cobra IRS
Typical Use Use this spring Use this MM damper series
front/rear
Street driven: stock Stock Springs MM Street/Bilstein HD
Street driven:
lowered and performance
H&R Race
Eibach Pro-Kit
MM Street/Bilstein HD
High-performance street driven
Autocross
Open-tracking
H&R Race MM Sport
Race MM2

 

If you still need assistance choosing a stock-location spring set for your Mustang, please contact us.