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.

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

Coil-Over Spring Clearance Tool
Actual product may differ from photo.


  • Item # MMT-9
  • Manufacturer: Maximum Motorsports


Larger Image
Tool used to easily modify an interference point on the Mustang unibody to improve clearance for a front coil-over spring.

What is this tool used for?
There is a protruding flange surrounding a hole on the unibody of all 1979-04 Mustangs. The flange is under the driver side front strut tower, and can contact a coil-over spring, causing noise. Modifying the flange for clearance is extremely difficult without this tool (that is why we invented it).

Do I need to use this tool on my Mustang?
Yes, if you have:
  • A 1994-04 Mustang with a front coil-over conversion
  • A 1979-93 Mustang with SN95 front control arms, and a front coil-over conversion