MM News

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

Turnology drives their S550 after they installed the latest MM Starter Box. Read about the Starter Box and their test drive report.

New! MM Starter Box for S550 Mustangs. Includes Koni dampers, MM Caster Camber Plates, choice of Eibach or H&R springs, and Eibach swaybars.

Hydroboost Socket
Actual product may differ from photo.
  • Hydroboost Socket
  • Hydroboost Socket

click on thumbnail to zoom


  • Item # MMT-12


MM-manufactured socket fits the giant nut that holds the Ford Mustang Hydroboost unit to the firewall mount. This is the tool you need to remove and reinstall that 1-7/8" nut.

Required to secure the Hydroboost retaining nut to MM's Fox Mustang Hydroboost swap kit's firewall block.

Included with MM's Fox Mustang Hydroboost Swap Kits.

Fits 1996-2004 Ford Mustang Hydroboost 1-7/8" retaining nut.

  • Much less expensive than the Ford factory tool
  • Fits the aluminum firewall block included in MM's Fox Hydroboost swap kits. The factory tool will not fit the MM firewall block because of its overly large body diameter.
  • 1996-2004 Ford Mustang Hydroboost retaining nut (1-7/8")
  • Stock 1996-2004 Mustang Hydroboost mounting plate
  • Aluminum firewall block included in MM's Fox Hydroboost swap kits
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.