FAQs & Tech Tips

MM News

NASA Racers! MM will support NASA road racers with $1,000 contingency prizes for the American Iron, American Iron Extreme, and Spec Iron at the 2019 National Champions. You must register to be eligible.

New! Read the article Maximum Motorsports Tames Fox & SN95 Mustang Rear Suspensions on FordMuscle.com.

MRT Exhaust! MM now offers premium MRT cat-back exhaust systems for 1996-2004 Mustangs.

New! for Street & Strip Mustangs! Big-bore rear wheel cylinders for 1979-1993 Mustang with 9" drum brakes. Improves braking when running big rear tires and front skinnies, and/or different OEM front brakes.

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'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

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.