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

Bolt, Strut to Spindle, 2015 Mustang
Actual product may differ from photo.


  • Item # W715932-S439
  • Manufacturer: Ford


  • Bolt used to attach the strut to the spindle on an S550 (2015+) Mustang.
  • OEM Ford bolt designed for this specific application

Ford states these bolts are one-time use.


  • 2 bolts required per strut.
  • 4 bolts required per car.

Related products

  • Replaces your used bolt with an OEM Ford bolt.
  • OEM Ford bolt designed for this specific application.
  • OEM-level corrosion protection.


  • S550 (2015+) Mustang