MM News

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 now offers an adjustable front swaybar for SN95 Mustangs. Currently in stock and ready to ship.

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

14mm hardware kit for IRS subframe & RLCA mounting, 1999-04
Actual product may differ from photo.


  • Item # MMF-4
  • Manufacturer: Ford
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14mm hardware kit to mount IRS subframe, or solid-axle Rear Lower Control Arms, to 1999-04 Mustang chassis.
  • OEM hardware
  • OEM anti-corrosion coating
  • OEM designed flange-headed bolts and nuts
  • Proper OEM size: Metric, not a "pretty-close" English-size. Use metric tools for installation.
  • 1 kit required for one IRS-equipped 1999-04 Mustang, for the forward subframe-to-chassis attachment.
  • Use MMF-1 hardware kit for the rearward IRS-to-chassis attachment.
  • 2 kits required for one solid axle equipped 1999-04 Mustang, to secure each end of both rear lower control arms.
  • Not for 1979-98 chassis. Use MMF-5 for those 12mm applications.
  • 2 flange-headed bolts, 14mm
  • 2 flange-headed nuts, 14mm