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

Racing Rear Upper Shock Mount, Koni, 1979-04
Actual product may differ from photo.


  • Item # MMSM-5
  • Manufacturer: Maximum Motorsports


MM Racing Rear Upper Shock Mount fits Koni SA and DA shocks, both solid-axle and IRS equipped 1979-2004 Mustang

Securely mounts your shock top with a spherical bearing. Eliminates the vertical deflection of any rubber, and the spherical bearing's freedom of movement eliminates side loading on the shock shaft. This helps the shock perform at it's peak. Our mount performs the same as a rod end on the end of the shock, but does not reduce precious bump travel because of trying to fit a rod end under the shock tower. These can be used with or without a coil-over system. Because there is increased noise transmitted into the passenger compartment, and installation of the shock mount is not easily reversible, this product is recommended only for race cars.