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

Coil-Over Kit, Koni SA Shocks, rear, 1999-04 Mustang IRS
Actual product may differ from photo.


  • Item # MMCO-7
  • Manufacturer: Maximum Motorsports


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Mustang Rear Coil-Over conversion kit for Koni Single Adjustable shocks (IRS Cobra only). Springs not included. This same kit with springs included is purchased under our package, COP-7.

You will need to have shocks modified to remove the metal dust boot. 8041-1270S-MOD is the part number for pre-modified shocks, or you can contact our sales department to send back your existing Koni shocks for modification at no additional charge.

Fits Koni shocks:

Shocks with dust boots removed are discounted from listed price when purchased with a coil-over kit. See details on product page.

Click on the Tech Info button below for more technical information on Coil-Over kits.

Tech Info