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.

/DRIVE
We've posted the parts list and link to the video of MM's Mustang in /DRIVE Tuner car Shootout

Coil-Over Kit with Springs, Bilstein Shocks, rear, 1999-04 Mustang IRS
Actual product may differ from photo.

$456.94

  • Item # COP-4
  • Manufacturer: Maximum Motorsports
 

 

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Rear Coil-Over conversion kit for Bilstein shocks (IRS Cobra only). This kit comes with Hypercoil 2.25" diameter linear rate coil-over springs in your choice of spring rate. Consult your MM sales department for help choosing spring rates for your particular car and performance driving habits. This kit can be purchased without springs as a MMCO-4.

Fits Bilstein and MM valved shocks:

If you have Ford OEM 2003-04 Cobra Bilstein shocks (already grooved) and wish to use them with your coil-over kit, you still will need a MMSM-10 kit to properly complete your installation. See the product page for details about the differences.

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

Tech Info