Front IRS Subframe Mounting Bolt Kit One pair of Grade 8, 9/16" bolts with nylock nuts and flat washers for the front subframe mounts. 99-04 Mustang CobraLearn More

Full Tilt Boogie IRS Differential Hardware Set - Front diff, rear mount to cover, rear diff to subframe (1999-2004 SVT Cobra) - FT-1325Learn More

Included in this kit are 2 Delrin rear differential bushings and one anodized inner sleeve.

Stabilize the differential by removing the OEM rear differential rubber bushing and replacing it with this kit.

Stabilizing the differential will prevent diff cover leakage and in high torque situations, diff cover and halfshaft breakage.

Be sure to replace both the front and rear differential mounts at the same time.

This kit is included in our FT 5000 complete IRS bushing kit.

Fits Mustang Cobra
1999, 2000 (R), 2001, 2003, 2004Learn More

Stabilize the differential by removing the OEM front differential rubber bushings and replace them with this kit.

Stabilizing the differential will prevent diff cover leakage and in high torque situations, diff cover and halfshaft breakage.

Be sure to replace both the front and rear differential mounts at the same time.

Fits Mustang Cobra
1999, 2000(R), 2001, 2003, 2004Learn More

Replacing the stock rubber swaybar bushings with firmer urethane will improve your IRS-equipped car's handling by precisely locating the rear swaybar. Fits All stock Mustang Cobra IRS swaybars, 1999-2004 Details Rubber bushings may allow the swaybar to move up and down relative to the chassis because, rather than just allowing the swaybar to pivot, the rubber can also compress. When the swaybar compresses the pivot bushings instead of purely rotating, the swaybar does not provide the same roll resistance at all times, and the car's handling will not be consistent or predictable. Rubber bushings can suffer significant deterioration after only a few short years. Urethane bushings will restore an older car's handling to better than new. These 26mm bushings fit the stock Ford IRS rear swaybar and its mounting brackets on the 1999-04 Cobra models. Note: These bushings were recently revised. They now properly fit all 1999-04 Cobra models.

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Maximum Motorsports 99-04 Cobra IRS Subframe Front Mounting Nut

It has been found that Ford had put the incorrect bolt in the front mounting holes for retaining the IRS subframe on some 2003-4 Cobras. The sleeve in the bushing and hole in the chassis are designed for a 14mm diameter bolt, however many cars had 12mm bolts installed incorrectly from the factory. If you have been noticing noise from the rear suspension, it may be caused by the subframe shifting due to insufficent retention with the smaller bolts. Verify your bolt size installed through the front IRS subframe mounts before ordering. You will need two bolts and two nuts to do both sides.Learn More

Front IRS Subframe Mounting Bolt Kit One pair of Grade 8, 9/16" bolts with nylock nuts and flat washers for the front subframe mounts. 99-04 Mustang CobraLearn More

OEM IRS Bushing removal/installation tool set.Learn More