1999-04 Ford Mustang Maximum Motorsports Rear IRS Urethane Differential Mounts w/ Tool - New Edge by Maximum Motorsports

Mustang Maximum Motorsports Rear IRS Urethane Differential Mounts w/ Tool (99-04)

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  • Maximum Motorsports  Mustang Rear IRS Urethane Differential Mounts w/ Tool (99-04)
Mustang Maximum Motorsports  Rear IRS Urethane Differential Mounts w/ Tool (99-04)

Reduce wheel hop by installing stiffer differential mounting bushings on your 1999-04 Ford Mustang.


Everyday Low Price: $69.99

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  • Replaces Factory Rubber Bushings
  • Reduced Driveline Vibration


  • Polyurethane Construction
  • Includes Removal Tool

What's in the Box

  • IRS Differential Mount Kit
  • Removal Tool
  • All Needed Hardware
  • Installation Instructions

Product Description

Theses urethane bushings for your 1999-04 Ford Mustang are much stiffer than the original rubber, yet are still compliant enough to dampen NVH (Noise, Vibration and Harshness).

Unlike many others who offer only the front differential bushings, Maximum Motorsports took the time and effort to actually analyze the IRS system. The MM Engineering Team realized that all of the differential bushings must be replaced as a set. The complete set includes the two front bushings and the essential single rear bushing. If only the front bushings are replaced, and the original rubber rear bushing is left in place, a mismatch will be created in the stiffness of the bushing materials. The more rigid front bushings will deflect less, while the remaining rubber rear bushing will still deflect as much as ever. This in turn will increase the stress on the aluminum front mounting ears of the differential housing. The increased stress can lead to fatigue and stress cracking of the aluminum differential housing. Wheel hop will still be prevalent because the rubber rear bushing will deflect and allow the differential to flop around.

Customer Photos (2)

Product Reviews (3)

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3 reviews
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3 of 3 REVIEWS
3 of 3 REVIEWS

5 Stars   Maximum Motorsports IRS is the best.
By on 6/28/2015
Image uploaded by Jan I looked into delrin bushings and full aluminum bushings for the IRS, but those options cause gear noise and clunk and slam noises and that's not something I wanted from my street driven Cobra so I installed the urethane IRS bushings from Maximum Motorsports and the result is that my Cobra still has a nice ride and I don't have to suffer with annoying gear and clunk and slam noises. Plus, Wheel hop has been completely eliminated. Great product and as always, Late Model Restoration has the best prices and the fastest shipping!

Yes, I would recommend this item to a friend!

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5 Stars   top notch product
By on 4/22/2015
Image uploaded by Domenick c. I have a 2001 Cobra with a little over 100k miles. It was bucking and thudding every gear change and awful wheel hop. Once the MM bushings were installed, nearly all the wheel hop is gone and now letting the clutch pedal out is as it should be...without bangs and thuds. Great product.
The attached pic is of the rear diff bushing installed in the mount next to the old rear bushing. You can see where the old one is missing some of the rubber as well.

Yes, I would recommend this item to a friend!

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5 Stars   great fit
By on 3/17/2014
As always, great parts, great prices, free shipping and on time.
Thanks LateModelRestoration.com !!!!!!!

Yes, I would recommend this item to a friend!

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Vehicle Applications

Ford Mustang - 1999 (99) - 2000 (00) - 2001 (01) - 2002 (02) - 2003 (03) - 2004 (04)

About This Brand

Maximum Motorsports
Maximum Motorsports is well respected as a leading developer of suspension systems and performance parts for your Mustang or Lightning. Established in 1992, the team at MM has spent countless hours researching and developing the highest quality suspension components for 1979-Present Mustangs and 1993-Present SVT Lightnings. Maximum Motorsports has strived to produce lightweight, direct replacement suspension parts to get your vehicle handling, launching, and cornering better than ever. Shop LatemodelRestoration.com for performance panhard bars, k-members, subframe connectors, steering racks, caster/camber plates. chassis braces, control arms, roll bars, wheel spacers, and other tubular suspension parts.

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