IRS Polyurethane Subframe Bushing Kit
Thank you for purchasing Maximum Motorsports’ Polyurethane IRS Subframe Bushing Kit. This kit is intended for use on the 1999-2004Cobra IRS subframe. The polyurethane bushings in this kit are considerably less compliant than the stock rubber IRS subframe bushings. These stiffer bushings virtually eliminate displacement of the IRS subframe relative to the chassis, thus improving stability and predictability of the car during acceleration, braking and cornering. The polyurethane still provides very good noise isolation. 1979-98 cars fitted with IRS require MMIRSU-2 bushing kit.
Note: MM has developed a Bushing Removal Tool (MMT-6) to aid in the fast removal of the stock rubber IRS subframe bushings. Not only does this tool reduce the time spent on this job by at least an hour, it also makes bushing re- moval much easier.
Note: Installation of this kit requires 6 jackstands, a floor jack, a hand drill, and an assortment of common hand tools.
1. Block the front wheels of the car.
2. Raise the rear of the car with a jack and support the rear of the car on a pair of jackstands. This first pair of jackstands MUST be positioned under the chassis of the car (e.g., under aftermarket subframe connectors or under the torque boxes), not under the IRS subframe.
3. Remove the rear wheels.
4. Remove the cat-back exhaust system.
5. Position the jack under the differential and raise the jack until it just contacts the differential. Do not lift the rear of the car off the jackstands.
6. Position a second set of jackstands 3 inches under the main rear tube of the IRS subframe. The main rear tube of the IRS subframe is located just forward of the gas tank.
7. Remove the two rear 12mm IRS subframe mounting bolts.
8. Slowly lower the rear of the IRS subframe onto the second pair of jackstands.
Get pdf IRS Polyurethane Subframe Bushing Kit
