There are a few different options for ordering IRS kits from MM. The "Street" version uses Urethane Differential Bushings to reduce NVH concerns, as that is the area where most road noise is transmitted. The "Race" version uses Aluminum which is much more solid, but may transmit unwanted NVH concerns. It's purely an option on which kit someone prefers to use. ALL the kits use Delrin for the upper and lower control arms.
And, the "Basic" kit is just Delrin bushings for the upper and lower rear control arms, and the tools needed for the job.
Link to all 3 kits
MM IRS Grip Packages : Maximum Motorsports, the Latemodel Mustang Performance Suspension Leader!
And, the "Basic" kit is just Delrin bushings for the upper and lower rear control arms, and the tools needed for the job.
Link to all 3 kits
MM IRS Grip Packages : Maximum Motorsports, the Latemodel Mustang Performance Suspension Leader!
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