The IRS got a bad rap from wheel-hoppers and people who expect ANY stock rear to handle 15+ 4krpm launches at the track.

All it takes is a couple bad wheel hopes on a SRA, which wheel hop too BTW, contrary to what so many people claim.

If you are at all disapointed in your ride quality, you are going to be the happiest camper when you have installed the IRS. It's such a dramatic change from the SRA.