IRS looking likely for 2014/15 Mustang..

[Hmbre97]

How come with the 03/04 cobras when you put in the stiffer bushings the wheel hop pretty much goes away? Not saying you are wrong, just asking if you'd expand a little.

Well, when things start shaking, the factory bushings in the whole IRS have a good bit of give so it just amplifies the vibrations.

I have all delrin and alum bushings in the IRS in my Mach but it will still wheel hop under the right conditions (mainly if the road is damp or with shitty hard compound street tires). It doesn't totally get rid of it, it just removes all the factory rubber shit that makes the issue worse.

That's why a soft sidewall tire like a slick helps as it can absorb some of the shock. IIRC, there was a company talking about coming out with halfshafts that use a u-joint and diff sized shafts but that was a couple years ago and I haven't been too active on the tech side of stuff lately.