Cush drives are called "cush" for a reason. Not saying these won't hold up better but whatever you sacrifice in "cush" you make up in issues with your wheel hub or transmission. Factories spend countless thousands in research to come up with the right combo of shock absorbtion AND durability.
Having said that, I'd still like a set for my turbo, 'cause it only does roll-ons.
I think the "factory engineering" for stiffness pretty much goes out the window with lowering, gearing, removing clutch cams, exhausts, notrous, turbos, and drag racing in general.
I was going to order a set of stockers for mine on Monday, but now I will deffinately hold out for these. I was thinking about the need for higher durometer rubber the other day. I am pretty sure Rick will want a set for his turbo bike stock wheel, as well as Bart for his nitrous bike...
So that makes one deffinate and two more that will be deffinate when I tell them they need them
John