Hi guys, i am on the look-out for a rear antiroll bar for me b5 avant quattro, either a genuine rs4 one(the thicker one!) or an aftermarket one. I did upgrade the springs and shocks with an Eibach Pro Kit and genuine Sachs heavy duty sports shorter springs all round but, the car is a bit twitchy since fitting the 'roll bar. I had rear end steeping out a few times and i tell you it isn't funny ! Previously i had the car lowered on PI springs and while lowered 30mm the ride was a bit too hard.