Sprint Dampers in the UK make one, you may have an outlet over there, I've just fitted one and had huge problems as the mounting kit had bolts of 55mm which wound through onto the cam bearings...!!!
I'm sure most folk have had a good result with them I've just got a one off problem that is dragging on & on ???
Anyway this is the way I have fitted it which is not the way I've posted on my web site (soon to be updated)
Cost me new £140 if that helps..
