Billet aluminum inserts filling the gaps in the 4 factory rear subframe mounts and limiting vertical movement, to preserve suspension geometry through corners on Audi B8/B8.5 and Porsche Macan 95B.
Kit of 8 precision-machined stainless steel front subframe positioning collars and 4 new bolts, eliminating subframe slippage and positioning it precisely. Installation in approx. 1 hour. NVH: none to low.