E8X / E9X Rear Knuckle Reinforcement Mod

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E8X / E9X generation BMW's have three single-shear type joints per side in rear suspension. After racing with these chassis for years, we have found that these joints are points of failure. It is mostly felt in drift/rally application. Say goodbye to bolts bending/breaking with our knuckle reinforcement mod! Kit includes: 2x Bent plates for toe arm pick-up points (left+right) 2x Plates for camber arm pick-up points (left+right) 2x Plates for front upper control arm pick-up points (left+right) NOTE : There are 2 different knuckle versions (weaker and OE reinforced), please see reference picture ant make sure you have same one as in the picture. Welding is required to install this kit. Show more