Millway | Rear Main Suspension Arm – BMW M2, M3, M4 F8x & G8x | Adjustable CamberMain suspension arm for the rear suspension on M2 M3 M4 F8X G8X. This product requires the use of rear coilover dampers. Using offset rear dampers is not advised. Sold as a pair with bolts and offset camber shims, providing 4 different camber positions. Alternatively, use the included eccentric screws to adjust camber. The eccentric screws are conveniently located in the inner position for easier camber adjustment with the wheels on.