The GKTech F8X M2/M3/M4, G8X M3/M4The GKTECH adjustable camber shims replace the OEM eccentric bolts that are prone to slipping under hard driving conditions and ensures that your wheel alignment stays where it was set. - Sold as a set of 4x shims and 2x grade 12.9 nuts and bolts - Durable stainless steel shim with CNC machined contour to match the OEM knuckle - Shim design allows for arm length adjustment of 0mm, or a fixed /- 3.25mm resulting in camber options of a fixed /- 0.85deg (or 0) from OEM alignment. Vehicle Compatibility: - BMW F80 M3 / M3 Competition - BMW F82 / F83 M4 / M4 Competition - BMW F87 M2 / M2 Competition - BMW G80 M3 / M3 Competition - BMW G82 M4 / M4 Competition