TC7.1 FT Suspension Arm Shims 0.2mm TC7.1 Suspension Arm Shims, 0.2 mm Tuning option to allow finer increment adjustments for roll center. Sold in pairs to allow 2 shims under each arm mount for TC7. Includes qty 4 of 0.2mm outer shims and qty 8 of 0.2mm inner shims. This item fits the following: TC6.2 TC7 TC7.1 TC7.2