TKR6705E Shock Piston Set (51.1, 51.2, flat/flat, 13mm, 4pcs) Vehicle Compatibility TKR6705E - Shock Piston Set (5x1.1, 5x1.2, flat/flat, 13mm, 4pcs) is included with the ET410.2, MT410 2.0, SCT410 2.0 and SCT410SL kits and can be used as a replacement part for those vehicles. This can be used with the EB410, EB410.2 and ET410 vehicles and should be a direct replacement for the stock part or used as a new feature. Please use the instruction manual for the kit(s) listed to verify compatibility and no additional items are necessary before purchasing.