Custuning rear trailing arm is made by 6061 T6 aluminum alloy. It tightens up the rear chassis structure and upgrades the rear multi-link of your Model 3 and Model Y.Rear Trailing ArmCar ModelSelectQuantityAdd to CartBuy NowMaterial6061 T6 aluminum alloy and S45C carbon steel Product InfoEach set includes 2 rear trailing arms. Packed DimensionMetric: 50×17×11 cm/set; Imperial: 19.7×6.7×4.5 inch/set Packed Weight3 Kg/set