Click to expand Tap to zoom XB4 2021 Composite Long Rear Lower Suspension Arm (Right/Hard) by Xray Save $-16.00 $16.00 | / SKU XY363113-H 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Add to cart This is an Standard XRAY Hard Composite Long Rear Right Lower Suspension Arm, intended for use with the XB4 2021 Spec 1/10 Electric Off-Road Buggy Kit. This part is harder than the soft part and ideal for hot and dry conditions.