This is a replacement XRAY XT2 Composite Rear Lower Suspension Arm (Hard).
Rear lower suspension arm made from super-tough composite material gives a perfect balance between reliability and performance; the suspension arm is rigid enough for a responsive feel and extreme durability.
The arm - molded from HARD composite - is suitable for most track conditions, especially medium- and high-traction tracks.
Universal design allows this rear arm to be used on both left and right sides