If your XRAY T2, T3 is understeering, then try this optional rear anti-roll bar set. The rear anti-roll bar will decrease rear chassis roll and decrease rear traction, increasing your car’s steering. This complete rear anti-roll bar set for the XRAY T2, T3 includes all necessary hardware, and includes three different anti-roll bars: 1.2, 1.4, and 1.6mm.