This is an optional XRAY XB2 Right Rear Suspension Arm (Graphite).
Rear lower RIGHT suspension arm made from specially-formulated graphite composite mixture, perfect for high-traction conditions. The graphite arms make the car more stable and give increased cornering speed.
Intelligent arm design allows for variable positioning of the rear shocks. Depending on track conditions, the rear shocks can be installed either in front of or behind the rear shock tower, and the rear shock tower can be placed either in front of or behind the bulkhead.
Must be used with XRA363122-G graphite lower left arm.