The Spacer X adapter allows CatEye's Rapid X and X3 series lights to be securely mounted on any CatEye FlexTight style bracket. It includes a smaller rubber band to keep the light firmly in place. With the Spacer X adapter, the Rapid X series is compatible with CatEye's FlexTight™ brackets, rear rack bracket, saddle rail and Fi'zi:k saddle brackets.
