SOLO-XD Single Speed Conversion Kit for XD HubsSOLO XD Single Speed Conversion Kit for XD XDR Hubs Revolutionize your cycling experience with the Solo XD Single Speed Conversion Kit from Wheels Manufacturing. Designed to seamlessly transform your XD XDR hubs into a powerful single speed setup, this kit offers unrivaled simplicity and precision for a ride like no other. When SRAM introduced a new freehub body that could accommodate more gears, we saw an opportunity to create the Solo XD. It's an