ALL NEW TR 307 and TR 309 Enduro wheels provide improved rider control, traction and outright speed. The asymetric rim profile for more equal spoke tensions and a robust reliable wheel build. These wheelsets feature Reynolds PR3 rim design for umatched ride quality and durability at a lower price point. The new low profile wide channel rim for increased cornering speed, direct power transfer and improved complience. These wheels include the New Reynolds/Ringle SRX MTN hub with improved durability and performance, 100% CNC machined with 12° engagement.