WTB XC21 TCS 29er Mountain Bike Gravel Rear Wheel 32h Shimano XT Hub 6 Bolt QR Ships within United States Buy Online or Click & Collect Share Loading Facebook Like button... WTB XC21 TCS 29er Mountain Bike Gravel Rear Wheel 32h Shimano XT Hub 6 Bolt QR Ships within United States Buy Online or Click & Collect Share Loading Facebook Like button...