Reserve Wheels Reserve 30 HD AL Wheelset - 29" 20 x 110 DH Boost/12 x 157 6-Bolt XD Aluminum DT350Reserve Wheels Reserve 30 HD AL Wheelset 29" 20 x 110 DH Boost 12 x 157 6 Bolt XD Aluminum DT350. Your wheels are arguably the most important component on your mountain bike which is why Reserve developed an all new line of do it all aluminum wheels. Reserve aluminum wheels have been designed and developed to provide a product that rivals the performance of the much loved carbon wheels but at a much more accessible price point. And with an industry