UNO Ultralight Bike Stem 7/17 Degrees MTB Mountain Road Bicycle Stem 31.8mm 60 -130mm 6061 7050 Aluminum Alloy MTB Bicycle Parts UNO Ultralight Bike Stem 7/17 Degrees MTB Mountain Road Bicycle Stem 31.8mm 60 -130mm 6061 7050 Aluminum Alloy MTB Bicycle Parts. Sale price : $6.00 Category : Sports & Entertainment