Alta Bicycle Tire Duro 20″ x 2.125″ Comp 3 Thread Bike Tire, Multiple Colors Review November 25, 2018 Wahooligan No Comments Bike Tires and Tubes This fits your . Make sure this fits by entering your model number. Duro Brand Rated @ 40 PSI. Sold Each Does not Include Tube or Rim, Only Tire Comp 3 Thread Post navigation ← STI Heavy Duty Tube (80/100-21) ReviewMaxxis Minion DHF Wide Trail 3C/Double Down/TR Tire – 27.5in Review →