Schwinn Bike Tube 20″ x 4.25″ Stingray OCC Bike Bicycle Rear Tire Inner Tube Chopper Review Posted on December 24, 2018 By DuskunkTagged Cycling, Outdoor Recreation, Schwinn, Sports & Outdoors, Tubes This fits your . Make sure this fits by entering your model number. One Brand New Schwinn Sting Ray Rear Tube 20×4.25 For bicycle or lowrider bike use only