Outlaw Racing OR2858 Motorcycle Standard Inner Tube 3.50x16 Inch Rear Tire You are buying one Outlaw Racing Rear Standard Inner Tire Tube 3.50 x 16 Inch. Standard inner tube is a blend of natural & butyl rubber, meets or exceeds most all OEM tube specifications Resists punctures and pinch flats Designed for motocross, enduro and woods riding Also Fits: 3.50-16", 80/90-16, 80/100-16.