Inner Tube 70/100-14 TR4 Straight Valve Stem - Fits on 70/100-14 Tire size Motorcycle Inner Tube 70/100-14 TR4 Valve Stem* TR4 Valve Stem: Centered, Straight Stem, Round Shape to fit on rims with a round valve base. Fits on 70/100-14 tire size Heavy duty durable valve stem. Unbeatable performance and value.