Tire Tubes with Right Angle Stems


Street Tracker
I just bought a set of ContiRoad Attack 2's for my Thruxton in stock sizes. These are radial tires, while I know that you can use any good tube in a radial tire I would prefer to get a radial tube with a rt angle stem. Does anyone know of a natural radial tube with a rt angle in the correct sizes? The last set were a 3.50/4.00-18 and a 4.00/4.50-17.