Gearbox sprocket 19 Tooth, Norton singles. Suits models 1, 16H, 18, 19, 20, ES2, CS1, 30 from 1933 to 1949. As an alternative you can use Norton AMC sprocket [ R-SPRND19T (MA-I54) ] and sprocket spacer [ BT-OF-040131UPR ] for upright gearbox. Original Norton part number: 9712; A2/368 - Axle sprocket
