Speedo Drive (15:12 Ratio, 3/4″ Hole), 1697-70 BSA A75 Rocket III, 1966-70 Triumph T120/TR6R, 1968-70 Triumph T150, Reproduction Made in Taiwan, EMGO #58-83953.

(ALT# 19-9217, BG5330/168, 99-9994)