Catalogue Norton Commando 750 Roadster Upswept Exhaust Pipes 1971 on Upswept exhaust pipes for Norton Commando 750 Roadster 1971 on Made in England from chromed steel tube size 1 3/8", InletĀ 1 5/8" flange OEM 06-3375, 06-3376 (reference only) N63