5T 6T T110 TR6 T120. 5T TR5 T100 6T T110 TR6 T120. CRANKCASE INNER SCREW. TRIUMPH CRANKCASE INNER. All pre unit models 1938 to 1962. TRIUMPH PRE UNIT. GENUINE TRIUMPH. As a rule we try and source our spares from British manufacturers if at all possible and aim to provide a choice between genuine parts and good quality pattern parts.
