Triumph 650 9-Stud Cylinder Barrel -(STD) - 70-6304 -1966-72 - TR6 / T120 1963-1982 57-3930 and 57-4200 sleeves need

57-3930 and 57-4200 sleeves need to use the later style thrust washer (57-3931 / T3931)

This ensures a better seal and a lasting longer part

top cap screws & gasket

Comes supplied with a copper crush washer

Missing your Float Needle Holder

Triumph 650 9-Stud Cylinder Barrel -(STD) - 70-6304 -1966-72 - TR6 / T120 1963-1982 57-3930 and 57-4200 sleeves needNew Late Triumph 650 Unit Twins 9 Stud Cylinder Barrel. For the unaware, it is more affordable and practical to replace your old cylinder barrel with this new one than to have it re sleeved and bored. This barrel is made in England, standard bore, and the quality and finish is exactly the same as O. E. M.. This cylinder barrel is correct for all Triumph 650 Unit Twins (Bonneville, T120R, Tiger, TR6R, Etc) from 1966 1972 only as this barrel features