This product is New – Triumph unit 650 exhaust adapter collar UK Made adapters spigot 1963 1964 1965 1966 1967 1968 1969 1970 1971 to 1972
You are bidding on stock screw in head adapters / exhaust manifolds for your 1 3/4″ exhaust. Made In England. These are brand new and will fit unit 6501963 1964 1965 1966 1967 1968 1969 1970 1971 to 1972engine that has threads for head exhaust.
The threads are larger so they fit better tighter if you head is worn out.
They measure 1.67″ OD, and 1.43 ID, the threads are 16 tpi
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