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Part for sale is NOS (New Old Stock).
It has not been opened, it has not been used.You won\'t find another one, these are very rare.
It is an aftermarket Caliper Drive chain Tensioner made by Cancilla Motorcycle Engineering.
This does not come with any mounting hardware, that is missing from the package.I am not sure exactly what years this fits, but it shows the early right side chain model. So I think it fits 1981 and 1982 ATC250R only.