I don't have one - but looked up the part number and which other Yamaha's used the same rear hub on Yamaha Sports Plaza's site (Portland OR) and here's what will fit:
Assemblies where 256-25311-00-00 is used
1970 XS1 - Rear Wheel
1971 XS1B - Rear Wheel
1972 XS2 - Rear Wheel
1973 TX650 - Rear Wheel
1974 TX650A - Rear Wheel Tx650a - Xs650b - C
1975 XS650B - Rear Wheel Tx650a - Xs650b - C
1976 XS650C - Rear Wheel Tx650a - Xs650b - C
1977 XS650D - Rear Wheel Xs650d - E - E006501~ - F
1978 XS650E - Rear Wheel Xs650d - E - E006501~ - F
1978 XS650E-006 - Rear Wheel Xs650d - E - E006501~ - F
1979 XS650F - Rear Wheel Xs650d - E - E006501~ - F
1979 XS650_2F - Rear Wheel
1980 XS650G - Rear Wheel
1981 XS650H - Rear Wheel
