The MF-TZ20 6-Speed Freewheel is a great replacement for older bikes with worn out drivetrains. With a variety of options, Shimano provides comfortable gearing for tackling the rolling hills or the flat city streets.
The MF-TZ20 6-Speed Freewheel is compatible with 6/7/8-speed chains and older hubs which accept thread-on freewheels. These are common on road bikes from the 1980's and earlier and some newer children's and dept. store bikes. This part is not compatible with modern splined freehubs which accept cassettes.
Ordered by Most Relevant First
for utility use, for instance commuting. no frills, not light, but steel. inexpensive, effective
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A guide to understanding and calculating bicycle gear inches.