The best replacement for freewheel is cassette.

The best alternatives to freewheel are rated as following:
★★★★★  cassette
★★★★  fixed gear
★★★  fixed
★★  freecoaster
★★  cog
★★  cassette bmx
★★  cassette hub
★★  freehub
★  coaster brake
★  cassette better
★  fixed cog
  coaster
  cassette wheel
  cassette bicycle
  free hub

Your alternative for freewheel is not listed? Suggest!
Speaking about freewheel, one probably shouldn't forget about fixed hub.

Other search terms related to freewheel and their ratings are:
★★★★★ fixed hub
★★★★ lockring
★★ flip flop hub
★★ 1/8 chain
★ coaster brake
You have in mind a companion for freewheel and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of freewheel in all years. Click on graph for more.
freewheel
cassette
fixed gear