If you want to upgrade your bicycle with a more modern drivetrain, like 2x9, 1x10 or 1x11, there is a chance, that you won't have to replace the rear wheel or the hub itself. In some cases replacing a Shimano 7 speed freehub body to 11 speed will be a quick solution. You might need to use a longer axle too.

The tool you'll need:
cone wrenches [ Ссылка ]
10 mm Allen key [ Ссылка ]
pretty good toolkits (optional) [ Ссылка ]

0:00 two wheels
0:18 our task
0:37 removing the axle
2:15 freehub body removal
3:07 all parts for 7s
4:02 all parts for 9s
4:19 installing new freehub
4:55 all measurements
6:15 QUESTION

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