Please make sure that you follow below steps:
1/ They go on the spindle - first the large combined block of cogs, then the remaining loose cogs.
2/ The cogs should be from largest (inside) to smallest (outside). Lide the new cassette onto the hub.
3/ Then slide the two loose cogs onto the hub. Make sure the cog with the least teeth goes on last.
4/Put on the lock ring and tighten clockwise. Arrange the installation according to the size of the cogs.
- Go to youtube and type in install a bike cassette for more info.
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