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I have a Cannondale M300 with a 7-speed drivetrain. The parts are fairly worn and I am considering converting to a 9-speed as 7-speed components are getting harder to find.

What parts do I need to consider to replace the drive-train?

futura
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2 Answers2

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Without knowing the specifics of your setup, you may need to replace:

  • Chain
  • Front Shifter
  • Rear Derailleur
  • Cassette Hub
  • Cassette

You may also have to change your dropout spacing, and may need to re-dish the wheel to maintain proper alignment.

dlu
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M. Converse
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Been a long time since I did my 7 - 9 conversion but I believe I needed:

  1. new cassette
  2. shifter for rear
  3. new cassette mount thing (not the hub but I'm blanking on the name)

You may also need a new front shifter since a 9 speed chain is thinner but I managed to make both front and rear work just fine. I squeezed the front one down a bit to make it a bit narrower. Been using mine for 7 years or so now.

curtismchale
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