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  1. #1
    Junior Member
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    need new crankset trek y3.

    I have an old trek Y3. It still has all the stock drive train on it and I want/need to upgrade the bottom bracket and crankset. I want to use outboard bearings. It is an 8 speed. Can I use a 9 speed crankset with my 8 speed chain? Will the derailluer change gears normally?

  2. #2
    sch
    sch is offline
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    Outboard bearings should be no problem. 8spd chain compatibility with 9spd CW is very good,
    the cassette slightly less so but acceptable. Der should also function normally. Main ? is how
    much chain wear there is. If chain wear is more than 1/16", get a new 9spd chain, $20-25
    well spent.

  3. #3
    Junior Member
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    thank you, I ordered a 9 speed chain with the crankset.

  4. #4
    Great State of Varmint Panthers007's Avatar
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    You will likely need to adjust the rear-derailleur for the change, but that's easy. I hope you have the proper tools to do the installation - or can borrow same. And you'll be needing a torque-wrench.
    How do you keep an idiot in suspense?

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