Sora 9 Speed to 105 10

chatlow
chatlow Posts: 848
edited October 2015 in Workshop
Looking to replace my Sora 3500 9 speed double shifters with 105 10 speed double. I get that I will have to change chain and rear mech, but would I also have to change the RD as well?

Comments

  • nicklouse
    nicklouse Posts: 50,675
    Looking to replace my Sora 3500 9 speed double shifters with 105 10 speed double. I get that I will have to change chain and rear mech, but would I also have to change the RD as well?
    mech can be reused. dont forget the cassette.
    "Do not follow where the path may lead, Go instead where there is no path, and Leave a Trail."
    Parktools :?:SheldonBrown
  • keef66
    keef66 Posts: 13,123
    It's only when you go up to 11 speed that the buggers changed the geometry / pull ratio of the rear mech.

    So as Nicklouse says, all good with 10 speed shifters / chain / cassette.

    And remember to fit the thin metal spacer behind a 10 speed 105 cassette.
  • chatlow
    chatlow Posts: 848
    Sorry, my mistake.. I meant to say that I understand that I will need to replace 9 speed chain and cassette, but will I need to replace sora RD for 105 or will it be ok. It's been answered already so thanks guys :-)