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Thanks for the info all. I have the 3400 series Sora shifters, with the thumb button downshift. That was what I was trying to get away from. The new Sora are lever actuated so might be my best option short of switching to 2x10 or 2x11 and whole groupset swap. Not the route I wanted to take, costs/benefit push towards new bike range there, was trying to ...


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If it were me, part of any upgrade would involve addressing the question of future-proofing the bike, for example so that parts going forward are easier to obtain. I'm afraid that, in your case, this means I would be looking at going beyond 9-speed. You mention 105/Ultegra and Dura Ace - well, these are all now 11-speed setups so straight away you're ...


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All newer 105/Ultegra/Dura-Ace are 11 speed, so they would not be compatible with your 9 speed derailleur. I believe you'll have to find some old ST-5500 levers if you want 9 speed 105. The current generation is 5800, so that's 3 generations old. I agree with @Batman, that it probably makes sense to go with current generation 9 speed shifters. Even the ...


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Current 105/Ultegra/Dura-ace are more than 9 speed, so you can't use them. Plus, the old 105 or tiagra 9 speed shifters you'll get are probably the same as the current Sora shifters anyway, due to trickle down technology (just with tiny modifications and a price premium). So, in short, if you're sticking with 9 speed, don't bother -- you'll just pay more ...


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You actually guessed the only thing that you really need to watch out for: the BB shell width. And you don't even necessarily need that until you're actually putting it all together. Almost all BB shells are 68 or 73 mm. Most of the external BB's come built for a 73 mm shell and include a spacer for a 68 mm shell. The odds are really really good that the ...


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Note that spindle length is independant of the frame, and depends only on the crankset. This makes the shimano external bearing system is easy to install since the cups work with any standard BB shell width, and the spindle is integral to the right crank of the crankset (i.e. no worries about 113/117.5/123mm etc... spindles as you would have to consider for ...


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Your only economically viable option is to get a new 6-speed rear cluster that has a wider range. Adding gears onto the front that bike is going to be almost expensive enough that it's probably not really worth doing. And adding more gears to the rear is effectively impossible. That's an overstatement, but it's waaay more money and work than you want to get ...


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To upgrade the rear: you will get a wider wheel, therefor you are going to wider your rear fork too. I don't know if you have 8 cogs freewheels in your LBS, so it can be, that to put 8 gears, you will have to replace the wheel to get a free hub & cassette system. For 7 gears you will not have to replace chain, while for 8 you will have to. Anyway, those ...



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