Bicycle Mechanics - Brifter upgrade

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View Full Version : Brifter upgrade


mymojo
04-14-11, 08:27 PM
I have an Y2K Trek 1000 that I've been riding recently. I enjoy it very much. However, I'm not in love with the thumb shift button on the Soras. So I bid $70 on a set of 105s off of fleabay - and won! (I didnt really expect that bid to win. lol!). I know that I will need to switch to a 9 sp cassette and swap chains too. My question is will the existing Sora derailleurs be OK or do those *have* to be swapped out, too? I believe my riding level would be categorized as recreational/hobbyist.

I know some will say not to sink money into an older bike like that. And, truthfully, I plan on moving to an Allez eventually. Since I figure the 105's will move over I could justify this one upgrade.


Retro Grouch
04-14-11, 08:30 PM
The short answer to your question is that your derailleur will work.

How many rear cogs do you have now? If it's 8, that's good. If it's 7, a 9-speed cassette isn't going to fit on your freehub body.

operator
04-14-11, 09:34 PM
The short answer to your question is that your derailleur will work.

How many rear cogs do you have now? If it's 8, that's good. If it's 7, a 9-speed cassette isn't going to fit on your freehub body.

The 8 speed Sora front derailleur won't work well. In addition to the crankset/chainring spacing being incorrect.

This is not an economical upgrade.

Especially seeing how 9s stuff is completely outdated already.