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Discussion Starter #1
I bought the S1 and it doesn't fit.

My frame is the Cannondale Flash 4 2011.

(Below pictured with it's stock X7.)

Cheers!

 

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513 Posts
Make sure you also get the right FD per your chain wheel.
ie 39T or 42T
 

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there is also a spacer kit kp123. you don't require the spacer but there is a chain guard/plate in this kit which is excellent, well worth putting on too.
 

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Thanks.

It's a Shimano crank, XTR M980, 38/26T, 175mm, 2012 model.

So I believe 39T is the correct, right?
I think so, but not 100% sure.:)
As far as I know, there are only 2 FD variations in regard to front chain wheels teeth count.
42-28 & 39-26 (each variation has an S1 and S3 option)
The one for the 42-28 will not work properly.
The 39-26 should work pretty good.

see here
SRAM XX Front Derailleur (Direct-mount, Bottom-pull) - Mike's Bikes - Road and Mountain Bike Shop, components, parts, accessories, service and repair
 

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Thingamejigger
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The one that Stumpy has linked I agree is the best one for the bike. I am sticking with the X7 one for the moment as I just bought new FSA carbon bars, so perhaps next month I will change but the front shift on my bike is perfect at the moment.
 
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