[TrpDSgt]

How do I tell if the XT derailleur that I have is a long cage or a medium cage? There are no markings that I can find to tell. Thanks.


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[411898]

Look at pics of XT RDs sold on eBay to compared cage lengths to see what you've got.

 

[matto6]

One option is to measure the distance between the pulley axles. I believe the gs (medium) is 80 mm? (might be remembering wrong)

Another thing I've observed is that if the triangle cutout at the very end of the derailleur goes all the way through then its the long cage. The short cage has the cutout on the outer piece only. The shimano parts diagram for m786 derailleurs confirms this. I'm not sure if it applies to older versions though.

Long:
https://media1.roseversand.de/product/1850/1/8/1859467_1.jpg

Short:
https://www.bikewagonmedia.com/media/img/jb/26677.jpg

 

[Slash5]

My SLX long measures 100mm, SG medium 80mm between the jockey wheel bolts.