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Old 05-13-09, 03:32 PM   #1
mcoomer
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What the heck is the difference???

Can someone tell me the difference between these XTR rear derailleurs? RD-M972-GS and SGS. I can see that they're different in pictures but features make them different. I can't seem to find the answer on the Shimano site.

Thanks,
Mike
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Old 05-13-09, 03:43 PM   #2
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one is the short cage (gs) and the other is long cage (sgs)
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Old 05-13-09, 03:46 PM   #3
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Someone correct me if I'm wrong, please-

The difference is in the jockey cage length. Also specified in teeth capacity.

GS is mid length. SGS is the long cage version, which wraps more chain - needed if when you have a wide gear range like 22/34/44 front and 11/34 rear
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Old 05-13-09, 03:53 PM   #4
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i think the diff is cage lenght, the gs has a lower "capacity" than the sgs, the sgs looks like the long cage version,


edit: ^lol i got double beaten to it
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Old 05-13-09, 04:12 PM   #5
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SS = Super Sport (short cage)

GS = Gran Sport (mid cage)

SGS = Super Gran Sport (long cage)
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Old 05-13-09, 05:54 PM   #6
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Total capacity RD-M972:
GS = 33 (enough for [22/32]x[11-34])
SGS = 45 (enough for [22/32/44]x[11-34])
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Old 05-13-09, 06:00 PM   #7
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Quote:
Originally Posted by Svr View Post
SS = Super Sport (short cage)
It will still fit in the trunk of your '67 Chevelle.

Quote:
Originally Posted by Svr View Post
GS = Gran Sport (mid cage)
It'll still fit in the trunk of your Uncle's Buick.

Quote:
Originally Posted by Svr View Post
SGS = Super Gran Sport (long cage)
Fold the back seat down Grandpa's Vista Cruiser.
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Old 05-13-09, 08:20 PM   #8
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^^^

LOL, Doug!

Still lust for a SS396.

My mom had a '66 Nova , plain stock, bench seat, auto on the tree, basically unassuming by all appearances. The fact that it had (surprise!) a 327 was pretty much lost on her. But I knew better!
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Old 05-13-09, 09:56 PM   #9
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I knew it would be something that I was looking at but not seeing. I guess that's what I get for trying to rush surf the net before clocking out at work. Mind was on other things.

Thanks all,
Mike
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