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Can anyone confirm that the XT cs-m760 is lighter than the m770? According to JensonUSA.com it is, and also on the weight weenies chart the m760 is 264g vs. the 2008 m770 listed at 296.

What would the benefit of the m770 be over the m760?
 

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The Weight Weenie website lists the 11-32T CS-M770 at 256gms and the 11-34T at 296gms. The CS-M760 11-32T is 264gms and 296gms for the 11-34T. The new 770 series have 5 arms to reduce the problem of sprocket bending.
 

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CS-M760 vs. CS-M770 9 speed cassette

Does anyone know if the CS-M770 cassette is interchangeable with the CS-M760? I have the CS-M760 9 speed 11/34 on my Long Haul Trucker touring bike and need to replace the cassette. Just wondering if the 770 is the next generation design and if interchangeable with the 760. Looks like the same except for the pins on the back of the big cog to prevent chain overshift and getting caught between cogs.

Thanks
 
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