Shimano Deore XT RD-M770 SGS Rear Derailleur

Shimano Deore XT RD-M770 SGS Rear Derailleur 

DESCRIPTION

Efficiency was the key principle when designing the Shimano Dyna-Sys XT M780 SGS 10-speed rear derailleur. The derailleur was designed with a longer swing arm and a tighter spring for crisper shifting when you want it, and less 'ghost shifting' when you don't.

USER REVIEWS

Showing 1-3 of 3  
[Aug 24, 2011]
tlmiller
Cross Country Rider

Strength:

easy to adjust, intuitive

Weakness:

None

This product is easy to install and very intutive to use. I am changing all my bikes to this derailer.

Similar Products Used:

xt shaddow sgs, xt sgs, slx sgs, dura-ace

OVERALL
RATING
5
VALUE
RATING
5
[May 30, 2011]
M.C.
Cross Country Rider

Strength:

Buttery smooth shifting, low normal design is AMAZING for uphill shifting on the fly, precise - when properly adjusted virtually no ghost shifting.

Weakness:

Needs periodic adjustment to function perfectly. Not happy when an errant stick runs through it's pulleys.

The low normal ( rapid rise ) design is so intuitive, I do not understand why all rear derailleurs are not set up this way. If you have always used a top normal (standard) rear derailleur, this model may take some getting used to but it is worth it. There is nothing like downshifting at will while climbing a steep incline and feeling NOTHING from your bike's transmission - no grating, no clunking, no chain complaints whatsoever. Just a smooth transition from one gear to the next. I get shivers just thinking about it.

Similar Products Used:

deore rd M531, xt rd m750

OVERALL
RATING
5
VALUE
RATING
4
[May 28, 2010]
jdfloresd
Cross Country Rider

Strength:

Shifting is even smoother than rd-m772 (shadow) when combined with Dua-Control levers

Weakness:

Durability

I don't know if I got a lemon, but about a couple of months ago I upgraded my shifting/brake levers to Dual-Control (ST-m775), which is a great set by the way. And decided to test the rd-m770 (low normal), since is supposed to work great with the dual control levers. It DOES work great, wonderful shifting, it takes a while to get used to the reversed shifting but once got used, shifting felt great.

However, only after 2 months, when cornering a fallen tree, somehow after that, the derailleur broke, my chain broke in consequence of that and had to walk 3 miles back to the parking lot.

Similar Products Used:

rd-m772

OVERALL
RATING
3
VALUE
RATING
3
Showing 1-3 of 3  

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