Shimano Deore XT RD-M770 SGS Rear Derailleur

4.33/5 (3 Reviews)
MSRP : $109.99

Product 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.

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Reviews 1 - 3 (3 Reviews Total)

User Reviews

Overall Rating:5
Value Rating:5
Submitted by tlmiller a Cross Country Rider from Hot Springs, AR

Date Reviewed: August 24, 2011

Strengths:    easy to adjust, intuitive

Weaknesses:    None

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

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Duration Product Used:   Less than 1 month

Price Paid:    $41.00

Purchased At:   ebay

Similar Products Used:   xt shaddow sgs, xt sgs, slx sgs, dura-ace

Bike Setup:   Sulsa Fargo, XT build

Overall Rating:5
Value Rating:4
Submitted by M.C. a Cross Country Rider from Wall, NJ, USA

Date Reviewed: May 30, 2011

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

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

Bottom Line:   
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.

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Favorite Trail:   Allaire Park

Duration Product Used:   2 Years

Price Paid:    $60.00

Purchased At:   eBay

Similar Products Used:   deore rd M531, xt rd m750

Bike Setup:   gt xcr1500, epicon fork, fox float rear shock, deore shifters, xtr front derailleur, quad qhd brakes.

Overall Rating:3
Value Rating:3
Submitted by jdfloresd a Cross Country Rider from Atlanta, GA

Date Reviewed: May 28, 2010

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

Weaknesses:    Durability

Bottom Line:   
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.

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Favorite Trail:   Blanket's Creek

Duration Product Used:   3 months

Price Paid:    $75.00

Purchased At:   e-Bay

Similar Products Used:   rd-m772

Reviews 1 - 3 (3 Reviews Total)

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