Shimano Deore XT M770 Cassette Sprocket Cassette

3.7/5 (10 Reviews)
MSRP : $64.98


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Product Description

The 2008 Shimano Deore M770 Cassette is a strong and durable cassette that features small pins on the back of the large cog in order to prevent chains from damaging your spokes.


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Reviews 1 - 10 (10 Reviews Total)

User Reviews

Overall Rating:4
Value Rating:3
Submitted by Rad Rider 415 a Racer from PA

Date Reviewed: May 12, 2011

Strengths:    Light, Precise shifting

Weaknesses:    I bent the Granny within 2 weeks of using it.

Bottom Line:   
Not bad if It wasn't for a bend in the granny gear. It bent and I had bad chain suck for half of a race.

Expand full review >>

Favorite Trail:   Mt. Gretna

Duration Product Used:   Less than 1 month

Purchased At:   Came on a used niner

Similar Products Used:   Sram 9 speed

Bike Setup:   Niner Air 9

Overall Rating:5
Value Rating:5
Submitted by jramirezar a Cross Country Rider from Bucaramanga, Santander, Colombia

Date Reviewed: January 10, 2011

Strengths:    Light weight, durability, good shiftiing

Weaknesses:    none...

Bottom Line:   
Even though I´m not a hard rider or racer, I usually ride 150-200 km/week. This cassette has lasted more than 2 years and still runing good, I have another chain to rotate between both chains every 3-4 months, so I can make it last longer. Shifting is great, mainly because of X7 shifter-X9 rear derrailleur-Sram chain, and I reduce power and increase rotation during shifting to have smooth shifts... It's great for the price...

Expand full review >>

Favorite Trail:   XC

Duration Product Used:   2 Years

Price Paid:    $70.00

Purchased At:   Welcome

Bike Setup:   Stumpjumper hardtail, fox 32 100 mm, sram x7 shifter, x9 rear derrailleur, mavic-sun ringle-DT swiss wheels, XT crankset, Thomson stem and seat post

Overall Rating:4
Value Rating:4
Submitted by eshew a Weekend Warrior from Seattle

Date Reviewed: November 23, 2010

Strengths:    Price & quality. 5 arm design last resists bending more than the old 4 arm.

Weaknesses:    None I've experienced 1st hand

Bottom Line:   
Shifts very smooth & fast. Absolutly love the 12-34 combo. If you find yourself in the granny gear often (common if you are Pacific Northwest) then the 34 is a must have.

There are obviously reviews of bent cassette rings but its tough to say if its on the older 4 arm design compaired to the one you find for sale now which is the stronger 5 arm. Not going to say it cant be bent (I try to reduce power during shifts cuz I gots old school skillz) but I have yet to find an issue and wont be replacing this cassette for a very long time.

Expand full review >>

Favorite Trail:   Galbraith

Duration Product Used:   3 months

Price Paid:    $70.00

Purchased At:   Performance

Similar Products Used:   Old shimano, Sram 970

Bike Setup:   On my 1996 Kona Sex One & 2008 Kona Dawg (custom)

Overall Rating:1
Value Rating:2
Submitted by Apt a Weekend Warrior from Victoria bc

Date Reviewed: August 15, 2010

Strengths:    Light ish looks ok

Weaknesses:    Bends easier than a Beckham free kick
Usually second largest cog - four times now


Bottom Line:   
XT's durability on this cassette for a "workhorse" line blows big time. Bent four of these in about 2 years.
Considering slx or hg-50 now or even 990. Like with most things I am sure they do it on purpose so you buy more but I won't be buying another xt cassette unless it's free.

Not saying I am light on things but at 175lbs I am hardly heavy! Shifting could be a factor but I am really not shifting that badly.

Expand full review >>

Favorite Trail:   Dump

Duration Product Used:   More than 3 years

Price Paid:    $70.00

Similar Products Used:   Lx

Bike Setup:   C'dale Rize four
New blur on way

Overall Rating:5
Value Rating:5
Submitted by TTTURNER a Cross Country Rider from LA QUINTA

Date Reviewed: June 5, 2009

Strengths:    Always shifts well. Reasonably light and strong.
Relatively inexpensive.


Weaknesses:    It doesn't last as long as XTR

Bottom Line:   
Shimano has made this cassette stronger over the 760. It is slightly more expensive than the Sram 980, but shifts slightly better. I wish it lasted as long as my XTR! Buy it!

Expand full review >>

Favorite Trail:   BUHOFF

Duration Product Used:   1 Year

Price Paid:    $65.00

Purchased At:   JENSON

Similar Products Used:   Almost All

Bike Setup:   Turner Flux,Fox Front and Rear(Push Industries), Mavic SL Disc, XTR Cranks, XO Shifters

Overall Rating:5
Value Rating:4
Submitted by XSL_WiLL a Weekend Warrior from Naperville, IL, USA

Date Reviewed: June 4, 2009

Strengths:    Weight, durability, shifting, doesn't bite into the freehub body.

Weaknesses:    None.

Bottom Line:   
I usually use SRAM products. I prefer Rockshox forks, Avid brakes, and SRAM shifters and derailleurs. But I have always come back to Shimano cassettes and cranks.

The cassettes just seem to be made better and shift better than SRAM cassettes.

I've owned both XT and XTR. There is no discernible difference in shift quality between the two. The difference is mostly weight. The weight of the XT can be further reduced with the use of an alloy lockring rather than the heavy steel one.

As for durability. I like gate starts. So a quick snap, and lots of shifting under power. The cassette still has plenty of life in it.

I like that the larger cogs are mounted on an alloy spider, they do not chew up the freehub body.

No matter what kind of riding you do, these cassettes are a great way to improve shifting and maybe even save some weight.

Expand full review >>

Duration Product Used:   1 Year


Overall Rating:3
Value Rating:2
Submitted by ratmogers a Cross Country Rider from San Diego, CA

Date Reviewed: December 8, 2008

Strengths:    Weight

Weaknesses:    wears out, bends easily

Bottom Line:   
On about the 8th or 9th ride the second and 3rd largest cogs were shifting poorly after a mud ride. After getting it home I noticed that the 2nd cog was bent! No way to get it straight again without replacing the cassette. This will get expensive if I'm replacing the cassette every few weeks.

Expand full review >>

Duration Product Used:   Less than 1 month

Price Paid:    $109.00

Purchased At:   REI

Similar Products Used:   SRAM

Bike Setup:   2008 Yeti 575

Overall Rating:1
Value Rating:2
Submitted by scooter24 a Cross Country Rider from manchester,ct. usa

Date Reviewed: November 16, 2008

Strengths:    none other than the weight of it.

Weaknesses:    they wear out very quick,used for only 3 months and starting to skip on the top 3 cogs.

Bottom Line:   
bottom line is buy sram it weighs a little more,but last a lot longer and shifts about the same.

Expand full review >>

Favorite Trail:   green monster

Duration Product Used:   3 months

Price Paid:    $47.00

Purchased At:   chain reaction cycle

Similar Products Used:   sram 970

Bike Setup:   chumba xlc with xt parts.

Overall Rating:5
Value Rating:5
Submitted by lowflier03 a Weekend Warrior from Atsugi, Japan

Date Reviewed: November 9, 2008

Strengths:    Lightweight, sturdy, crisp shifts.

Weaknesses:    None

Bottom Line:   
Needed something to replace the lead brick that came on the bike. Every other cassette I have used has had some slop when shifting under load and well as eventual bent cogs, not to mention being way to heavy. The XT cassette feels super light compared to the others I have used, it gives me crisp shifts even under heavy climbing and feels alot sturdier and better built. Definitely worth the money if you dont like weight, or do a decent amount of climbing.

Expand full review >>

Favorite Trail:   Fujimi

Duration Product Used:   3 months

Price Paid:    $50.00

Purchased At:   LBS

Similar Products Used:   Shimano Deore, Sram

Bike Setup:   '07 Stumpjumper FSR Elite, XTR groupo with XT cranks and cassette, Bomber 140mm Fork, Chris King Headset.

Overall Rating:4
Value Rating:5
Submitted by Ahmed Shah a Cross Country Rider from Kuala Lumpur

Date Reviewed: November 7, 2007

Strengths:    Ligther And Cheaper Than PG-990

Weaknesses:    None So Far

Bottom Line:   
Great , Stiff Enough , Shift Great , Of Course Not As Light As XTR , Great For Price

Expand full review >>

Favorite Trail:   Kiara

Duration Product Used:   Less than 1 month

Price Paid:    $38.00

Similar Products Used:   PG-990

Bike Setup:   Commencal VIP , Sram X.9 , Stylo , Crossland

Reviews 1 - 10 (10 Reviews Total)

Review Options:  Sorted by Latest Review | Sort by Best Rating

 

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