Shimano XT Dyna-Sys CS-M771 Cassette
ShimanoXT Dyna-Sys CS-M771 Cassette

When every gear counts.

It was only a matter of time before Shimano added a cog to its XT-level cassette. The XT Dyna-Sys CS-M771 Cassette utilizes the same Hyperglide tooth and ramp shapes that were so successful in the 9-speed version, to move your chain smoothly across all 10 gears.

The XT Dyna-Sys is fabricated from plated steel, which gives you a high performance cassette that doesn’t cost a premium. The spiders between the cogs are alloy and the entire 10 gears are secured with an alloy lockring.

  • Plated steel cogs
  • Compatible with Shimano’s Dyna-Sys 10-speed shifters and derailleurs
  • Reviews
  • Q & A

Hard to beat

  • Familiarity: I've put it through the wringer

Shimano's XT grupo has always been top notch for the price range and this cassette is no different. Pair it with a Wolf Tooth or OneUp larger cog in a 1x setup or use it in a classic 2x style setup. I've done both and can't find a problem!

works great, not the best wear

  • Familiarity: I've put it through the wringer

I'm on my third in 1.5 years on my trek remedy so I'd ding it slightly for durability, but it's a nice cassette for the money.

Paired up with a Wolf Tooth Giant Cog

  • Familiarity: I've put it through the wringer

The cassette pairs up perfectly with the 42t Giant Cog from Wolf Tooth! (17t cog removed)

Paired up with a Wolf Tooth Giant Cog

Solid cassette

  • Familiarity: I've put it through the wringer

Slapped this cassette on my Scott Genius along with a Wolf Tooth 42 cog and I couldn't be happier. The shifts are crisp and because it is a Shimano, I know it is built to last.

Can't go wrong

  • Familiarity: I've put it through the wringer

Great cassette as always from Shimano. Used it to convert my cross bike to a 1x10 for commuting and have had zero issues. Works great with a Sram drivetrain.

Works great, long lasting

  • Familiarity: I've put it through the wringer

Great shifting and durability makes this cassette/drivetrain one to keep until they come out with the 1x15 group.

Quality product

  • Familiarity: I've put it through the wringer

Shimano components live up to their reputation. Crisp and smooth shifting.

Great upgrade

  • Familiarity: I've used it several times

The Shimano XT cassette was a nice upgrade on my rear drive along with other XT components. High quality and a solid component from Shimano.

Teeth Fo Days

11-36t paired with Wolf Tooth 42t cog.

Teeth Fo Days

Best 10 Speed Buck Banger!

  • Familiarity: I've put it through the wringer

I just replaced my m771 cassette the other day that had around 2200 miles on it. I bet I could have easily hit 3k on it, but alas, I am converting to a new 1x setup. Since I am making the conversion, I thought I would replace pretty much all of my drivetrain. Right now, my bike is all XT, so I figured I would stick with that since I've had great luck with it.

In addition to the new cassette, I've even added a new Wolf Tooth GC (42t) for making climbs easier since I am losing my granny on my old 2x setup.

If XT is a bit too rich for your blood, essentially, you can always snag the HG81 (SLX series) for a tad less; however, your middle cogs will be riveted together unlike the m771 version.

Unanswered Question

I have 10 speed Ultegra 6700 grupo. Want a 32 tooth low cog. Please advise.

I have a road bike with Ultegra 6700 Ten speed grupo. I want a 32 or 34 or 36 tooth 10 speed cassette to work with Ultegra 50-34 crank. Do I need a long cage der.?

I have the same setup and same problem. You will max out on a 11-32 cassette. From my research you want to buy: Shimano M771 9 speed rear derailleur. See:

Wolftooth Giant Cog Modification

  • Familiarity: I've used it once or twice and have initial impressions

I purchased this cassette to support a Wolftooth Giant Cog (40t) conversion of my 1 x 10 drive train - works incredibly well all put together. Check out the Wolftooth web site for more information.

I opted for the Wolftooth 16t cog to replace the cassette 15 & 17 cogs and I think that was the right move.

So far so good (1 ride), but will check back later in the season.

Don't forget to buy a new chain if you're going to convert to the GC.

Wolftooth Giant Cog Modification

I did the same as you, well, went with a 42t, but totally lovin' it!

xt cassette

  • Familiarity: I've put it through the wringer

works awesomely, until it breaks. I rode it pretty hard for 2+ years, until the alum arms for the larger chainrings sheared and broke. just ordered another.

something to note: these later models (2014+) fixed an issue that the earlier (circa 2012) models had: the older model's small cassette chainrings had narrow profiles with spacers between the rings. Since the interface between the chainrings and freehub body was as narrow as the chainring teeth themselves, if you pedaled hard, the chainring would cut into (and mar) aluminum freehub bodies. The newer models have the spacers between small rings integrated into the rings themselves, thus increasing the interface area between ring and freehub body, and reducing the marring of the freehub body.

What does the 11-36 weigh?

  • Familiarity: I've used it several times

This cassette weighs 335.4 grams.

Hello Dan,
What size new chain will fit on this? Will 11 speed chain work?

XT Quality

  • Familiarity: I've put it through the wringer

This cassette is super durable and shifts crisp. Exactly what you come to expect from Shimano. I have it paired up with single ring in the front and it works great.


  • Familiarity: I've put it through the wringer

Shimano line of xt is the excellence of mid level builds, great equipment for the price!

Another great XT product.

  • Familiarity: I've put it through the wringer

This is the best shifting affordable cassette available. Lasts a long time and shifts great when using an xt chain. It also is compatible with the extended range 42T cogs from 1up, wolftooth and others where you have to remove the 17T. I use a xtr on the race wheels and xt for training where the small weight penalty is nothing. Use a chain gauge and replace the chain when it stretches out of tolerance. These cassettes last a long time if you keep them clean and the chain lubed.

Another great XT product.

Can't go wrong with XT quality

  • Familiarity: I've put it through the wringer

This 10 speed 11-36 cassette is a tough one to beat. It's plenty durable for logging big miles and it also shifts great and keeps the chain running smoothly. The profile of the teeth is nicer than that of SRAM options. It's not as light as XT, but for general use or for training purposes you can't go wrong.

Hi, Can I replace my Shimano CS-HG62-10...


Can I replace my Shimano CS-HG62-10 11-36 with this ?

My bike is equipped with

Rear Derailleur: Shimano XT RD-M786 SGS Shadow Type / 30 Speed

Front Derailleur: Shimano SLX FD-M671-A / 34.9mm

Shifters: Shimano SLX SL-M670-I Rapidfire plus / 2 way release Ispec clamp

Best Answer

This cassette will definitely work on your 10 speed drive train. It is a little nicer, lighter cassette than the CS-HG62, so you should have no issues with it!

Let us know if you have any additional questions.