Shimano 11-46 cassette, new chainrings, affordable brakes

New 11-46 cassette offers 9.5% more range than previous 11-42 1x offering

Components News
After months of speculation in our forums and elsewhere, the rumors have been confirmed.

After months of speculation in our forums and elsewhere, the rumors have been confirmed (click to enlarge).

While rumors had been circulating for months that Shimano was developing a wider range version of their 11-40 and 11-42 11-speed cassettes, the brand officially confirmed today that a new 11-46 cassette would be available mid summer. Compared to the existing 11-42 XT Cassette, this newly announced model will offer 9.5% more range. According to the press release, the CS-M800 cassette will be compatible with both XTR M9000 and Deore XT M8000 drivetrains and has a target weight of 450g.

Dynamic Chain Engagement
 
The DCE tooth profile is designed to provide “superior chain retention, lower driving noise and increased durability.” (click to enlarge)

Shimano also announced new XTR (SM-CRM91) and Deore XT (SM-CRM81) level chainrings which will utilize their Dynamic Chain Engagement (DCE) tooth profile. The XT version will use steel plated teeth for greater durability, while the XTR model has strengthened aluminum teeth for reduced weight.

To bring everything together, the Japanese company has also announced a tool-free quick link (SM-CN900-11), which is compatible with all of their 11-speed chains. If you prefer to not dirty your hands, Shimano recommends using their TL-CT10 cable cutter, although my assumption is the Park Tools Master Link Pliers (MLP 1.2) will also work for quick installation and removal.

For those still clinging to front derailleur technology, Shimano has released new lower geared combinations for 2×11 and 3×10 cranksets. The DYNA-SIS 11 FC-MT700 will now ship with a 34-24T, while the 3×10 MT500 receives a 40-30-22T.

The 2x11 crankset features Hollowtech II crank arms.

The 2×11 crankset features Hollowtech II crank arms (click to enlarge).

And finally, there are two new hydraulic disc brake models that will be slotting in just below the entry level Acera groupset. The M365 and M315 will share technology from their higher end models, but the M365 ships with a lighter aluminum lever. To accompany these new models will be a new center lock disc brake rotor (Sm-RT10) which will be available in either 160mm or 180mm diameters and will require the Shimano TL-FC36 or TL-LR11 tool for installation.

The new additions to Shimano’s brake and rotor product line (left) will help bring their well regarded hydraulic technology to even lower price points. The new Shimano quick link (right) will be compatible will all of their existing 11-speed chains.

The new additions to Shimano’s brake and rotor product line (left) will help bring their well regarded hydraulic technology to even lower price points. The new Shimano quick link (right) will be compatible will all of their existing 11-speed chains (click to enlarge).

These components will be available for aftermarket purchase this summer. Pricing information has yet to be released.

For more information visit bike.shimano.com.

Photo Thumbnails (click to enlarge)

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  • oldmtb says:

    XTR CS-M970 11-32 is 221g for a 9 speed cassette
    XT CS-M770 11-32 is 260g for a 9 speed cassette.
    Why is it exactly that we have the unnecessary weight of 2 extra gears and giant dinner plate sized granny cassettes?
    Seems like a front derraileur and a 22 tooth granny chainring would be lighter.

    • teleken says:

      ^^ Because 1x makes you a cool guy & better looking. So says the industry.

    • evenoldermtb says:

      Especially at the extreme rear end of the bike and mounted as unsprung weight on a full suspension bike. Seems like the marketing guys are having their way with us again.

      Shimano XT cassette M760, 9 spd. 11-32 269 grams.

    • DirtBag says:

      Because you’re out of touch with the industry if you do not conform to the new 1X and Boost.

    • Bob C says:

      Don’t knock it if you haven’t tried it! :) No front derailleur also means no left shifter, fewer moving parts, less complex drivetrain tuning (only one shifter/derailleur – no cross chaining to worry about!) Simpler/lighter crankset read as more choices in crankset are compatible!) And that dinner plate gear on the rear is barely a few grams heavier than the 36 or 34 you have right now. So all in all – quite a bit of weight saved and an all around simpler drivetrain. The only trade off I’ve found running 1×10 vs 2×9 is occasionally there is a SLIGHT loss in the ability to pick the exact perfect gear ratio for the particular climb/rock garden, etc. – but 10 seconds later that is self correcting! :) Also, running 1x you typically loose some top end gearing range – but unless you are spinning long gravel/road sections on your rides (i.e. you spend a lot of time on the “big ring”) you likely won’t notice. For me, I run 1×10 w/ an 11-42 cassette and a medium cage clutch derailleur. I switch between a 30, 32, or 34 narrow wide front ring depending on where I’m riding. The switch takes less than 10 minutes – can be done in the parking lot with ease and doesn’t even require a change in chain length!

      Oh Yeah! You can get that dinner plate and front rings in all flavors of pretty colors too! :)

  • duder says:

    oldmtb…you lose a front derrailleur, front shifter, cabling, chainring(s) to counter the additional weight added at the cassette vs a 2×9/3×9

  • Jack says:

    The 42t seems to be enough. Isn’t it faster to walk your bike versus a 46t?

    • jpre says:

      @Jack
      It doesn’t matter if it’s faster if you like riding vs walking

    • ray says:

      No. Walking is never faster.

    • sgniwder99 says:

      Only if you keep the same chainring. The other way to look at this is that you get more top-end by going to a bigger chainring, without losing that 20″ low gear. That would actually appeal to me more than the idea of an even lower low gear.

      I’d wonder what you’re going to run into with gapping with that kind of spread, but maybe it wouldn’t be too bad.

  • Roger says:

    I’ve got a 42t now and will switch to a Wolf 44t this week to just have something in the bank, but man, a 46t will get me up a hill so steep I might be too scared to roll down the other side!!!

  • john says:

    still run a 2X… I can’t count how many times I watch guys pushing their brand new 1X 650b’s up the hills around here, lol

  • duder says:

    As long as you choose the correct front chainring, there is no need for a front der…

  • Josh Robinson says:

    You lost me at target weight of over a pound!

    Why is it that I can’t have the 29er gears I want, on an XTR quality cassette?

  • preston says:

    >As long as you choose the correct front chainring, there is no need for a front der…

    Unless you also want to have a good cruise down the other side too.
    I can’t understand this fervor for getting rid of the FD at the expense of functionality.

  • oldmtb says:

    there were a bunch of off camber roots and stuff on an xc race I did last year. It caused dropped chains for a bunch of people including me. I just shifted the chain back on while all the 1x bros had to get off their bikes and f*** with **it.

  • duder says:

    nah, if chosen correctly, you wont miss much there either

  • just another dave says:

    agree w duder above, and dunno why having options has become so controversial–maybe we’ve become too nearsighted to consider that where i ride and what i like may not apply to everyone else and vice versa. i remember riding 3×7 (24-36-46 x 12-30) fully rigid steel bikes in Tahoe back in the day, with plenty of unnecessary redundant gears…

    i’m all for a wide range of gears without unnecessary overlap since my local trails require relatively low gearing for billygoating up steep techy climbs as well as relatively high gearing to prevent spinning out on flats or rolling terrain. and 2x drivetrains with the right chainrings and cassette range gets the job done.

    unless you’ve got a bike with a rear suspension design (or combo of supershort chainstays and/or plus size tires and/or “boosted” rear hub standard…) that isn’t compatible with a front derailer, or you wanna cut weight by dropping your front derailer & shift lever/front housing & wire/extra chainring and bolts. then whatcha gonna do if you want a 1x drivetrain with a wide range of gears?

    whatever, but i embrace 1×11 (or retrofit 1×10) systems and the emergence of 42, 44, and now 46 tooth cogs for giving some riders more gearing options. if if that doesn’t work for where and how you ride then don’t waste your money on it.

    like everything else, the marketplace will determine if big pie plate cogs are worth keeping, like hydraulic brakes and suspension damping that evolved from motos, or if it will die on showroom floors and warehouses stocking internet retailers like suspension stems and custom purple anodyzed cantilever brakes of years gone by.

  • crisco says:

    Did the patent expire on KMC’s quick link, or what?

  • Sal Goodman says:

    Purple anodized cantilever brakes are outdated?

  • BlackBean says:

    Its great to have the variety. Everybody will defend their setup to justify either spending the money or saving the money. There are tons of different terrain out there and people have varying skills and fitness. I can understand why people want some variety, or need it. I prefer 1x because it works for everything I ride. If I walk it, it’s because I CAN’T ride it due to skill. And with a 36t ring up front I have plenty of range for fast flats and rail beds (my 2x had a 36t/28t front setup, so my top end range is still the same, and I really don’t miss any bottom end range). I don’t miss my FD a single day. I am glad to be rid of it. It freezes up in the winter, and it’s an almighty PITA to use. Every time before hitting a steep climb you have to decide whether to stay in the big ring or shift down, and then when the climb is over, you have to shift back up. Annoying and cumbersome. To me a FD has always been a hack. But I DO understand that some people, maybe even the majority, wants it or needs it. I think instead of bitching about it, we should enjoy that we have all these options today. Every person chooses what works for them, and what works today might not work tomorrow. It’s just fantastic that we have all these options.

  • alain smithee says:

    A 1×11 drivetrain got my dyslexic daughter back on a bike because she doesn’t have to stop and think which shifter controls which derailleur.

    I’ll take bets that quite a few hybrids hitting bike shops with a 42t front chainring and this 11-46 cassette this fall and next spring.

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