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New SHIMANO DEORE components deliver a new level of premium performance to the value category by bringing hallmark elite mountain bike technologies to a new price level. SHIMANO DEORE M6100 is a no-compromise component group, offering a full 510% gear range and all of Shimano’s top 12-speed technological innovations first introduced with XTR M9100. SHIMANO DEORE also builds on its legacy as a versatile, value-focused group by broadening its ranges with 10- and 11-speed options.

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SHIMANO DEORE M6100 packs Shimano’s pinnacle 12-speed mountain bike technologies: wide range 10-51T cassette, HYPERGLIDE+ technology, I-SPEC EV, Direct- Mount chainrings, extended inner-link plate chain, and MICRO SPLINE FREEHUB design.

SHIMANO DEORE M6100: 12-Speed Trickle Down Technology

Delivering SHIMANO’s premium technology and shifting performance, the new SHIMANO DEORE M6100 drivetrain delivers more efficient shifting up and down the cassette with HYPERGLIDE+ technology. The MICRO SPLINE FREEHUB design delivers a durable construction that works seamlessly with the system’s new 10T small cog. Adding to SHIMANO DEORE’s performance package is Shimano’s DYNAMIC CHAIN ENGAGEMENT+ that provides stronger chain retention and smoother pedaling. All of this wrapped in a powerful package with stylish details, including color-shifting logos that change hues with light angles.

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FC-M6100 12-Speed Cranksets

  • Direct Mount chain ring
  • 2-piece crankset construction
  • Single front chainring only
  • Chainring options: 30, 32T
  • Crank arm length options: 170, 175mm


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CS-M6100-12 Wide Range Cassette

  • New HYPERGLIDE+ shift technology
  • 10-51T (510%) gear range
  • MICRO SPLINE interface
  • All steel cogs
  • Designed for single front chainring setup
  • 10-12-14-16-18-21-24-28-33-39-45-51T


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RD-M6100-SGS Rear Derailleur for 1x12 Setup

  • Fast and precise shifting
  • 13T pulley
  • For single front chainring setup
  • 51T max cog size
  • SHIMANO SHADOW RD+ technology

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SL-M6100-IR and SL-M6100-R - Right Shift Levers

  • RAPIDFIRE PLUS shifting
  • 2-WAY RELEASE with push and pull movements
  • OPTICAL GEAR DISPLAY option
  • Available in two models: SL-M6100-IR–I-SPECEV or SL-M6100-R–BandClamp

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BL-M6100 Brake Levers

  • One SHIMANO DEORE brake lever for both 2-piston and 4-piston brake calipers
  • Quick brake engagement with shorter free stroke
  • Optimized lever axle position and refined ergonomics
  • I-SPEC EV compatible

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BR-M6100 – Efficient 2-piston brake caliper

  • Excellent brake control
  • Compatible with SHIMANO ICE TECHNOLOGIES brake pads
  • Inboard hose routing for clean setup

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BR-M6120 – Powerful, 4-piston brake caliper

  • Powerful brake design
  • 4-piston hydraulic brake caliper
  • Inboard hose routing for clean setup

SHIMANO Series 12-Speed Hubs

Rounding out the SHIMANO DEORE 12-speed system is a value-priced hub set. The non-series MICRO SPLINE MT410 hubs deliver simple setup and reliable trail performance. The radial cartridge bearings are a first for SHIMANO, offering 12-speed hub options in 142 and 148mm O.L.D. spec at the value level.

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Vital Has a DEORE Group - Test Forthcoming

The real deal

A complete DEORE group showed up just before launch and we've had a chance to take a quick look. Our initial impressions make us feel like this is a solid group, ready for the trails. There is generous use of metal here, no plastic derailleur bodies or otherwise dainty feeling parts could be found. To us, the inclusion of a four-piston brake is a clue as to Shimano's intentions here and we like that.

DEORE derailleur, only a few grams heavier and looks every bit the part
A bit heavier but look very much ready for business

Time will tell once we get all these goodies mounted up to our bike and start clocking the miles. In the meantime, we happened to have some XTR and XT parts at the ready, along with a scale. For fun, here are some shots of the DEORE and XTR bits lined up.

WEIGHTS - Shimano XT Four-Piston Front Brake, XTR Derailleur, XTR Cranks, and XTR 12-speed cassette

WEIGHTS - Shimano DEORE four-piston front brake, rear derailleur, cranks, and 12-speed cassette

Weight is one thing and for the most part we all know where the savings are made (in case the photos didn't spell it out.) What we are excited for is getting these parts on the trail, in particular, the new brakes. Top shelf stuff is nice and all but keeping the wallet heavy feels just as good to many mountain bikers. When the entire DEORE drivetrain will run you less than just a top-shelf cassette, it warrants an honest look.

In the meantime, head to bike.shimano.com for full details, including the 1x11 lineup.

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BHowell BHowell 5/7/2020 8:00 AM

18 comments newest first

There is going to be no Servo Wave, not XTR brake lever. Hooray, Saint calipers without the random bite points here we come!

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This makes me happy for all those mid-to-low-range mountain bikes! This range now has good suspension, good brakes, good wheels, good droppers and a good drivetrain. I hope the price of bikes are low to spread the fun.

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So if you want to hold out as an 11 speeder, what's the gear range on those 2 11 speed cassettes? And what derailleurs will be compatible with them? Microspline only I got, but didn't see that bit. Asking for those who want to keep their current wheel that's HG and just upgrade the freehub to microspline to get the better shifting cassettes?

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I'm runnning an 11sp Xt shifter and a 12 sp SLX mech on a XT 11-46 cassette (HG) and it works fine. I might get the SunRace 11-50 11sp cassette next. And maybe eventually 12?

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Unfortunately no list of the individual steps on the site . Just the ranges of tj3e cassettes. Visually looks like they gor a taller 2nd gear instead of 39 tooth.

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Is this what you’re looking for? https://productinfo.shimano.com/#/spec/MTB/Cassette%20Sprocket

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And if you want to get really weird, you can run an 11 speed SRAM shifter with a 12 speed SRAM eagle derailleur so the derailleur accepts the big range cassette. Wonder if you can mismatch Shimano shifters and derailleurs, too.

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Love that Shimano are sticking with Micro Spline for the entry level group, instead of doing what SRAM did with the NX Eagle cassette (ditching XD driver and going with a reduced range cassette on the old Shimano style freehub driver). What this means is that there is an easy upgrade path available to people who buy lower specced bikes, where they can swap out the cassette to save some weight down the line without having to also get a new freehub driver or potentially even have to change out the whole wheel. Kudos to Shimano on this one!

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the hell is wrong with you? this means older bikes with no interchangeable driver body cant ugprade to 1x12. which was the reason nx got older body in the first place. if shimano was sensible they offered oem micro spline for new bikes, and aftermarket cassette with bigger cogs. they didn't. they simply want to push their stupid body to the market.

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There’s brand new 5100 and 4100 11-46 and 11-51 10 and 11 speed DEORE for the HG freehub. Relax.

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See....now that is useful information. LLLLL com9ng through.

ICEMAN...I dont think it's an understatement to say that making NX 12 speed on the HG body is primarily a brand movement to gain and/or keep people on lower end speced bikes buying SRAM and moving those parts over to their wife's older bike to match the husband's high end upgrades. #1 thing I've seen occur is people who pick up a bike with NX are moving it to a family members older rig as an upgrade & tossing XD on theirs as they upgrade wheels

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I don't think that offering a 12-speed upgrade path for people with older bikes was very high on the list of considerations when NX Eagle was designed. Helping bike brands hit an even lower OEM price point by enabling them to spec super cheap, non-XD-driver hubs/wheels was likely more important. Since the future is 12-speed and the future is pretty much now, I think it's legit to design the whole range to run on the same, new freehub driver. We're always complaining about the lack of standards - well here you go, here's a chance to get rid of one old one (we'll always be stuck with two though, since the two drivetrain companies refuse to share a freehub standard). Both XD and Micro Spline are better than the one they replaced anyway. There are still plenty of 11-speed options with a wide range cassette available that can run on the old splined freehubs, so it's not like riders with old hubs are left out in the cold. And if they don't want to replace their freehubs they won't get the biggest benefit of the 12-speed stuff anyway (the extra-wide gear range) - just an extra gear in the middle of the range, which is pretty useless and not a very valid reason to upgrade. So it's by and large a moot point.

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