FIRST LOOK: 2021 SHIMANO DEORE MTB DRIVETRAIN

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.

SHIMANO DEORE M6100

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

SHIMANO DEORE M5100

M5100 components build on 11-speed mountain bike drivetrain technologies offering a redesigned rear derailleur, wide range 11-51T cassette, and I-SPEC EV technology.

SHIMANO DEORE M4100

Bringing value and versatility into the existing 10-speed platform. An 11-46T cassette, I-SPEC EV brakes and shifter options, and a rear derailleur with a 40% price reduction bring expanded capability to 10-speed mountain bikes and provide significant upgrade potential.

SHOP: SHIMANO DEORE M6100 | ALL SHIMANO PRODUCTS | WHICH COMPONENTS DO I NEED?

SHIMANO DEORE M6100: 12-Sp 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.

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
MODEL NO. Q-FACTOR CHAIN LINE O.L.D.
FC-M6100-1 172mm 52.0mm 142mm / 148mm
FC-M6120-1 178mm 55.0mm 148mm
FC-M6130-1 181mm 56.5mm 157mm

M6100 CHAIN & CASSETTE

CN-M6100 Chain

  • New HYPERGLIDE+ shift technology
  • Extended inner link plate
  • Quick link for easy connect and tool-free assembly 


CS-M6100-12 Wide Range Cassette

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

M6100 REAR DERAILLEUR

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

M6100 SHIFTERS & DROPPER LEVER

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-SPEC EV
    • SL-M6100-R – Band Clamp

SL-MT500 Seat Post Lever

  • Quick lever access from grip position
  • Available in I-SPEC EV and Band Clamp

M6100 BRAKE LEVERS

SL-MT500 Seat Post Lever

  • Quick lever access from grip position
  • Available in I-SPEC EV and Band Clamp

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

M6100 BRAKE CALIPER OPTIONS

BR-M6100 – Efficient 2-piston brake caliper

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

BR-M6120 – Powerful, 4-piston brake caliper

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

SHIMANO DEORE M5100 11-SPEED AND M4100 10-SPEED GROUPSETS

Bringing proven technology with expanded applications for value conscious riders, SHIMANO DEORE M5100 and M4100 components deliver the SHIMANO DEORE brand promise of value and versatility. This flexible lineup of components brings a new level of performance in shifting and braking with expanded gear ranges for 10- and 11-speed bikes while also providing opportunities for riders to upgrade their bikes. Capitalizing on the common gear thickness and cable pull ratio of 10- and 11-speed mountain bike systems allows for a simple lineup that maximizes versatility and value. Available in both single and double front chain ring setups, SHIMANO DEORE M5100 and M4100 deliver HG and RAPIDFIRE PLUS technologies with the same I-SPEC EV brake lever and shifter design as the company’s premium mountain bike groups

SHOP: SHIMANO DEORE M6100 | ALL SHIMANO PRODUCTS | WHICH COMPONENTS DO I NEED?

SHIMANO DEORE COMPONENT MAP

Whether you're looking for an affordable option to get into modern 1x12 or trying to breathe some new life into your old 10-speed or 11-speed drivetrains, Shimano's new Deore series components have you covered. M6100 is 1x12 only and utilizes Shimano's Microspline freehub while the M5100 (11-speed) and M4100 (10-speed) series can be had in a 1x or 2x setups and the cassettes are compatible with Shimano's older HG style freehub body meaning you don't have to upgrade to Microspline. Check out the product map below to help you navigate which specific components you'll need to match your drivetrain setup.

M4100 & M5100 DETAILS

Shifter Options

  • SL-M5100 11-Speed Shift Lever
    • RAPIDFIRE PLUS shifting
    • 2-WAY RELEASE
    • OPTICAL GEAR DISPLAY option
    • I-SPEC EV or band clamp options
  • SL-M4100 10-Speed Shift Lever
    • RAPIDFIRE PLUS shifting
    • 2-WAY RELEASE
    • OPTICAL GEAR DISPLAY option
    • I-SPEC EV or band clamp options
  • SL-M5100-L Front Shift Lever
    • Universal shifter for 10- and 11-speed systems
    • RAPIDFIRE PLUS MONO shifting lever
    • I-SPEC EV or band clamp options

Rear Derailleur Options

  • RD-M5100 1x11 Rear Derailleur
    • Redesigned to allow for a 51T maximum cog size for 11-speed systems
    • SHIMANO SHADOW RD+ technology
  • RD-M5120 10/11-Speed Rear Derailleur
    • Versatile design for both 10- and 11-speed systems
    • SHIMANO SHADOW RD+ technology
    • For use with low cog sizes between 42T-46T
  • RD-M4120 10/11-Speed Rear Derailleur
    • Versatile design for both 10- and 11-speed systems
    • SHADOW technology - Maximum cog size 42T

Crankset Options

  • FC-M5100 10/11-Speed Crankset
    • 52mm chain line
    • Options for 30, 32T chain rings
    • Single versatile design for use with:
      • 10 and 11 speed systems
      • 135, 141mm O.L.D. for QR
      • 142, 148mm O.L.D. for thru axle
  • FC-M5100-2/-B2
    • For use with 2x11 systems - 22-36T chain rings
  • FC-M4100-2/-B2
    • For use with 2x10 systems - 22-36T chain rings

Cassette Options

  •  CS-M5100-11
    • Compatible with standard HG FREEHUB body
    • 11-51T wide range cassette for 1x11
    • 11-42T Rhythm Step cassette for 1x11 or 2x11
  • CS-M4100-10
    • Compatible with standard HG freehub body
    • 11-46T wide range cassette for 1x10
    • 11-42T Rhythm Step cassette for 1x10 or 2x10

Brake Options

  • BL-M4100 non-series brake lever
    • Paired with existing BR-MT410 2-piston caliper to make an updated MT410 brake
    • Paired with existing BR-MT420 4-piston calipers to make an updated MT420 brake
    • New brake lever architecture
    • I-SPEC EV
  •  
  •