Shimano’s Deore 10 and 11-speed groups will bring your old bike up to speed

New wider 1x and 2x gearing options to keep you rolling with minimal investment

Gear News Tech
New, wider 1x and 2x gearing options to keep you rolling with minimal investment.

New, wider 1x and 2x gearing options to keep you rolling with minimal investment.

Shimano’s M6100 Deore is the big news today from the component manufacturer, but alongside the release of this value-packed 12-speed group are additions to 10- and 11-speed mountain bike drivetrains that will allow riders to expand the range of their existing drivetrains with minimal investment. Here’s a rundown of the stand out parts as well as component compatibility between them.

Related: The Best Mountain Bikes Under $1000 for 2020

What’s the difference between Deore M6100, M5100 and M4100?

Shimano 12-speed Deore group is a great addition, but Shimano hasn’t forgotten about riders on 10 and 11-speed systems.

Shimano’s M6100 is an entirely new group that features many of the same technologies and component standards as XTR, XT and SLX. It is a dedicated 1×12 group with a 10-51t cassette that requires Shimano’s Micro Spline freehub body.

Related: Shimano Deore M6100 12-speed: Everything you need to know

In contrast, the 11-speed M5100 and 10-speed M4100 lines of components aren’t complete groupsets, but rather, a series of components intended to update existing drivetrains. They will also offer more gearing options for entry-level mountain bikes in the coming years.

Think of M5100 and M4100 has hardware updates for your bike.

Shimano M6100, M5100, M4100 Component Compatibility

Shimano Deore M5100

Shimano's 11 speed 11-51 cassette opens up possibilities for 1x11 drivetrains.

Shimano’s 11 speed 11-51 cassette opens up possibilities for 1×11 drivetrains

Shimano’s Deore M5100 line includes new shifters, redesigned 11-speed rear derailleur and a new 11-51t cassette that is compatible with Shimano’s longstanding HG freehub body. Riders who prefer doubles can benefit from the new, wider-range 11-42t cassette.

Shimano hasn't abandoned 2x drivetrains.

Shimano hasn’t abandoned 2x drivetrains.

The FC-M5100 crankset is compatible with single or double chainring 10 and 11-speed drivetrains. The 1x version is offered with 30 and 32t chainrings, while the double comes with 36/22t chainrings.

This group also sees the addition of I-SPEC EV to the components in order to create a better-integrated cockpit with the company’s higher-end components.

Shimano Deore M4100

1x10 drivetrains have never looked better.

1×10 drivetrains have never looked better.

Where the M5100 line address updates to 11-speed drivetrains, the M4100 group serves to update 10-speed systems with a new shifter, cassette and derailleur options.

This 10-speed 11-46t cassette outgears the original 11-42t 11-speed cassettes.

This 10-speed 11-46t cassette out-gears the original 11-42t 11-speed cassettes.

The 11-46t cassette makes 1×10 speed systems more reasonable for many riders. As with the 11-speed updates, Shimano is offering a 10speed cassette with a wider, 11-42t range for 2x drivetrains.

As with M5100, this group also sees the addition of I-SPEC EV to the components in order to create a better-integrated cockpit.

Compatibility between M5100 and M4100

This clutch-equipped rear derailleur works with 10 and 11-speed systems with 1x and 2x drivetrains.

This clutch-equipped rear derailleur works with 10 and 11-speed systems with 1x and 2x drivetrains.

 As mentioned above, the FC-M5100 crankset is compatible with both 10 and 11-speed drivetrains.

In addition to having a dedicated 1×11 rear derailleur in the M5100 line, Shimano has also added the RD-M5120 model which is compatible with both 10 and 11-speed systems for use with 1x and 2x drivetrains (with a maximum cog size of 46t.) This new derailleur features Shimano’s Shadow RD+ system which a clutch mechanism to maintain tension on the chain in order to improve chain retention and shift performance.

As price goes down, so do features. The RD-M4120 gives up the Shadow+ tech used to stabilize the chain.

As price goes down, so do features. The RD-M4120 gives up the Shadow+ tech used to stabilize the chain.

Below this derailleur is the RD-M4120. This model is also compatible with 10 and 11-speed systems but lacks the Shimano’s chain retention technology. We recommend sticking with the model up for serious riding.

 


About the author: Josh Patterson

Josh has been riding and racing mountain bikes since 1998, and has been writing about mountain biking and cyclocross since 2006. He was also at the forefront of the gravel cycling movement, and is a multi-time finisher of Dirty Kanza. These days, Josh spends most of this time riding the rocky trails and exploring the lonely gravel roads around his home in Fort Collins, Colorado.


Related Articles


Comments:

  • Olaf says:

    I only see a 36-26 chainring option for this crankset on the Shimano website.

  • JS says:

    The release of these new drivetrain options has been announced on several cycling websites but no word on when these parts are supposed to be available. COVID 19 could impact availability but it would be nice to have some sort of target time frame for when people could actually purchase.

  • IzzyM says:

    Any info on the sprocket gearing on the 11-speed 11-51t (CSM5100)?
    I hate that not even Shimano have this info on their website.

  • Rex says:

    Does anyone know if you could use the Deore M5100 11 speed shifter with the XT Mech? I can’t see any reason why not….

  • Fritz says:

    Thanks for the info. Just a quick few questions, if I will be on a 1×10 setup, do I really need the RD-M5120 and the M4100-46T cogs? Or I can get along with the RD-4120 with M4100-46T cogs? Or is it just fine with the RD-4120 with M4100-42T cogs? Thank you!

  • LuckyLuke says:

    Anyone know if the rd-m5100 will also work on a 1×10 setup? If the 5120 is listed as both 10 and 11v it seems like it should be fine – and future ready…. Anyone… Bueller?

Leave a Reply

Your email address will not be published. Required fields are marked *

*
*


THE SITE

ABOUT MTBR

VISIT US AT

© Copyright 2020 VerticalScope Inc. All rights reserved.