If you intend on using Shimano's M9100 XTR or the recently released M8100 XT and M7100 SLX groupsets, then you might be aware that they require a special Micro Spline freehub body for their 12-speed cassettes. However, Shimano is only licensing it to selected partners, so where can you find a wheel or hub that'll work?
[Updated 4th June 2019]
We've emailed brands and manufacturers to find out just where you can find a complete Micro Spline wheelset or compatible hub and we've listed them all below. It's not a particularly long list, as unlike SRAM's XD freehub format, it's not an open standard and you have to license the design from Shimano - we presume that involves handing over money and/or agreeing to strict conditions about how you make it.
While Micro Spline was first introduced with the 12-speed M9100 XTR groupset, it's now trickled down to the new 12-speed M8100 XT and M7100 SLX groupsets and we expect to see it on even more groupsets in the future.
Shimano Micro Spline wheelsets
Shimano only offers complete Micro Spline wheelsets at M8100 XT level in both 650b and 29" sizes, both with Boost spacing and 15mm front and 12mm rear through axles.
The M8100 wheels are designed for cross-country, with a 24mm wide internal rim and 28 spokes. Claimed weight for the 650b wheelset is 1,746g and 1,840g for the 29".
The M8120 wheels are made for enduro, with a 30mm internal width and have 28 spokes too. Weights are claimed as 1,846g for the 650b wheelset and 1,932g for 29".
Shimano Micro Spline hubs
The FH-M9111-BS is an XTR level straight pull spoke hub that's available only in a 28H drilling, Centrelock disc mount and 148mm Boost width with 12mm axle, retailing at £245.
The FH-M9111-B (£235) is the same hub with traditional flanges, available in 28H and 32H drillings, 12x148mm Boost spacing and Centrelock disc mount and the FH-M9111 is the same hub in a 142mm spacing.
There are also a pair of more affordable non-XTR-series hubs, with the FH-MT901-BS (£150) being a 148mm Boost spaced straight pull spoke hub in 28H and the FH-MT901-B (£140) being the conventionally flanged version, available in 28H and 32H drillings. Both have Centrelock disc mounts and there is no non-series, non-Boost hub.
DT Swiss has a large number of wheelsets that can either come with a Micro Spline freehub installed or can have one retrofitted. The following wheelsets are either available with a Micro Spline freehub direct from the factory or can be converted to Micro Spline compatible with a separately available freehub body. It's worth noting that almost all of these use DT's Ratchet Drive style freehub, which is found on higher end wheels in the range.
- XRC 1200 SPLINE
- XR 1501 SPLINE ONE
- X 1700 SPLINE
- X 1900 SPLINE
- XMC 1200 SPLINE
- XM 1501 SPLINE ONE
- M 1700 SPLINE
- EX 1501 SPLINE ONE
- E 1700 SPLINE
- FR 1950 CLASSIC
As many other brand's wheelsets use DT Swiss internals, including ENVE, Bontrager, Syncros and many more, it's likely that this list is even bigger if you're willing to mix and match parts.
You can view the complete DT Swiss mountain wheel range here:
Industry Nine is one of very few worldwide and the only North American hub and wheel manufacturer to have licensed the design from Shimano. They currently offer it as an option on all of their complete mountain bike wheelsets, as listed below.
- Grade 300
- Enduro 310C
- Enduro 305
- Trail 270
- Ultralite 240C
- Ultralite 235
- Back Country 360
- Back Country 360C
- Back Country 450
- Trail S Hydra
- Enduro S Hydra
It's also possible to have a Micro Spline freehub as an option on the following Industry Nine hubs. The naming format should be fairly obvious; 6B stands for a six-bolt disc mount and CL for Centrelock.
- Hydra Classic Boost 6B Rear
- Hydra Classic Boost CL Rear
- Hydra Classic Non-Boost 6B Rear
- Hydra Classic Non-Boost CL Rear
- Hydra Classic DH150/157 6B Rear
- 101 Classic Boost 6B Rear
- 101 Classic Boost CL Rear
- 101 Classic Non-Boost 6B Rear
- 101 Classic Non-Boost CL Rear
You can also buy a Micro Spline freehub as a service component for any of their existing series of Torch hubs. You can check out the full range below.
French wheel brand Mavic has a huge variety of Micro Spline compatible wheelsets at a broad range of prices. We've listed them all below.
- XA 35
- XA ELITE
- XA PRO
- XA ELITE CARBON
- XA PRO CARBON 35
- CROSSMAX ELITE
- CROSSMAX PRO
- CROSSMAX ELITE CARBON
- CROSSMAX PRO CARBON
- DEEMAX DH
- DEEMAX ELITE
- DEEMAX PRO
They also have a number of e-bike specific versions of the above. For more information, head to their site.
German brand Newmen might be, well, fairly new to the world of bike components, but they have a number of mountain bike wheelsets using a hub that has Micro Spline compatibility. We've listed them all below; the number after the name indicates the internal rim width in centimetres.
- EVOLUTION X.A.25
- EVOLUTION A.30
- EVOLUTION A.35
All these wheels use the same Evolution Straightpull hub which uses a six-bolt brake mount plus 28H straight pull spokes and is available in 12x148mm and 12x142mm widths.
Hunt Bike Wheels
We spoke to Hunt and they had this to say: "Regarding Micro Spline, enquiries from our customers have been pretty much non-existent. We will keep an eye on this and if/when demand increases and licencing becomes available we are in a position to react quickly."
Hope had this to say: "We have been talking with Shimano ever since the new standard was announced. They stated that they would only offer it to OEM hub manufacturers and the hubs must be branded with the bike manufacturers name. They would not release the licence to aftermarket hub manufacturers.
"Looking at the wheels and hubs you have listed it seems that they are stating different rules to each manufacturer which is disappointing for us and our loyal customers.
"We’ll continue to lobby Shimano for the licence."
There are no Micro Spline compatible Chris King hubs currently available. We've reached out to Chris King to see if this is likely but are yet to have a reply.
We've asked Race Face if they plan to offer a Micro Spline hub and we'll update as and when we hear back from them.
White Industries doesn't have a Micro Spline license, but they do offer a Micro Spline compatible freehub body for their XMR hubsets.
We'll keep this article updated as new licensees are announced.
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