Easton EA90 SL Disc wheelset goes wide for road or cyclocross

Broad-profile alloy rims are made for easy tubeless compatibility

Is wider better when it comes to bicycle rims? Easton certainly thinks so, and its new EA90 SL Disc wheels continue the company’s recent trend toward broader profiles and easy tubeless compatibility.

The new rims measure a modest 27mm in depth but a whopping 19.5mm in between the bead hooks. As compared to more traditional rims – which can be as much as 6.5mm narrower – this spreads out the tire casing and creates more air volume for a smoother ride, better grip, and fewer pinch flats.

Related: Fast Forward release disc-ready wheels

There's no need for a machined brake track on the ea90 sl disc wheels so easton uses a sleek all-black finish on the rims: there's no need for a machined brake track on the ea90 sl disc wheels so easton uses a sleek all-black finish on the rims
There's no need for a machined brake track on the ea90 sl disc wheels so easton uses a sleek all-black finish on the rims: there's no need for a machined brake track on the ea90 sl disc wheels so easton uses a sleek all-black finish on the rims

The wide-profile rims plump out any tire as compared to a more traditionally sized rim

Furthering the fight against flats is the rim’s tubeless compatibility with pre-installed airtight tape and included valve stems. As always, you can run standard tubes if you wish, too.

Those rims are built around Easton’s long-running M1 hubs, which feature oversized bearings and axles, easy conversion between quick-release and thru-axle frame fittings, compatibility with the latest 11-speed cassettes, and common six-bolt disc rotor interfaces. Past bearing durability issues that plagued older M1 hubs have supposedly been solved with the latest revisions – but if you’d still rather build the rims around your own hubs, Easton will also offer the 455g R90 SL Disc rims separately.

Related: New disc-ready wheels from 3T

Easton builds the ea90 sl disc wheels around its long-running m1 hubset. past bearing issues have supposedly been squelched with the revisions instituted in 2013: easton builds the ea90 sl disc wheels around its long-running m1 hubset. past bearing issues have supposedly been squelched with the revisions instituted in 2013
Easton builds the ea90 sl disc wheels around its long-running m1 hubset. past bearing issues have supposedly been squelched with the revisions instituted in 2013: easton builds the ea90 sl disc wheels around its long-running m1 hubset. past bearing issues have supposedly been squelched with the revisions instituted in 2013

Easton builds the EA90 SL Disc around its long-running M1 hubset

Actual weight for our test set is 1,562g (689g front, 873g rear, thru-axle, pre-taped with valve stems) – spot-on with the claimed figures. Suggested retail price is $950 / £900 / €1180 / AU$TBC.

James Huang

Technical Editor, US
James started as a roadie in 1990 with his high school team but switched to dirt in 1994 and has enjoyed both ever since. Anything that comes through his hands is bound to be taken apart, and those hands still sometimes smell like fork oil even though he retired from shop life in 2007. He prefers manual over automatic, fizzy over still, and the right way over the easy way.
  • Discipline: Mountain, road, cyclocross
  • Preferred Terrain: Up in the Colorado high-country where the singletrack is still single, the dirt is still brown, and the aspens are in full bloom. Also, those perfect stretches of pavement where the road snakes across the mountainside like an artist's paintbrush.
  • Beer of Choice: Mexican Coke
  • Location: Boulder, Colorado, USA

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