Easton’s tubeless EA90 SLX is a great all-around road wheelset. When our US team tested it over the end of 2013 and start of 2014 it easily held up to some aggressive dirt-road riding and cyclocross racing under riders of up to 185lb/84kg without so much as losing a millimeter of trueness or burping any air.
Our UK testers at BikeRadar sister mag Cycling Plus have now also got their teeth into the EA90s and come away equally impressed with their performance on the road.
The original test set weighed 1,426g (623g front, 803g rear) against 1437g for our second batch – with a brace of quick-releases adding another 150g.
Highs: Light, strong, durable, wide rim, relatively easy to mount tubeless tires
Lows: Freehub needs oil overhaul to function smoothly in cold weather, cost
Buy if: You want a light but durable road tubeless wheelset
With an internal rim width as tested of 18mm (22.5mm externally), the EA90s offer a solid, wide stance. Perhaps more importantly, the rims seem to strike that nice balance of ease of installation and a solid, confident, tubeless seal.
There’s no need for a rim tape if running them with tubes, because the rim bed is completely sealed, and that’s a bonus in two ways. As well as permitting the fitting of tubeless tires, undrilled rim beds are much stronger and more rigid, creating a more responsive and durable wheel.
In the US, we tested Schwalbe One 25mm tires at everywhere from 70-110psi, and Hutchinson Piranha 2 cyclocross tubeless tires as low as 25psi without any burps or other issues.
For our 2015 UK test, we set our wheels up with a pair of Hutchinson Fusion 23mm tubeless tires and a dash of sealant. These tires required three metal core tire levers to coax the final portion of bead in to place, but the tires seated first time with a quick blast from a track pump.
Using Easton’s Echo rear hub with wide-set, angular contact bearings and an inverted driver-ring/pawl configuration – considerably increasing wheel stability and bearing durability – the rear wheel engages quickly under pedal load.
The easton ea90 slx echo rear hub has an inverted ring/pawl configuration: the easton ea90 slx echo rear hub has an inverted ring/pawl configurationBen Delaney/Future Publishing
The Easton EA90 SLX Echo rear hub has an inverted ring/pawl configuration
On the road – or wherever else you take them – the EA90s feel swift, lively and dependable. The 23mm Generation 5 rim design makes the most of the grip available, and the 25mm height is oblivious to wind and extremely nimble. Responsiveness is electric – you can feel the light weight when climbing or accelerating, but they are plenty stiff when you’re out of the saddle or cornering.
In terms of general durability, things have been reassuring. Despite somewhat rough care during our US test (read: power washing after ’cross races or muddy road rides), the hubs still moved silkily after months of use.
It’s worth mentioning though that the stock grease on the free hub is not cold-weather friendly. Riding in temps at or below freezing resulted in chainsuck. This can be easily remedied by adding oil to the grease, but we’d have preferred Easton use a slightly lighter viscosity free hub grease so riders don’t have to mess with it.
Two more things to note: the included valve stems don’t have a removable core, so sealant has to be added into the tire itself before mounting. And while the nipples are externally located and use industry-standard wrench flats for easy truing, they use an Easton-exclusive dual-threaded design that’s permanently paired with the spoke so finding replacements could be tricky.
As with all tubeless wheels, you are saving a bit of rotational weight by swapping tubes ( 120g) for sealant ( 30g a tire). Some argue that they can feel a smoother ride with road tubeless. But what we appreciate is the fact that flats are greatly reduced, as small punctures are quickly sealed. Yes, you will have to top off your air at some point, but that certainly beats immediately stopping to pull a tire and tube off a wheel, especially if you happy to be riding in cold, wet conditions.