Easton Gravel Wheels

Will They Fit? Axle Standards, Rotors, and Freehub Bodies

Before anything else, check the basics. Modern Easton AX wheelsets run 12x100mm front and 12x142mm rear thru-axle spacing - the current standard across virtually all gravel bikes, so fitment is rarely a problem unless you're running an older quick-release frame. Rotor mounts are Centerlock, which is clean, precise, and increasingly common, but if your rotors are 6-bolt you'll need an adapter. Worth grabbing one before the wheels arrive rather than discovering it in the car park ten minutes before a ride.

Freehub compatibility is where things get interesting. The Vault hub is offered with Shimano HG 11-speed, SRAM XDR 12-speed, and Campagnolo N3W bodies, so it covers most modern groupsets. The clever part - and this is genuinely useful - is that the tool-free end caps mean you can swap between freehub standards without digging out a cassette tool or heading to a workshop. If you're running two bikes on different drivetrains, or you upgrade your groupset down the line, you're not buying new wheels. All AX wheels also arrive pre-taped for tubeless with valves included, so setup is straightforward: mount your tubeless-compatible tyres, add sealant, and you're good.

Breaking Down the AX Lineup: Carbon vs Alloy

The EC90 AX sits at the top - a full carbon wheelset with a rim profile built for fast gravel and light bikepacking. The carbon layup is tuned for lateral stiffness without turning the ride into something punishing, and the weight saving is meaningful if you're racing or spending hours in the saddle. The EC70 AX steps things down slightly in rim specification but keeps the carbon construction and Vault hub, making it a more accessible entry point into the carbon tier. If you're comparing at this level, it's worth looking at what ENVE gravel wheels offer - ENVE sits above Easton on price and prestige, but the EC90 AX competes closely on stiffness and engagement speed.

The EA90 AX and EA70 AX use welded alloy rims. They're heavier, yes - but welded alloy takes impacts and trail abuse with considerably more forgiveness than carbon, and for year-round UK riding that's not a trivial point. The Peak District in January, the South Downs in November - these are not environments that are gentle on equipment. Alloy also makes more financial sense if you're running the wheels hard every week rather than saving them for race day. For those building a custom setup rather than buying a complete wheelset, our Easton rims page covers individual rim options separately. And if you need something with a narrower profile for road use, Easton road wheels are a better starting point than the AX series.

One thing both tiers share: the AX Series Rim Profiles are designed specifically around high-volume gravel tyres. That wider internal width - 24mm being typical - gives a 40mm tyre a properly rounded casing shape rather than the pinched, light-bulb profile you get on an older, narrower rim. On wet chalk on the South Downs or loose grit in the Dales, tyre shape at low pressure affects grip in ways you feel immediately. It's the kind of spec detail that sounds dry on paper but makes a tangible difference on the trail. When comparing alloy options, Hope gravel wheels are the obvious British-made alternative - exceptional hub quality, though rim profile options differ - and DT Swiss gravel wheels offer the ERC and GRC families if you want Swiss-engineered spoke tension as part of the equation. Easton uses Sapim spokes on its premium builds, which sit comfortably in that same tier of reliability.

Keeping Vault Hubs Running Through a UK Winter

The Vault hub's oversized shell isn't just a stiffness play - the larger bearing diameter means the bearings themselves sit under less stress per rotation, which extends service life. That matters more than it sounds when you're regularly riding through the kind of high-abrasion mud you get in the Peak District or the thick clay that clings to everything in the Chilterns from October onwards. Labyrinth seals on the Vault hub give a reasonable first line of defence against water and grit ingress, but they're not a substitute for regular maintenance.

If you're riding heavily through winter, check the freehub seal every three to four months. Water that gets past a worn seal and sits against the drive ring will accelerate corrosion quickly. The good news is the tool-free end caps make this genuinely easy - pop the cap, pull the freehub body, inspect the seal, re-grease the drive ring, and reassemble. Done in five minutes at the workbench rather than an hour at a workshop. The 60-tooth drive ring that gives the Vault hub its 3-degree engagement is also serviceable; if you notice any slipping under load, that's usually the first thing to inspect. A light application of grease on the contact faces keeps it running crisply. Pair these wheels with a solid bar setup - Easton's own Easton handlebars are worth a look if you're speccing a complete build - and think about Easton chainsets and cranks if you want to keep the whole drivetrain interface within the same engineering family.