Alex Gravel Wheels

Getting the Fitment Right

Before anything else, check your frame's axle spacing. Most modern gravel bikes run 12x100mm thru-axle up front and 12x142mm thru-axle at the rear - and Alex's current gravel range is built around these standards, so compatibility with recent frames is generally straightforward. Older quick-release setups are a different story, so worth double-checking if you're running an older steel or alloy frame.

Rotor mounting is the next question. Alex gravel wheels are available in both centerlock disc and 6-bolt configurations depending on the model. Centerlock is the cleaner system and plays nicely with Shimano's rotor lineup, but if your existing rotors are 6-bolt, make sure you're buying accordingly - an adaptor works in a pinch but it's not ideal long-term.

Cassette compatibility matters too. Most Alex gravel wheels ship with a Shimano HG freehub as standard, which covers the majority of 10, 11, and 12-speed Shimano and compatible groupsets. Running SRAM? You'll want to confirm XDR compatibility before ordering. For everything related to swapping bodies or sourcing spares, the Alex Freehub Bodies & Spares and Alex Hubs categories are the right place to go - that's a whole separate conversation.

The Wheel Hierarchy: What the Money Buys

Alex's gravel range stacks up in a fairly logical way. The Boondocks 3 sits at the accessible end - a workhorse alloy wheelset with a 21mm internal rim width, solid sleeve joint construction for rim strength, and TRS bead retention for tubeless use. It's the wheel you trust to survive a loaded bikepacking loop in the Cairngorms without drama. Not the lightest thing you'll ever lift, but that's the trade-off for the price point.

Step up to the Boondocks 7 and you're getting the full EXA alloy treatment - higher strength-to-weight ratio, better quality sealed bearings, and noticeably faster freehub engagement that makes a real difference on technical descents where you're picking lines quickly. The internal rim width also widens to around 23mm, which properly supports 40c and above gravel tyres for that more stable, planted feel at lower pressures. That's worth having on wet chalk or loose shale where tyre behaviour really counts.

The CXD series is where things get more performance-focused - slimmer profile, optimised for 700c and cross-influenced riding, useful if your gravel rides tend toward faster, more road-adjacent routes rather than full adventure loading. Riders who want something between Alex and a pricier option might also consider Halo or Fulcrum at a similar price bracket - but Alex's OEM pedigree gives it a specific credibility in the durability stakes.

So the honest answer to which model suits you: if you're bikepacking or riding rough mixed surfaces regularly, the Boondocks 7's wider internal width and better bearing quality justify the step up. If you're mostly on softer gravel and bridleways with occasional harder going, the Boondocks 3 is more than capable.

Keeping Them Running Through a UK Winter

UK conditions are genuinely hard on wheels. The grinding paste that forms from winter grit and wet roads works into bearings faster than you'd expect, and the sealed cartridge bearings in Alex's gravel wheels are one of the better defences against this - they resist contamination well and are straightforward to replace when they eventually need it. Even so, it's worth pulling the wheels out and wiping the hub shells down after particularly muddy or salty rides rather than leaving them to fester.

Spoke tension is the other thing worth keeping an eye on. Give the wheels 100 miles of rough riding - particularly if they're new - and check for any loosening. The sleeve joint construction in the rim helps maintain structural integrity, but spoke tension still settles with use. A quick squeeze check at a dozen points around the wheel tells you quickly if anything's gone soft; a professional tension check with a spoke key costs little at a local shop and saves you from a buckle on a fast descent on the South Downs.

On the tubeless front, Alex's TRS is genuinely effective at holding a secure bead - particularly useful when you're running lower pressures on wet roots or loose chalk. That secure retention means fewer burps mid-ride. For the full setup - rim tape, valves, sealant - head over to Alex Tubeless Kits where everything's matched to these rims. Getting the right tape width matters more than people realise, and using Alex's own kit removes the guesswork.

One practical point: if you're planning a loaded trip and running 650b Alex wheels with high-volume tyres, drop tyre pressure gradually on the trail rather than setting it low from the car park. Bead retention on the TRS system is good, but pushing the limits on the first ride with new sealant still curing isn't the moment to experiment.