New Gravel Bikes and Upgrades Worth Watching: Time ADHX, 3T Explorer Ultra and Fox 32 Taper Cast

Introduction

The last few weeks have brought a cluster of new gravel hardware, and three of those releases say a lot about where the category is heading. The Time ADHX is a French-made gravel and all-road frame built with an unusual braided carbon process and a Dyneema reinforcement layer. The 3T Explorer Ultra responds directly to the tight tyre clearance of the model it follows. The Fox 32 Taper Cast is a ground-up redesign of an early gravel suspension fork that never quite worked. A new Cannondale Topstone Carbon also arrived in the same window.

Each of these products pulls the gravel formula in a slightly different direction. One prioritises frame durability, another tyre volume, and another adds suspension travel that the category did not previously offer. The sections below look at what changed, what it costs, and which rider each option genuinely suits.

What These New Gravel Releases Have in Common

The obvious shared theme is clearance. Frame clearance for tyres, clearance for mud, and clearance around a fork crown. Gravel bikes once stretched road geometry to accept a marginally wider tyre; this generation of frames and components is designed around the surfaces riders actually ride, including loose rock, roots and wet trails.

The second theme is specialisation. None of these products is trying to be a mountain bike, and none is trying to be a road bike with knobbly tyres. They sit in the middle ground deliberately, adding just enough capability without abandoning the efficiency that makes a gravel bike appealing on tarmac.

The third shared thread is cost. All three sit at the upper end of their respective categories, and in each case the price reflects either a specialist manufacturing process or a low-volume performance component. That does not make them poor value, but it does mean the buying decision should start from a real riding need rather than curiosity.

Time ADHX: Braided Carbon Built for Rough Gravel

Time is a French manufacturer that builds its frames in-house in France rather than outsourcing production, and it uses a construction method that differs from the norm. Instead of pressing flat sheets of carbon fibre into a mould, Time braids individual carbon strands into a sock-like sleeve that is drawn over wax moulds to form the frame. The result is a frame that looks and behaves unlike a conventional layup.

To make the ADHX robust enough for off-road use, where rocks and debris strike the frame, Time adds a Dyneema fabric layer. Dyneema is claimed to be the strongest fabric available and has appeared in cycling products before. Time says the material keeps weight low while increasing stiffness and strength, which is exactly the combination a gravel frame is chasing.

Frame weight is just over one kilogram. Typical gravel frames sit somewhere between 850 and 950 grams, so the ADHX gives up a little on the scale in exchange for what should be a tougher, more rugged structure.

Tyre clearance is where the bike narrows its focus. The ADHX accepts 40mm tyres on 700c rims, which is modest by current gravel standards, where many frames take 45 to 55mm. That positions it as an all-road or light gravel machine rather than a loaded off-road tourer. Practical details are strong elsewhere: accessory mounts on the top tube, compatibility with both 1x and 2x drivetrains, and a choice of fully internal cabling through an integrated handlebar and stem or a conventional bar and stem with external cables. In the UK the frameset is priced at just over £3,000.

3T Explorer Ultra: More Tyre Clearance, Still Aero

The Explorer Ultra takes the platform of the earlier race-focused model and addresses its most obvious weakness. The previous version was fast and impressive in design and performance, but its tyre and mud clearance fell short of rivals in the same sector because it prioritised aerodynamics.

The new frame changes that. 3T quotes a maximum tyre size of 61mm, though that figure applies to smaller 650b wheels, where the outer diameter of a 61mm tyre stays reasonable. On 700c rims the recommendation tops out at 46mm, which is still a substantial improvement. Riders running 42 or 44mm tyres should have real room for mud to pass through the frame and fork.

Reaching those numbers required changes to the frame itself. The fork blades are wider, the down tube is narrower by 10mm compared with the older version, dropping from 60mm to 50mm, and the rear of the frame is a little longer, which may take some edge off the handling.

The aero seat tube remains, but the seatpost is now a round 27.2mm diameter, which means a dropper post can be fitted if you want one. This is a useful detail for riders who mix in technical descents or loose, steep terrain.

Pricing puts the Explorer Ultra firmly in premium territory. A frameset costs around £3,000, roughly the same as the Time ADHX, and complete builds start from £5,700. One thing to note for riders drawn to suspension: this frame was not designed around a suspension fork, so adding one later is not part of the plan.

Fox 32 Taper Cast: Gravel Suspension, Rethought

Fox’s first gravel suspension fork was essentially a shortened mountain bike fork. It was heavy, it created crown clearance problems on some frames, and its damping never adapted well to such short travel. The 32 Taper Cast is a ground-up redesign rather than a refinement, and it is lighter, with more clearance around the crown and down tube.

Travel is offered in 40mm and 50mm options, which is more than the 30mm and 40mm range available on the competing gravel fork line. Inside there is an air spring and an oil damper, with external compression and rebound adjusters. Two damper options borrowed from mountain bike platforms are available, along with three tiers to suit different budgets and appetites for tuning.

The hardware has moved on from the earlier design as well. Where the first-generation fork used a 15mm through axle and a post mount brake adapter, the 32 Taper Cast uses a 12mm through axle and a flat mount caliper adapter for 160mm or 180mm rotors.

The sticking point is price. A gravel suspension fork at around £1,000 is a serious outlay, and the same money buys a suspension stem or a rigid carbon fork with plenty left over. The smarter route, if the idea appeals, is often a bike that already comes with the fork fitted, where the price premium over a rigid build is far smaller than the cost of buying the fork separately.

Is Suspension Worth It on a Gravel Bike?

This is one of the more interesting debates in gravel at the moment, and the honest answer is that it depends on where you ride. The counter-argument is straightforward: if you need suspension, you are drifting towards a hardtail mountain bike, and a mountain bike on the road feels slow in a way a gravel bike simply does not.

The case for suspension is about control rather than comfort alone. On tame gravel, forest doubletrack and fast open trails, a modest amount of travel smooths the surface, improves traction and reduces fatigue without giving up much speed. The appeal of a gravel bike is that it sits between two categories, and suspension can widen that middle ground rather than abandon it.

Travel choice matters here. 30mm felt well judged on the earlier fork that inspired this comparison, and 40mm may prove the sweet spot for most riders. Beyond that, the bike starts to move away from the simplicity and purity that make a gravel bike so easy to live with. Worth noting too: the 3T Explorer Ultra is not designed around a suspension fork, so if suspension is high on your list, frame choice comes first.

Buying Advice: Matching the Upgrade to Your Riding

Start with your terrain. If most of your riding is mixed surfaces with occasional rough sections, a lightweight frame with 40mm clearance such as the Time ADHX makes sense, and the Dyneema reinforcement offers extra confidence when stones and roots come at the frame. If your rides lean towards rough, loose and muddy ground, the 46mm clearance on 700c rims from the 3T Explorer Ultra, along with the option of a dropper post, is a more useful starting point.

If suspension is the specific thing you are missing, decide whether you want it built in or bolted on. Buying a fork separately means paying close to £1,000 for the component alone, whereas choosing a complete bike that already ships with a gravel suspension fork usually costs far less than that difference. Set your budget around the whole bike rather than the part, and the decision becomes much clearer.

Finally, be realistic about weight. Frames with heavier reinforcement, wide tyre setups and suspension forks all add mass. That is the trade for durability, grip and comfort, and it is a good trade for many riders. It is a poor trade if your priority is fast tarmac pace above everything else.

Conclusion

The Time ADHX, 3T Explorer Ultra and Fox 32 Taper Cast each solve a specific problem well. Time focuses on frame durability and a manufacturing method few brands can match, 3T corrects a real limitation in an otherwise quick bike, and Fox gives gravel riders a lighter, better-resolved suspension option with genuine travel choices. The right pick comes down to the terrain you ride most and whether you would rather change the bike or change the component.