3T Ultra 2 Italia Review: An Aero Gravel Bike Built for Big Tires and Long Days

Introduction

3T has been building aero gravel bikes since 2016, when the original Exploro arrived and effectively created the category. The rest of the industry eventually caught up, and the Italian brand has kept evolving the idea rather than abandoning it. The 3T Ultra 2 Italia is the second generation of the Ultra, and it arrives with the most obvious upgrades a bike like this could ask for: far more tire clearance, a storage compartment built into the frame, and a frame manufactured in Italy.

The concept behind the bike is unchanged. An aero-shaped front end, a very deep down tube and dropped rear stays give it a silhouette that still looks more outlandish than almost anything else in gravel. What has changed is how broadly useful that shape has become, because the Ultra 2 now accommodates tires that would have been unthinkable on a gravel race bike a few seasons ago.

This is not a pure race machine and it is not a dedicated bikepacking rig. It is a deliberate attempt to sit between the two, and the geometry and the spec list both reflect that intent.

Who this product is for

The Ultra 2 Italia uses a more relaxed geometry than other bikes in the 3T range, with a higher stack and a shorter reach. That positions the rider more upright and is designed around long-distance comfort rather than a low, aggressive race position.

Riders stepping across from a cyclocross-style gravel bike will notice the difference immediately. The front end feels short and, at first, slightly cramped compared with quicker-handling machines of that type. For anyone riding for enjoyment, exploration and multi-day adventures rather than chasing a race number, that trade-off makes a great deal of sense. It is a fit that rewards time in the saddle rather than a fast start.

It also suits riders who want one bike to cover a wide range of ground: fast gravel, twisty woodland singletrack, rocky technical sections and loaded overnight trips, without changing frames between them.

Aero Speed and Big-Tire Handling

Tire clearance has grown from 46mm to 57mm on a 700c wheel. That is a substantial jump, and it changes what the bike can do. With 50mm tires fitted, there is still plenty of room left around the fork and rear stays, and mud has space to clear rather than pack up.

The aero design makes it quick. It feels fast everywhere, and the wide rubber unlocks more speed over rougher terrain and on more technical trails, the sort of tame mountain bike terrain that a lot of gravel routes quietly turn into. This is where the bike is at its best: it can be thrown through corners and carries speed through twisty sections better than many aero gravel race bikes, which tend to be tuned for straight-line hammering and feel less assured in the turns.

A suspension fork option is available, and the frame is suspension corrected, so a build can be specified for rough ground and long-distance smoothness from the start. A dropper seat post can be fitted instead of a round post, which makes sense on the same kind of terrain.

Comfort and Ride Quality

Ride quality is smooth, helped considerably by big-volume tires. A build with 50mm rubber absorbs a great deal of chatter before it ever reaches the rider, and the frame does not fight that comfort with a harsh rear end.

It is worth setting expectations honestly, though. The Ultra 2 Italia is not quite as plush as a Specialized Diverge with a Future Shock, or a Canyon Grizl with or without a suspension fork, even with a large tire fitted. What it does deliver is noticeably smoother ride feel than bikes such as the Wilier Rave SLR or the BMC Kaius, and roughly comparable overall comfort to an Argon 18 Dark Matter. For long days on mixed surfaces, that puts it comfortably on the civilised side of the aero gravel spectrum.

Frame, Storage and Build Details

The frame dominates the conversation, and not only because of its shape. It is made in Italy, part of a wider effort by 3T to bring carbon fiber manufacturing back from Asia. The process combines the brand’s own dry filament winding with more conventional molding for parts of the frame. Manufacturing in Italy is not cheap: a frame produced this way still costs roughly 20 to 25 percent more than an equivalent made in Asia, and that premium is visible in the final price.

The frame itself is around 1,200g. That is not a featherweight starting point, so a superlight build is not really on the table. In-frame storage sits in the down tube, which is generous enough to swallow tools, snacks and spare clothing. There are plenty of mounting points for bags and bottles, a bash guard where rocks are most likely to strike, and a front derailleur mount. That last detail is genuinely impressive given how much is packed into a narrow area around the chainstays and cranks.

Cable routing is semi-internal, which means the stem and handlebar can be swapped without a full rebuild of the cockpit. The frame also accepts mechanical groupsets as well as electronic ones, and it is compatible with a round seat post, a dropper post or a suspension fork depending on how the build is specified.

Things to consider before buying

There are real compromises here, and they are worth weighing before committing.

• Toe overlap is the most noticeable one. It shows up at low speed and is a consequence of fitting such large tires into a relatively short wheelbase. Once a rider knows about it, it is manageable, but it is a genuine consideration in tight, slow technical terrain.
• Only four sizes are offered, from small to extra large, which can make finding the right fit trickier than it would be with a broader size run.
• The frame weight of around 1,200g limits how light a complete build can realistically be.
• In-frame storage can rattle slightly when a heavy bottle is mounted in a cage nearby. It is not badly intrusive, but it is audible.
• The geometry will not suit everyone. Riders coming from a race-oriented position may find it too upright, and some may dismiss the platform as an older design that the rest of the market has since caught up with.

Buying advice

The range starts at around £4,500 with a Shimano GRX 12-speed mechanical groupset and aluminium wheels, and runs up to around £7,200 with either a Shimano GRX Di2 or a SRAM Rival group set. Upgraded 3T Discus wheels were fitted to the build used for testing here, and they are the kind of addition that makes sense if speed on mixed surfaces matters.

Value for money is where the Ultra 2 Italia has to be assessed carefully. Shopping around makes the premium obvious: a Canyon Grizl with a better electronic group set and the same DT Swiss suspension fork costs noticeably less, and comparable bikes from other brands undercut it as well. The most direct alternative is the Argon 18 Dark Matter, which shares the same tire clearance, in-frame storage, cargo mounts and suspension-corrected design and sells for around £3,500 with the same group set, though with carbon fiber wheels included. That is a very high-performance gravel bike in its own right.

What the 3T adds is the Italian manufacturing, a more distinctive aero silhouette and a ride character that blends race-bike speed with a relaxed, adventure-friendly position. If those priorities matter, the premium is easier to justify. If outright specification per pound is the deciding factor, the case is harder to make. Choosing the suspension fork option is worth serious thought, particularly for riders planning rough, loaded or multi-day routes.

Conclusion

The 3T Ultra 2 Italia is one of the more interesting answers to a question the gravel market is still working out: what happens when you combine aero speed with very large tires and long-distance comfort. It has the pace of an aero gravel race bike, the fit and handling manners of a more relaxed adventure machine, and a set of practical details that make it genuinely usable across a wide range of riding.

The case for it rests on handling, geometry, 57mm tire clearance, generous cargo mounts, in-frame storage and Italian manufacturing. The case against it rests on toe overlap, a four-size range, a frame that is not especially light, and a price that sits above several very capable rivals.

For riders who want a big-tire aero gravel bike for fast local trails, mixed-surface exploring and bikepacking adventures, and who value the Italian build enough to pay for it, this is a bike worth considering seriously. Riders who prioritise racing geometry or maximum specification per pound should look closely at the alternatives first.