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I wish to divide gravel bikes into classes based mostly on what they’re constructed for, and I wish to do it now.
The exploding reputation of gravel has introduced extra folks than ever to the world of drop-bar bikes, from dyed-in-the-wool roadies to full-send mountain bikers, through new riders dipping their toe into using for the primary time.
Gravel riding has opened up new horizons for almost everybody – together with bike manufacturers eager to leap on the bandwagon, and which means we’re experiencing one thing of a bout of rising pains on the subject of the large vary of gravel bikes on the market.
Whereas mountain bikes have diversified into an ever-confusing quantity of sub-genres, as the game has developed into broad number of disciplines and sub-discipines, gravel bikes are sometimes lumped collectively as one class: gravel.
It’s time for the nice gravel divide to happen, to ascertain helpful – and that’s the important thing right here – sub-categories for riders attempting to navigate the large variety of choices on the market.
It’s one thing I’ve been vocal about up to now on the BikeRadar Podcast and over on our YouYube channel after I pitted two very completely different gravel bikes – the Surly Grappler and Scott Addict Gravel head-to-head.
Now it’s time to commit phrases to the web page, although, with my tackle the long run path of gravel categorisation.
However first, some gravel tech historical past
Again within the earliest proto-days of drop-bar, off-road using – and we may argue for days on the true origins of ‘gravel’ – essentially the most frequent dismissal was that gravel bikes had been both a) simply cyclocross bikes with rack fittings or b) simply ‘90s mountain bikes with drop handlebars.
In fact, ever because the earliest gravel-ready bikes, such because the Specialized Tricross (a cyclocross bike for the street or path) or Salsa’s Fargo, each from 2009, that very same argument has been rolling on.
Even when gravel turned extra established – initially beneath the affect of small-builders and customized thinkers – stand-out, landmark bikes from massive manufacturers, equivalent to GT’s original Grade in 2014, made issues much more complicated.
You see, GT had made a cutting-edge (for the time) gravel bike, however didn’t wish to name it that.
The model noticed it as extra of an all-roader or wide-tyred endurance bike; succesful in all places, on any floor. It took a while for bike manufacturers to decide to the concept of gravel, when endurance bikes had been beforehand all the craze.
Now gravel is totally established as a class, we will be nearly certain that’s the place the brand new Grade – due a while in 2023 – will pin its colors to the mast. However the place on the gravel spectrum will it sit?
A decade (or close to sufficient) is a very long time in bike tech and, within the years between 2014 and 2023, we’ve seen the gravel class change into totally established and, conversely, balloon to the purpose that two bikes will be classed as ‘gravel’ and supply very completely different qualities.
It’s time to reclassify gravel bikes
From the original endurance-inspired designs with the ability to carry luggage and fit cyclocross-sized tyres, to today’s spread of gravel bikes, ready to meet just about anyone’s particular peccadillo, we’ve come a long way.
However, while I love that there is so much diverse design in gravel right now, I also fear for new riders who want to try out what should be the most accessible form of drop-bar riding.
If you were coming fresh to gravel bikes and walked into a store with an array of gravel bikes, you could just as easily come out with the wrong bike as the right one.
It’d be akin to asking for a road bike and being given the option of a Trek Madone aero bike or a Genesis Tour de Fer tourer.
Or asking for a mountain bike and being given the option of a Cannondale Scalpel HT cross-country whippet or Giant’s new Glory downhill rig.
On the road, we have all-round race bikes, aero bikes, endurance bikes, touring bikes, TT bikes and, perhaps, specialist climbing bikes, at a push (that category has largely been swallowed up by racy all-rounders).
Mountain bikes, meanwhile, take things further, with downhill, enduro, cross-country, downcountry, trail, trials, slopestyle and possibly more.
What we need for gravel
While I don’t want to go down the exponential sub-genre separation that mountain bikers seem to enjoy, I do think we need four categories of gravel bike.
I’ve purposefully compounded some of the more diverse bikes into broader categories to stop things from getting out of hand.
Inevitably, there will be some crossover, too – particularly when brands offer a bike in builds specific to a type of riding. There’s no perfect separation here, but by re-categorising gravel, we’ll get a better idea of where each machine shines.
Let’s get down to business then. Here’s my manifesto for a new four-way split of gravel bike categories – and what to expect from bikes in each.
Gravel race bikes
Gravel race bikes are optimised for speed over rough terrain.
A gravel race bike can just as easily be focused on low weight (we’re looking at you, Specialized Crux) or, more likely, aerodynamics, with road-like riding positions and limited fixtures and fittings, compared to more adventure-targeted machines.
A lot of gravel race bikes will stick close to fast road bike geometry. They won’t deviate far from the traditional parallel 73-degree head and seat tube angles, and will have stack and reach numbers that pro riders won’t turn their noses up at.
Expect a slightly extended wheelbase to take into account larger tyre sizes, but that’s pretty much the only difference you’ll see glancing at a geometry table.
Builds will err towards close-ratio gearing; expect 2x Shimano GRX Di2, SRAM XPLR and Campagnolo Ekar with one of its tighter 13-speed cassette options. You’ll get 40mm tyres as a maximum – perhaps with additional clearance for 45mm – and handlebars that keep things narrow, ignoring the wide and flared trend for gravel handlebars, for a more aero-minded roadie position.
These bikes are all about speed for the fittest (and foolhardy).
Gravel race bikes reviewed by BikeRadar
All-road gravel
Is it a gravel bike or a modern take on the classic endurance bike? These bikes can muddy the waters to such an extent that they can, in theory, exist in both camps simultaneously.
You can expect to see a spec that’s similar to a gravel race bike, often with closer gear ratios and 2x drivetrains – in fact, some builds may use road components, instead of gravel-specific groupsets.
Here, the geometry is basically that of a modern endurance road bike, with a relatively long reach (for gravel) combined with a slightly taller stack, and fork trail that’s longer than a gravel race bike but still allows for fast on-road steering.
Versatility is the name of the game, although you might give up some off-road prowess on more technical terrain.
The Vitus Venon Evo, our Bike of the Year for 2023, is a good example here, with 45mm tyre clearance and a geometry that enables riders to switch between road and gravel. It’s even offered in road and gravel builds.
All-road gravel bikes reviewed by BikeRadar
Adventure gravel
This, in reality, is the busiest category – and where many riders will be looking to spend their money.
Adventure gravel bikes are designed to go both long and deep into the great outdoors.
Expect a wide range of fixtures and fittings (for bike bags and additional water bottle cages, for example), generous tyre clearance (45mm and beyond) and a more relaxed geometry that favours long-range comfort and off-road handling over straight-line speed.
The adventure gravel bike will borrow from both all-road and more extreme gravel in its geometry.
It’ll get a slacker head angle and more fork trail, stabilising the steering and settling down the handling for when you’re fully loaded with a week’s worth of luggage.
On that note, an adventure gravel bike is likely to have more mounting options than a racy or all-road gravel bike.
If you want to fit a bag to the top tube, a third water bottle under the down tube, and bags on the fork blades for a bikepacking trip, look out for the relevant mounts.
Adventure gravel bikes reviewed by BikeRadar
Extreme gravel
Mix off-road suspension with geometry that leans towards mountain bikes, rather than endurance road bikes, and you have the most progressive take on gravel.
Sometimes, the build kit can tip an adventure bike into extreme gravel – think of bikes such as the Giant Revolt X, with its suspension fork, mullet gearing and dropper post – but often these machines are built from the ground up to blur the lines between a drop-bar gravel bike and a mountain bike.
Geometry-wise, here we’ll see the biggest disparity between bikes, but the unifying factor is bringing a bit of mountain bike geometry into play. Think long front centre and a slacker head angle, combined with a short stem. It makes these bikes capable on descents and keeps the steering playful when the going gets technical.
On the flip side, they perhaps won’t climb with the prowess of a race, all-road or adventure gravel bike, but you’ll make up the time when the trail tips back downhill.
This category shows some of the most ‘extreme’ designs that drift a long way into mountain bike design territory. I’m talking about Evil’s Chamois Hagar, Nukeproof’s Digger RS and Rondo’s radical Mylc.
Extreme gravel bikes reviewed by BikeRadar
Bringing it back to the start
There you have it, my take on a much-needed evolution of gravel categories.
Ultimately, we won’t need to get all draconian on itemising gravel bikes – but, as you can see from the variety of bikes here, the difference in design is as wide as the Great Plains from the Mississippi to the Rockies that helped inspire a fair few of them.
Gravel riding can be all things to all people, but a little help from bike brands and the industry would go a long way to putting riders on the right bikes.
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