Like this site? Help us to make it better.


Just in: Claud Butler Alto CX9

£699 aluminium disc-equipped cyclo-cross bike gets the once-over

The cyco-cross season is in full swing and we’ve just received this Claud Butler Alto CX9 with the intention of having some fun in the woods and mixing it up through the winter. It costs £699 and comes with a Shimano Claris 2400 groupset and Avid BB5 mechanical disc brakes.

The Alto CX9 features an 6061 aluminium frame and it’s smartly detailed, with the rear derailleur cable routed along the top tube and the rest slung along the underside of the down tube, with a run of full outer casing to protect from dirt and mud. The top tube has a flattened underside, a typical feature of cyclo-cross frames, and is intended to prevent the top tube digging into your shoulder when the terrain, or obstacles, force you to dismount and sling the bike over your shoulder.

At the front we find a carbon fibre fork slotted into the non-tapered head tube, and a generous stack of spacers beneath the stem provides a bit of height adjustment. Interestingly the fork features redundant cantilever brake mounts, our best guess is that it's largely the same fork as is used on the non-disc cyclo-cross bike in Claud Butler's range. A shame they couldn't have removed those to clean up the lines on this disc-equipped model. There are regular quick release skewers at both wheels.

It’s a purposeful looking bike and has the versatility someone might seek in this sort of bike, for there are rack and mudguard mounts should you want to run it as a touring or daily commuting bike. The Kenda Kwick CX tyres are 30mm wide and the tread pattern should see the working well on a range of surfaces, but obviously with a large bias to churning through mud and soggy grass.

Disc brakes make perfect sense on a ‘cross bike, and the Alto CX9 is fitted with the very excellent Avid BB5 disc brakes. They’re mechanical and are operated by the Shimano 2400 Claris brake levers, which also operate the Claris front and rear mechs. There are also a second set of brake levers attached to the centre of the handlebars, which allow you to operate the brakes not just from the drops, but from the tops, which can be very useful on rough and bumpy terrain.

The Claris theme is continued with the chainset, in a cyclocross-friendly 46/34t ratio - it’s a lower gearing than most road-specific chainsets with the purpose of providing easier ratios when riding off-road in the mud and often up much steeper hills than you’ll find surfaced.  It’s an 8-speed groupset with a 11-28t cassette.

Wheels are 32-hole hole disc-specific hubs laced to double wall aluminium rims, with those Kenda tyres we mentioned earlier. All the finishing kit, by which we mean the handlebars, stem, seatpost and saddle, are Exile branded, and while not flashy looks dependable for the money. On the scales the Alto CX9 weighs 10.9kg (24lb).

It does look like it’s ready to race, so perfect if you want to give cyclo-cross racing a go, or hit the trail if you’re seeking to have some fun, but equally it looks like a change of tyres and the addition of some mudguards would turn it into a really good winter training bike, or one for daily commuting. Keep those treaded tyres on and it’s ideal for exploring some local bridleways and paths to spice up your weekend road ride.

We’re going to get the Alto out on the road and the trail in the coming weeks and we’ll report back soon. 

The Alto CX9 is available in three sizes and costs £699. More at

What else might you consider for similar money? Well for a start there's the Pinnacle Arkose One. It costs £700 and has an aluminium frame with triple butted tubes and a carbon fibre fork, but manages to offer the better Shimano Sora groupset with Tektro Mira mechanical disc brakes FSA Omega compact chainset - which suggests it's targeted more at road cycling than going off-road or cyclo-cross racing.

For another £71 on top of the Alto's £699, you might consider the Specialized Diverge. This is a new bike from Specialized, and looks to blend key attributes from a road bike and cyclo-cross bike into one package, compared to the Alto's clear cyclo-cross racing roots. The Diverge gets the same Claris parts package with teh very good Tektro Spyre mechanical disc brakes and Specialized Espoir 30mm tyres. 

For a few hundred pounds more there's Cannondale CAADX Tiagra Disc with slightly better components and a similar aluminium frame, carbon fork and mechanical disc brakes. 

David worked on the tech team from 2012-2020. Previously he was editor of and before that staff writer at RCUK. He's a seasoned cyclist of all disciplines, from road to mountain biking, touring to cyclo-cross, he only wishes he had time to ride them all. He's mildly competitive, though he'll never admit it, and is a frequent road racer but is too lazy to do really well. He currently resides in the Cotswolds, and you can now find him over on his own YouTube channel David Arthur - Just Ride Bikes

Add new comment


Airzound | 9 years ago

That is one ugly agricultural looking bike frame. Looks like it has been knocked up in a garden shed ………..  21

Colin Peyresourde | 9 years ago

Hmmm. Relaxed geometry: good if you're getting into cycling, not so great if you like going fast. Always seems like a fudge to me.

james-o | 9 years ago

Sorry to be a pedant David.. Arkose isn't really more road-orientated, more all-round, 50-50. I don't use the outer so much when it gets steep or really muddy, whether 46 or 50T. For those that fit a 28c for winter road miles I think the 50T is good and 11-32 keeps it feeling on the low side.

harrybav | 9 years ago

Nice that these bikes all have a 32 cassette on them, v practical.

Forester | 9 years ago

Genesis CdA 10 at same price is a much better looking bike; have done 1000km of enjoyable Winter riding on mine and hard to fault at the price.

Latest Comments