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Just in: B’Twin’s £1,000 Mach 720

Hands on with B'Twin's £1,000 carbon fibre road bike with a Shimano 105 groupset

With a UCI approved carbon fibre frameset and a Shimano 105 groupset, B’Twin’s Mach 720 is a very good looking bike for £1,000. It's just arrived in the office and before it hits the road, here's a first look.

B’Twin might be best known for its range of affordable Triban models that have been responsible for getting many people into cycling, but the company also produces a range of smartly designed and very well equipped carbon fibre road bikes. Its offering is split between two model lines, the Ultra at the top, and this more affordable Mach.

The Mach frame, now in its third generation, was developed with, and is raced by, B’Twin’s under-19 racing team. B’Twin has constructed the frame by taking a similar approach to other manufacturers, in that has has split the frame into two halves. Not literally; the lower half, the ‘Dynamic Structure’ comprising the forks, steerer tube, down tube, bottom bracket and chainstays, are oversized to provide stiffness, while the top tube, seat tube and seat stays form the ‘Supporting Structure’ and are designed to provide vibration damping qualities.

It’s without doubt the most angular looking frame we’ve had in for test. B’Twin says the purpose of the angular design language is to provide “extreme rigidity when flexed.” There's lots of oversizing, of course, the down tube is huge, 57mm in diameter at the tapered head tube and 60mm at the bottom bracket. In contrast, the seat stays are small profile to provide smoothness, and the company reckons the kinks “enable micro-deformations and therefore better vibration filtering.”

A standout feature is the extended seat tube. B’Twin says this approach means that regardless of seatpost height, the ability of the seat tube/seat stay/top tube junction to provide the necessary flex for a smooth ride won't be impinged upon. There are modern details like internal cable routing, a tapered head tube and the dropouts are moulded from carbon fibre. And not very modern details like the external threaded bottom bracket. That'll please home mechanics as this type of bottom bracket is easier to change and is less prone to creaking.

B’Twin claims a 1,150g weight for a size 55cm frame, and 320g for the fork. The frame uses a geometry that B’Twin has been using on its Performance bikes for the past decade, and was originally developed with a ‘professional ergonomics laboratory’. What that means in reality is the 53cm bike we have in for testing has a 550mm top tube with a 119mm head tube, 985mm wheelbase and 73 degree head angle and 74 degree seat angle. Those are very racy numbers indeed. B’Twin offers six sizes from 51 through to 61cm.

This Mach 720 model is built with a Shimano 105 11-speed groupset, with a 52/36t semi-compact non-series Shimano chainset and an 11-28t cassette. B’Twin has used its own brand components everywhere else, including its own dual pivot brake calipers and wheels, which feature an aero shaped 24mm deep aluminium rim and have a 1,760g claimed weight. They are fitted with 23mm Hutchinson Equinox tyres.

Completing the build is B’Twin’s own aluminum handlebar with a shallow drop, matching stem, seatpost and saddle. The bar tape is worth a mention because they have fitted bolt-in bar end plugs, a very nice detail that because it prevents the plugs from falling out which can happen if they’re not fitted properly.

The Mach 720 weighs 8.8kg (19.4lb) for the size 53 we have here.

The £1,000 price point is a fiercely competitive and there are a lot of very good bikes to choose from. Aluminium is still the most common material at this price, but there are several carbon fibre bikes on offer. The main drawback with a carbon bike at this price is the downgraded components compared to an aluminum bike, to account for the higher cost tied up in the carbon frame. An aluminium bike still looks to offer the best value at this price, but it’s impressive that B’Twin manages to offer such a well equipped carbon bike for a grand.

The B’Twin Mach 720 looks to offer few concessions and is very impressively equipped. Now it’s just a case of getting it out on the road and see if the performance stacks up as well as it does on paper. Find out more at www.decathlon.co.uk

To get an idea of what else you can get for about the same money, check out our Best Road Bikes Under £1,000 and 10 of the best £1,000 to £1,500 road bikes.

David worked on the road.cc tech team from 2012-2020. Previously he was editor of Bikemagic.com 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

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10 comments

Avatar
crikey | 8 years ago
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Man alive, that is one fugly bike

Quote:

It's a little bit... Picasso?

Quote:

It could look better

Are you going to ride it or take it home to meet your mother?

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Discospinner | 8 years ago
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It could look better but I wouldn't go so far as to say it's ugly. I'm very seriously considering it.

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tobciocc | 8 years ago
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I honestly think it looks great. Can't understand the issue with the brand either. These bikes are raced in France by the Btwin team.

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MKultra | 8 years ago
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I don't think it's ugly I just think it's got the wrong name tag on it. If you stuck another logo on it most people would be fawning all over it. I like the extended seat tube as more than anything it stops people purchasing the wrong size frame online or in person. It's going to be obvious if you have gone for the wrong size. This happens more than you think, I have seen many a newbie on a piper alpha frame that some shop has sold them with the seat pin all the way down just to reach the pedals.

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Exup | 8 years ago
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I bought a Mach 700 for less than £700 on the spare of the moment a few months ago. I have changed the wheels (Campy Zondas), tyres (GP4000) and cassette (11-25 Ultegra) and I am impressed with the end result. I have a few other big name bikes costing many times more with top end kit -SRAM Red, 850g frame, etc to compare against. This BTwin may not quite match them, but it is reasonably light (7.8ish kg), responsive, gives a good ride and seems to be of respectable build quality.
Best of all is that the label brigade turn their noses up at the badge, which gives me lots of amusement; the fact that often their bikes are way above their own riding ability, is never mentioned of course  13

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tobciocc | 8 years ago
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I bought one of these on the cyclescheme, had it for 3 months now and I think its amazing. For the money I don't think you can beat it. Lighter wheels and I'd be happy to race it.

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bikebot | 8 years ago
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It's a little bit... Picasso?

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andrewball | 8 years ago
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if we're after a bargain, try costco;
http://www.costco.co.uk/view/product/uk_catalog/cos_5,cos_5.3,cos_5.3.1/...
gets you an 'etape' carbon 105 equiped bike for £850. I'd buy neither but if we're looking for value, carrying 105 is a very good start

Avatar
Chasseur Patate replied to andrewball | 8 years ago
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andyjball wrote:

if we're after a bargain, try costco;
http://www.costco.co.uk/view/product/uk_catalog/cos_5,cos_5.3,cos_5.3.1/...
gets you an 'etape' carbon 105 equiped bike for £850. I'd buy neither but if we're looking for value, carrying 105 is a very good start

Not sure the point you're trying to make. The Btwin does have 105, in 11 speed guise. The Costco bike has previous gen 105 10 speed.

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amazon22 | 8 years ago
0 likes

Man alive, that is one fugly bike.

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