Bike test: Sonder Colibri Al Tiagra road bike

A £1k road bike with a Tiagra drivetrain, a full carbon fork and practical features many rivals lack. Cycle magazine editor Dan Joyce put it to the test

Colibri is a pass in the Ecuadorean Andes. It’s gravelly in parts – like this endurance road bike named after it, which has a flared drop bar, extra frame fittings, wider (32mm) tyres with tread on the shoulders, and bigger clearances around those tyres.

Sonder’s marketing suggests it might be used for adventure racing. I’d say club riding, audaxes, sportives, fast commuting and maybe light touring or bikepacking. The aluminium frame and full-carbon fork will take tyres up 36mm – or 32mm with mudguards, for which there are mounts.

The head and seat tube angles are typical of a road bike yet it’s no wannabe racer. The head tube is taller. The bike is longer: longer chainstays; a longer top tube, which demands (and gets) a shorter stem; and more fork offset. There’s no toe overlap with my size 8s, even with a mudguard.

The Colibri’s wheels are tubeless compatible, although the WTB tyres aren’t. No matter: I’d soon replace them. There are fast road tyres available in 32mm now, such as Continental’s GP5000 S TR and Schwalbe’s Pro One TLE. Longer term, it would be tempting to upgrade the wheels as well. They’re not bad but, at £140 and 1,960g (stripped down) for the pair, they balance the budget better than the scales.

This mid-pandemic test bike had a couple of non-stock parts: a 105 front mech in place of Tiagra; and unbranded flatmount disc brakes rather than Tektro C550. It’s nice to see even Tiagra on a £1,000 disc-brake bike these days, although I’d want something lower than 34/32 if I were climbing an Andean pass with luggage, or even a Welsh one.

The brakes were adequate – once I’d fitted thin washers under the rear calliper so I could freely align it. Its mounts weren’t faced perfectly.

The Colibri is nice to ride, principally because it’s a sub-10kg bike that doesn’t tip you forward onto a low handlebar vibrated by carpel-tunnel-inducing skinny tyres. It could take you far, in comfort, on most roads. Just check the sizing. At 5ft 10in, the L was a better fit for me than the M.


A versatile and good value disc road bike. Its taller head tube, longer frame, and wider tyres let you enjoy rather than endure the miles. Some might take it bikepacking. I’d tweak the spec, swapping out the handlebar and tyres, and use it as a four-season club-ride bike.

Other options

Spa Cycles Steel Audax £1,125

Steel audax bike with carbon fork and 105 double or triple gears. Fits 28mm tyres with mudguards. Weight: ~10.2kg.

Cube Nuroad £999

Gravel bike with clearances for 40mm tyres and guards, full carbon fork, 2×8 Claris drivetrain, and Tektro C510 discs. Weight: 10.8kg.

First published in Cycle magazine, February/March 2022 issue. All information correct at time of publishing.

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Tech spec

Sonder Colibri Al Tiagra

Price: £899 (frameset £449)

Sizes: S-XL

Weight: 9.89kg/21.76lb (L, no pedals)

Frame & fork: Butted 6061 aluminium frame with 68mm BSA BB, 142×12mm dropouts, and fittings for rear rack, mudguard, 3 bottles. Carbon fork with tapered steerer, 100×12mm dropouts and mudguard fittings

Wheels: 32-66 WTB Expanse tyres, Sonder Nova I19 Aero Wheels (19mm internal width rims; 24×1 (f) and 28×2 (r) bladed SS spokes; Sonder Nova hubs)

Transmission: Shimano Tiagra 4700 chainset with 172.5mm cranks and 50-34t chainrings, Shimano BB52 bottom bracket, Shimano Tiagra HG500 10-speed 11-32 cassette. Shimano Tiagra 4700 shifters, 105 front mech, Tiagra 4700 GS rear. 20 ratios, 29-124in

Braking: Tiagra levers, unbranded flat mount callipers, 160mm 6-bolt rotors

Steering & seating: 31.8×400/460mm Sonder Spitfire bar, 85mm Sonder Storc stem, FSA Orbit C-40-ACB headset. Sonder Zone saddle, 27.2×400mm Sonder seatpost