Colibri Al Tiagra

Photos for illustration purposes. Please check the bike spec for detailed component listings.

Colibri Al Tiagra

Aluminium disc brake endurance road bike


Feel fresher for longer. Colibri's modern performance geometry is tuned in for all-day riding comfort and speed on Britain’s varied road surfaces. Colibri Al is for Alpine adventures, exploring new roads, riding in the summer and for riding through the winter, where you’ll get out, no matter what the weather’s doing. It’s the bike for every day of the year.

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Orderbook opens March for delivery in September.


Light, fast, responsive and smooth. Really smooth. The Colibri Al glides up long climbs and it’s an assured and confident descender. Quick when you want it to be, relaxed and easy to pilot when you want to take it easy. It’ll take up to 36mm tyres or 32mm with mudguards. And talking of guards, there are all the mounts you need for guards and racks, which means this really is a bike you can ride every day of the year. And love it.

A 4 season endurance road bike, Colibri Al takes on all road conditions making it ideal for the Fred Whitton or the mountain climbs of the Tour de France. This is the bike for Galibier, Ventoux, Glandon, Alpe d’Huez, Bealach Na Ba, Bwlch-y-Groes, Hardnott, the list is endless.


6061 Double Butted Aluminium Frame

Lightweight, strong and durable aluminium frame with extra-light carbon monocoque fork

Internal cable routing

Internal routing in the front triangle means tidy cables, clean lines, and reduced potential for cable snags.

Tapered headtube

Tapered steerer and headtube gives more precise cornering and increases feedback when riding.

Tyre clearance

Clearance for up to 36 mm tyres, or 32 mm with mud guards

Forgiving angles

A longer wheel base promotes comfort and confidence on the downhills.

Build Spec
BuildColibri Al Tiagra
Frame:Sonder Colibri Al Frame
Fork:Sonder Colibri Al Fork
Headset:FSA Orbit C-40-ACB Headset / 7.8mm Spacer
Group Set
Left Brake:Shimano Tiagra [R4700] Shifters / Mechanical / Left / 2x
Right Brake:Shimano Tiagra [R4700] Shifters / Mechanical / Right / 10x
Calipers:Tektro C-550 Flat Mount Calipers
Rotors:Tektro Rotor / 6 Bolt / 160mm
Rear Mech:Shimano Tiagra [R4700] Rear Derailleur / GS
Chainset:Shimano Tiagra [R4700] Crankset / 172.5mm / 50-34t
Bottom Bracket:Shimano RS500 Bottom Bracket
Chain:Shimano CN4601 Chain / 10 / 118l
Cassette:Shimano HG500 Cassette / 10 / 11-32t
Finishing Kit
Stem:Love Mud Storc 31.8mm / 80mm
Seatpost:Sonder Membar / 27.2mm / 400mm
Saddle:Sonder Abode / Black
Tape/Grips:Love Mud Reels / Black
Handlebar:Sonder Spitfire / 420mm
Wheels:Sonder Nova I19 Aero Wheelset / HG
Tyres:WTB Expanse / Comp / 32 / Black
Tubes:WTB Inner Tube / 700 / 28-38
Frame:S: 1.73 kg; M: 1.75 kg; L: 1.84 kg; XL: 1.92 kg
Fork (uncut):0.55 kg
Pedals not included with full builds
Geometry and Sizing


Generally we recommend:
Riders between 5ft 2in and 5ft 7in
Riders between 5ft 6in and 5ft 10in
Riders between 5ft 9in and 6ft 2in
Riders 6ft 2in and over
You can also take into consideration the standover height to ensure you pick a bike that will be a good fit. If you measure your inside leg and ensure there is a minimum of an inch from the toptube to your crotch this will give you enough seatpost adjustment to find your optimum saddle height.
Size Small Medium Large X-Large
ST-Seattube 460 500 540 580
TT-Toptube 532 554 571 582
HT-Headtube 120 145 170 190
HA-Headangle 72 72 72.5 72.5
SA-Seatangle 73.5 73.5 73.5 73.5
CS-Chainstay 420 420 420 420
BB-BBdrop 70 70 70 70
FO-Forkoffset 50 50 50 50
WB-Wheelbase 991 1014 1027 1038
SO-Standover 723 754 785 815
RE-Reach 375 390 400 405
SK-Stack 530 554 580 599
Frame Spec
Lightweight, strong and durable aluminium frame.
Frame weight: S: 1.35kg; M: 1.53kg; L: 1.7kg; 1.9kg
Fork weight - uncut: 460g
6061 Double butted Aluminium frame
Monocoque Carbon Fork with mudguard and cage mounts
Seat Post: ø 27.2 mm
Headtube: 1-1/8” – 1-1/2” Tapered
Spacing: Bolt-Thru 12 x 142 mm
Bottom Bracket: 68 mm BSA Threaded
Full internal cable routing
Front derailleur type: Clamp-on 31.8 mm
Flat mount disc brake only Rear mud guard and pannier rack mounts
Cycling Plus Award Colibri Bike of the Year 2020

The winning package of versatility, accessible price, value for money and longevity deservedly goes to the Sonder Colibri, a bike that I found myself reaching for time and again.

Click here to get your copy of Cycling Plus 'Bike of the Year' issue.

Author: Cycling Plus

The Details

Colibri Al Tiagra in action