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BikeTwins
How it works

Which bikes are you looking at?

Pick the makes and models you would actually buy. I size every one of them to your position.

Catalogue
210 bikes · 43 makes · 1,262 sizes
Your position
none yet · Start with the bike you ride
Sheet
6 September 2026 · nothing picked yet

Make or model, either way round: "trek" gives you every Trek, "domane" the Domanes whoever makes them. You never pick a size here; I tell you which of its sizes is yours.

Nothing is listed until you ask for it: search, press Road or Gravel for every bike of that kind, or press a letter for the makes that start with it.

Road is every road bike; Gravel is gravel and all-road. The 2 time trial bikes are QuickPro: search for them, or press Q below.

T · 18 bikes

3 makes beginning with T: Tavelo, Trek, Trifox. Press a make for its bikes alone.

Tavelo

3 bikes
Aero road 6sizes
Aero road 6sizes
Gravel 6sizes

Trek

12 bikes
Gravel 5sizes
Gravel 6sizes
Gravel 6sizes
Gravel 6sizes
Gravel 6sizes
Endurance road 7sizes
Endurance road 9sizes
Endurance road 6sizes
Road 8sizes
Road 10sizes
Aero road 6sizes
Aero road · Carbon 6sizes

Trifox

3 bikes
All-road 4sizes
Road 7sizes
Endurance road 4sizes

First, the bike that fits you now

Choose the bike you ride, then its size, and the two parts I cannot see from here. Nothing is stored on my side; your position and your picks ride in the address bar, the same way a shared comparison does.

Leave those three blank if you do not know them. I will stand in 100 mm, -6 and 10 mm, say so on every answer, and your bar band goes from ±13 mm to ±3 mm until you measure them.

Or start from your own numbers

Two minutes with the bike you ride now, or twenty with a tape. Either way the numbers are yours and nothing about your bike is assumed afterwards.