Stack and reach
How high and how far forward the top of the head tube is, from the bottom bracket. They are the two numbers that decide whether a frame can be set up like yours.
BB, or bottom bracket
The axle your cranks turn on, in the middle of the frame. Every number on this site is measured from it, because it is the one point that sits in the same place on every bike.
Headset cover
The little cap on top of the head tube, under your spacers. Most makers do not publish it, so I assume 10 mm and add 6 mm to the band beside every answer.
Stem clamp, and its centre
The collar on the steerer that your stem bolts to. I need the middle of it. Where a maker gives only the height, I assume halfway up and say so on the answer.
Steerer
The tube coming up out of the fork. The cover, the spacers and the stem all sit on it, and it is the thing a mechanic cuts to length.
Bar reach
How far forward the hoods sit from the middle of the bar. Two bars on the same stem can put your hands 20 mm apart, which is why I ask.
Setback
How far your saddle sits behind the bottom bracket.
Drop
How much lower your hands sit than your saddle. On a riser bar I count the bar's rise, so the drop is that much less than it is to the clamp.
Rails, and the rail centre
The two rods under your saddle, and the middle of the straight part of them. That midpoint is the point I use, because it is the one you can find with a tape.
The band
How far out I could be, in millimetres, and why. It is a straight sum of everything I had to assume rather than a clever average, so it errs wide on purpose.
wb, stand, trail
Wheelbase, standover and trail: how long the bike is, how high the top tube is where you straddle it, and how steady the steering feels. I show them against your bike, and I leave them out when the maker does not publish them.
est.
Estimated: a number I worked out rather than read off the maker's table. Anything marked this way can move if the maker publishes the real one.
Close Escape closes it. The measuring guide has the pictures. Open the measuring guide
ICAN A54
Aero road · 5 sizes
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This is the bike I ride
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- Bike
- ICAN A54 · Aero road · 5 sizes
- Geometry
- icanbikes.com, fetched 22 Oct 2026, re-checked, no differences
- Cockpit
- Generic stem and bar, assumed
- Solved with
- cover 10 mm (assumed), max spacers 40 mm (assumed), stem clamp centre 20 mm (assumed), so every verdict carries ±10 mm at the bar
- Sheet
- 22 October 2026 · 879 bikes, 79 makes, 4,979 sizes in the catalogue
Geometry, every size, from the maker's table
The tinted row is the size drawn beside it. Press a size to draw it.The table runs on to the right: 6 more columns after Reach. Scroll it sideways to read them.
The M drawn to scale from the table, with no build on it. Stack and reach run from the bottom bracket to the top of the head tube; every size is solved from those two. One square is 100 mm.
The maker's cockpit
No stock cockpit I can name, so every size is solved on a generic stem and bar unless you choose one on the sheet.Generic stem and barAssumedNo bar is listed for this frame.
Frame facts
read off the maker's page: icanbikes.com- Tyre clearance
- 35 mm
- Bottom bracket
- T47
- Axles and brakes
- not published
- UDH
- not published
- Seatpost
- proprietary SP-A54
- Frame weight
- not published
In the maker's words
Kept whole, as I read it off icanbikes.com.The spec names handlebar "HB-25, 400*100mm" (ICAN's one-piece bar, 400 mm wide, 100 mm stem) and the proprietary seatpost "SP-A54"; headset "FSA HS ACR/int.
Cockpit and seatpost, in the maker's words · 43 words
The spec names handlebar "HB-25, 400*100mm" (ICAN's one-piece bar, 400 mm wide, 100 mm stem) and the proprietary seatpost "SP-A54"; headset "FSA HS ACR/int. NO.55R 1.5 in/ACR" (ACR-pattern internal routing). The page prints no per-size bar or stem, so stock fields are null.
SOURCE: icanbikes.com is ICAN's second English site (WordPress, "Products-list" pages), beside the Shopify store icancycling.com that the other ICAN files cite. Source: html table (maker's own site icanbikes.com, product page "Pro Racing Frameset ICAN A54": a geometry table in the page HTML under the spec table)
How I read the maker's table
both carry the same A9, A23 and TRA01 frames under the ICAN name, and the A54 is on icanbikes.com only. The page "Aero Carbon Road Bike Frame | Pro Racing Framest ICAN A54" (images uploaded Aug 2026; Bike Insights files it as ICAN Bikes Road 2026, build A54; no model year printed, model_year null) holds two HTML tables: a spec table and the geometry table. Columns as printed: SIZE XS/S/M/L/XL, TTL (top_tube_effective; no drawing on the page says how it is measured; it closes against stack, reach and the printed seat angle on XS, S and M within 1.3 mm, but the L and XL top tubes are 7.2 and 14.7 mm shorter than those numbers give: kept as printed, see seat_angle_check), STL, STA, HTL, HTA, RC 415, BBH 70 (recorded as bb_drop: 70 is a BB drop, a BB height would be near 270; ICAN's drawings use BBH for the drop), FL fork length 374 (not in the schema), FR fork rake 45, FC, REACH, STACK, WB. No trail or standover printed. Reach runs 388/389/389/394.5/400: S and M print the same reach (as printed, not a fall). Spec table: Carbon fiber T700 T800 T1000, UD matt, handlebar "HB-25, 400*100mm", seatpost "SP-A54", BB T47, headset "FSA HS ACR/int. NO.55R 1.5 in/ACR", crankset Shimano 2x12 52-36T, full internal cable routing, rotors F 160 and R 160, thru axle 100mm and 142mm, max tire 700*35C, "Frame 996+/-50g" (no size), EN test.