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 Most makers do not publish it, so I assume 15 mm and add 6 mm to the band, which on its own is enough to hold an answer at "probably" rather than "fits".
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 bar is than your saddle.
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 A23
Aero road · 4 sizes
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This is the bike I ride
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- Bike
- ICAN A23 · Aero road · 4 sizes
- Geometry
- icancycling.com, fetched 29 Aug 2026, re-checked, no differences
- Cockpit
- Generic stem and bar, assumed
- Solved with
- cover 15 mm (assumed), max spacers 40 mm (assumed), stem clamp centre 20 mm (assumed), so every verdict carries ±10 mm at the bar
- Sheet
- 6 September 2026 · 210 bikes, 43 makes, 1,262 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 54 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.
In the maker's words
Kept whole, as I read it off icancycling.com.Sold as frame + fork only (USD 899, colours UDM and Chameleon): 'AO23 specify carbon fork', 422 +/-20 g, fork length (axle to crown) 368 mm and rake 45 mm on every size per the chart.
Cockpit and seatpost, in the maker's words · 236 words
Sold as frame + fork only (USD 899, colours UDM and Chameleon): 'AO23 specify carbon fork', 422 +/-20 g, fork length (axle to crown) 368 mm and rake 45 mm on every size per the chart. Head tube: 'Straight 1 1/2" head tube'. Cockpit: the only statement is 'Handlebar&stem: Compatible with ICAN handlebar HBA22'. The HBA22 (store title 'A22 Integrated Handlebar HB21', https://icancycling.com/products/a22-integrated-handlebar-hba22, USD 198) is a full-carbon T700 one-piece bar + stem; the maker lists 'Available sizes: Handlebar & Stem: 400x90mm, 420x90mm, 420x100mm, 440x110mm' (width x stem length) and the store variants currently offered are 420x90, 420x100 and 440x110. The HBA22 dimension image on that page (https://cdn.shopify.com/s/files/1/0871/7140/files/HB21_01.jpg?v=1735999418) shows widths 400 / 420 / 440 mm, stem lengths 90 / 100 / 110 / 120 mm, bar reach 82 mm, drop 125 mm, drop tube diameter 24 mm +/-0.2 and a 93 mm flat centre section; the 120 mm stem shown in the drawing is not offered in the maker's size list. Stem angle, clamp/stack height, spacer stack and headset top-cap height are NOT published on either page. Whether a conventional stem fits is not stated (integrated_cockpit left null). Seatpost: proprietary aero seatpost with the clamp 'embedded in the frame tube', 'the seat post height can be freely adjusted'; seatpost offset, length and whether it ships with the frame are NOT stated. No per-size stock stem length or bar width is published (stock_stem_length and stock_bar_width null).
IMAGE TABLE, read by eye from the 1500x1500 JPEG 'A23-GEOMETRY' (drawing + table) that the brand embeds in the product description on its own store icancycling.com. Source: image_table (brand's own store; geometry published only as the image
How I read the maker's table
the image file itself is served from the CDN of ICAN's official Japanese store icanjp.com (https://icanjp.com/cdn/shop/files/A23.jpg?v=1722563781). Columns as printed: SIZE, TTL, STL, STA, HTL, HTA, RC, BBH, FL, FR, REACH, STACK, FC, WB. The table has rows labelled 46 and 58 but both are BLANK; the store sells 'Size 49/52/54/56 cm' only, so just those four rows are recorded. it is BB DROP (72 mm on every size), not BB height, recorded as bb_drop; FL = fork length axle to crown, 368 mm on every size (no schema field); FR = fork rake, recorded as fork_offset; REACH and STACK are drawn from the BB centre to the top of the head tube (standard frame datum, no headset cap included); FC = front centre; WB = wheelbase. Standover and trail are NOT published (null). Units are mm and degrees; decimals kept exactly as printed (508.6, 530.4, 543.9, 566.8, 574.7, 965.8, 973.8). Sanity check on size 54 from HTA 73, HTL 148, fork 368/45, stack 554, reach 385: computed BB drop 73.8, front centre 583, wheelbase 982.5 - consistent with the printed 72 / 584 / 983. Model year: undated on the page; the image version stamp v=1722563781 is 2024-08-02, the icancycling.com product record was created 2025-01-17 and last updated 2026-08-29; the same product is listed on the brand's regional stores (de / es / fr / it.icancycling.com and the en-xx locales). Frame facts from the page: 'Aero road bike carbon frame for disc brakes', full carbon, frame 1060 +/-50 g, T47-85.5 mm bottom bracket, tyre clearance '700C*25C-28C', flat mount disc 140 mm, 12x100 mm front / 12x142 mm rear thru-axles. No rider height chart is published on the page.
Source: image_table (brand's own store; geometry published only as the image https://icanjp.com/cdn/shop/files/A23.jpg?v=1722563781 embedded in the product description)
