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 Most makers do not publish it, so I assume 10 mm and add 6 mm to the band beside every answer.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 AC33
Gravel · 4 sizes
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This is the bike I ride
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- Bike
- ICAN AC33 · Gravel · 4 sizes
- Geometry
- icanbikes.com, fetched 22 Oct 2026, read off the maker's chart, re-checked, no differences
- Seat angle convention
- Calculated from ICAN's table
- 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 52 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
- 700c x 40 mm
- Bottom bracket
- BB386
- Axles and brakes
- 12x100 / 12x142, flat mount
- UDH
- not published
- Seatpost
- 27.2 mm round
- Frame weight
- 1170 g, size 46
In the maker's words
Kept whole, as I read it off icanbikes.com.Sold as a frame; headset "H373 1-1/2 1-1/4" (tapered), all cables internal.
Cockpit and seatpost, in the maker's words · 20 words
Sold as a frame; headset "H373 1-1/2 1-1/4" (tapered), all cables internal. No bar, stem or per-size stem length printed.
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: image_table (maker's own site icanbikes.com; geometry published only as the image
How I read the maker's table
both carry the same A9, A23 and TRA01 frames under the ICAN name, and the frame below is on icanbikes.com only (not in icancycling.com's product sitemap, fetched 22 Oct 2026). The page "Carbon Fiber Gravel Bike Frame | Frame Gravel Carbon | ICAN AC33" has a spec table and the geometry image (file dated 2024-10-18 in its name; Bike Insights files the AC33 under 2023; no model year printed, model_year null). Columns as printed: SIZE 46/49/52/55, TTL (drawn horizontal: top_tube_effective), STL, STA 72.5 every size, HTL, HTA, RC, BBH (BB drop), FL fork length 395 (not in the schema), FR fork rake 50, REACH, STACK (to the head tube top), FC, WB. No trail or standover printed. Spec table: "Full Carbon Toray 700&800 Super Light", seatpost 27.2mm, sizes 46/49/52/55cm, BB386, fork 480+/-15g, disc flat mount, rear 142X12, front 100X12, max tire "Road Disc-700*28C, CX-700*40C, MTB-650B*2.1" (650B x 2.1 in is not converted; frame_facts keeps the 700c figure), headset "H373 1-1/2 1-1/4", weight "1170+/-40g (size 46)". The AC33's top tubes equal the G48's (529/550/571.5/593) with different head tubes, stack and reach: a separate frame (ican-g48).
Source: image_table (maker's own site icanbikes.com; geometry published only as the image https://www.icanbikes.com/wp-content/uploads/2024/07/%E5%87%A0%E4%BD%95%E5%9B%BE_20241018144647.avif (file name "geometry drawing" in Chinese), 2011x1531 px AVIF, a CAD drawing over a table; read by eye, image NOT stored)
