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 Most makers do not publish it, so I assume 10 mm and add 6 mm to the band beside every answer.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
Yoeleo Zen RS
Road · 6 sizes
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This is the bike I ride
No account is needed to read the table. Report a wrong number · Correct this bike
- Bike
- Yoeleo Zen RS · Road · 6 sizes
- Geometry
- yoeleobike.com, fetched 22 Oct 2026, re-checked, no differences
- Seat angle convention
- Calculated from Yoeleo'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.| Size | Stack (mm) | Reach (mm) | Head angle (deg) | Seat angle (deg) | Head tube (mm) | Chainstay (mm) | Wheelbase (mm) | Standover (mm) |
|---|---|---|---|---|---|---|---|---|
| XXS | 487 | 371 | 71.2 | 75 | 81 | 410 | 967 | 682 |
| XS | 507 | 376 | 72.1 | 74.5 | 97 | 410 | 972 | 706 |
| S | 530 | 383 | 72.7 | 74 | 113 | 410 | 975 | 734 |
| M | 556 | 391 | 72.7 | 73.5 | 138 | 410 | 990 | 772 |
| L | 579 | 399 | 72.7 | 73 | 165 | 410 | 1006 | 810 |
| XL | 606 | 410 | 73 | 72.5 | 192 | 410 | 1020 | 848 |
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: yoeleobike.com- Tyre clearance
- 35 mm
- Bottom bracket
- T47 85.5
- Axles and brakes
- 12x100 / 12x142, flat mount
- UDH
- yes
- Seatpost
- not published
- Frame weight
- not published
- In the box
- frame, fork, headset, Spina seatpost set, thru-axles, hardware
- Groupset
- electronic only
In the maker's words
Kept whole, as I read it off yoeleobike.com.Sold as a frameset (frame, fork, headset, Spina seatpost set, thru-axles and hardware); the Linea one-piece carbon bar/stem is an optional bundle: "Linea one-piece carbon bar/stem, 36 to 42 cm".
Cockpit and seatpost, in the maker's words · 185 words
Sold as a frameset (frame, fork, headset, Spina seatpost set, thru-axles and hardware); the Linea one-piece carbon bar/stem is an optional bundle: "Linea one-piece carbon bar/stem, 36 to 42 cm". Linea sizes as printed: 36 cm (drops 39 cm, aero top 43 mm, 305 g, default on XXS), 38 cm (drops 40 cm, aero top 43 mm, 310 g, default on XS / S), 40 cm (drops 42 cm, aero top 45 mm, 315 g, default on M / L), 42 cm (drops 44 cm, aero top 47 mm, 320 g, default on XL); all widths drop 125 mm, bar reach 80 mm, flare/sweep/slope 7/7/4 deg, stem lengths 80/90/100/110/120/130/140 ("stem 80 to 140 mm in 10 mm steps"). No stem angle is printed. The fork has a "straight 1-1/8 in (28.58 mm) steerer, single diameter, so aftermarket spacers and stems fit"; headset inboard bearings, one SKU top and bottom (OD 49.5 x ID 40.5 x H 6.5 mm); routing fully internal through the headset. Spacer stack and top cover height are not published. Seatpost: "Spina aero D-shape, 2-bolt micro-adjust, hidden wedge clamp"; no offset printed.
SOURCE: Yoeleo's own English store, yoeleobike.com (the yoeleo.com store sells the same R11, R12 and G21 frames). Source: html table (maker's own Shopify store yoeleobike.com, product page "Geometry - six sizes" section, an HTML table)
How I read the maker's table
the product is titled "Zen RS Aero Road Frameset 2027 Model" (hence model_year 2027; it was on pre-order, every size "Sold Out - Notify me", on 22 Oct 2026). Bike Insights lists the same page twice, as "ZEN RS" 2027 and as "R12N" 2025; one frame, one file. The geometry is an HTML table with the letter key "A Seat tube, B Top tube, effective, C Reach, D Stack, E Head tube, F Seat tube angle, G Head tube angle, H BB drop, I Chainstay, J Fork rake, K Fork length"; rows recorded as printed: stack, reach, seat tube, top tube (labelled effective), head tube, seat and head angles (to 0.1 deg), BB drop, chainstay 410 every size, fork rake 49 on XXS and XS and 45 from S up, wheelbase, front centre, standover, and trail, printed as "Trail @ 700x28c" (kept; tyre_width_mm 28 records that tyre). Not in the schema, kept here: fork length 376 every size; stack/reach 1.31/1.35/1.38/1.42/1.45/1.48; saddle height range 565 to 715, 595 to 745, 630 to 780, 675 to 825, 720 to 870, 765 to 915 mm; recommended Linea width 36/38/38/40/40/42 cm. A second table maps the sizes to frame numbers and riders: XXS 50 (150 to 163 cm), XS 52 (163 to 170), S 54 (170 to 175), M 56 (175 to 185), L 58 (185 to 192), XL 60 (192 to 200); size_label keeps the geometry table's letters. The page says head angle, fork rake and BB drop change per size "to keep trail in a 57 to 64 mm window". Stack datum: the letter key gives no drawing in the HTML; stack and reach are the frame's (head tube top), as the "D Stack" and "C Reach" letters on Yoeleo's drawing convention; stack_datum "head tube top" is the usual reading, not stated. FRAME WEIGHT: two layups on the one geometry, "Zen RS Standard" frame 950 g (M, painted) and "Zen RS SL" 850 g (M, hero paint); two weights, so frame_weight is left out of frame_facts. System weight "under 1,750 g (frameset, complete)"; fork under 380 g uncut; seatpost set under 200 g. Mounts: two bottle bosses on the down tube, two on the seat tube, no rack, fender or bag mounts.