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 Most makers do not publish it, so I assume 10 mm and add 6 mm to the band beside every answer.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
Ribble Endurance SL Disc
Endurance road · 6 sizes
The Endurance SL Disc on ribblecycles.co.uk
Sign in and add the bike you ride, and this table will say what each size needs for your position.
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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
- Ribble Endurance SL Disc · Endurance road · 6 sizes
- Geometry
- ribblecycles.co.uk, from the Internet Archive's copy of 2024, 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.| Size | Stack (mm) | Reach (mm) | Head angle (deg) | Seat angle (deg) | Head tube (mm) | Chainstay (mm) | Wheelbase (mm) | Standover (mm)not published |
|---|---|---|---|---|---|---|---|---|
| XXS | 495 | 372 | 71 | 75 | 100 | 415 | 986 | |
| XS | 498 | 382 | 71 | 74.5 | 110 | 415 | 987 | |
| S | 521 | 385 | 72 | 74 | 130 | 415 | 989 | |
| M | 541 | 390 | 72.5 | 73.6 | 150 | 415 | 997 | |
| L | 562 | 396 | 73 | 73.3 | 170 | 415 | 1004 | |
| XL | 582 | 401 | 73.3 | 73 | 190 | 415 | 1012 |
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: ribblecycles.co.uk, from the Internet Archive's copy of 2024- Tyre clearance
- 32 mm
- Bottom bracket
- not published
- Axles and brakes
- not published
- UDH
- not published
- Seatpost
- not published
- Frame weight
- not published
In the maker's words
Kept whole, as I read it off ribblecycles.co.uk, from the Internet Archive's copy of 2024.Ribble builds were configured at order on this page; the geometry table prints no stem length or bar width per size, so the stock fields are null.
Cockpit and seatpost, in the maker's words · 27 words
Ribble builds were configured at order on this page; the geometry table prints no stem length or bar width per size, so the stock fields are null.
OFFICIAL SOURCE, ARCHIVED: Ribble Cycles' own Endurance SL Disc model page (carbon disc endurance road) as the Internet Archive captured it on 2024-07-21. Source: html table (Internet Archive snapshot 2024-07-21)
How I read the maker's table
its "Sizing & Geometry" panel is an HTML table, six sizes XXS to XL. Ribble's live site answers 403 to fetchers (round 10). Rows as printed: A - Seat Angle, B - Top Tube (no effective or horizontal wording; recorded as top_tube_effective), C - Head Angle, D - Offset/Fork Rake (fork_offset), E - Head Tube, F - BB Drop, RC - Chainstay Length, FC - Front Centre, Stack, Reach, WB - Wheelbase, G - Seat Tube C-Top (seat_tube_length, centre to top), plus rider height and wheel size (700C on every size) rows not in the schema. Model year 2024 from the capture date; Ribble prints none. Bike Insights files the same table under 2022 and 2023, and an earlier 2020 version of the Endurance SL Disc with five sizes (no XXS) and XS and S wheelbases of 996 against 987 and 989 here; that 2020 page was not read (web.archive.org blocked this machine on 22 Oct 2026). The same Ribble endurance table is printed, by Bike Insights' records, for the Endurance SL R Disc (2022) and, in its 2020 form, for the Endurance SL (rim) and Endurance Ti Disc. Frame facts from the same capture: up to 32 mm tyres, or 25 mm with mudguards fitted; discreet mudguard mounts.