On-One Rujo
Gravel · 4 sizes
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- Bike
- On-One Rujo · Gravel · 4 sizes
- Geometry
- planetx.co.uk, 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 L 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
not read off the maker's page yet: planetx.co.uk- Tyre clearance
- not recorded yet
- Bottom bracket
- not recorded yet
- Axles and brakes
- not recorded yet
- UDH
- not recorded yet
- Seatpost
- not recorded yet
- Frame weight
- not recorded yet
In the maker's words
Kept whole, as I read it off planetx.co.uk.Not printed on the sizing page: builds are configured on the product pages (frame build kits and complete bikes), so stock stem and bar are null.
Cockpit and seatpost, in the maker's words · 26 words
Not printed on the sizing page: builds are configured on the product pages (frame build kits and complete bikes), so stock stem and bar are null.
OFFICIAL SOURCE: "Rujo Size Guide and Geometry" (https://planetx.co.uk/pages/rujo-size-guide-and-geometry). Source: html table (official sizing page "Rujo Size Guide and Geometry" on planetx.co.uk, the On-One brand owner's store; fetched 2026-10-22
How I read the maker's table
Planet X (planetx.co.uk) is the retailer that owns and sells the On-One brand; this is the brand's own sizing page on that site, not a third-party listing. The Rujo is sold there as "On-One Rujo Gravel Bike / Frame Build Kit". Four sizes S, M, L, XL; the size guide pairs them with seat tubes 495mm / SML, 525mm / MED, 545mm / LRG, 565mm / XL. The page prints no fork offset, standover, trail, stem or bar (null), and does not say where stack is measured to (stack_datum null); a geometry drawing image sits beside the table and was not needed (the table is HTML). Model year: the page does not date the chart; it is the listing on the fetch date, so model_year is null. Bike Insights files the Rujo as 2022 and 2024 versions.
Source: html table (official sizing page "Rujo Size Guide and Geometry" on planetx.co.uk, the On-One brand owner's store; fetched 2026-10-22, HTTP 200)