De Rosa Idol
Road · 6 sizes
Sign in and add the bike you ride, and this table will say what each size needs for your position.
Sign in
This is the bike I ride
No account is needed to read the table. Report a wrong number · Correct this bike
- Bike
- De Rosa Idol · Road · 6 sizes
- Geometry
- derosa.it, fetched 20 Oct 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
- 22 October 2026 · 686 bikes, 74 makes, 3,984 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 |
|---|---|---|---|---|---|---|---|---|
| 433 | 508.3 | 370 | 71.3 | 74.2 | 106.6 | 412 | 969 | |
| 458 | 516.1 | 378.3 | 71.6 | 73.9 | 114.6 | 412 | 979.2 | |
| 483 | 537.1 | 384.2 | 72.6 | 73.6 | 130 | 412 | 977.7 | |
| 507 | 556.8 | 389.8 | 73 | 73 | 149 | 412 | 987.6 | |
| 534 | 577.1 | 395.6 | 73.1 | 73 | 170 | 412 | 998.6 | |
| 561 | 596.9 | 402.4 | 73.3 | 72.7 | 190 | 412 | 1011.4 |
The table runs on to the right: 6 more columns after Reach. Scroll it sideways to read them.
The 507 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. A dashed tube is a number the maker left out (est.).
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: derosa.it- 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 derosa.it.The Idol page names no handlebar or stem and links no handlebar sheet.
Cockpit and seatpost, in the maker's words · 13 words
The Idol page names no handlebar or stem and links no handlebar sheet.
OFFICIAL SOURCE: De Rosa's Idol page (https://derosa.it/model/idol/), the "Geometries" table. Source: html table (official De Rosa model page, section "Geometries": the table in the page markup; fetched 2026-10-20
How I read the maker's table
Not published, so null: seat tube length, standover, trail, stock stem and bar per size; the page names no stock tyre (tyre_width_mm null). Column letters from the drawing beside the table (read only for its letters, not stored): O is drawn horizontal from the seat tube line to the steerer, ABOVE the head tube top (the REACH line and a dashed line at the head tube top sit lower), so it is recorded as top_tube_effective with that caveat; HS head tube; SC seat angle; HC head angle; G BB drop; RC rear centre (chainstay); FC front centre; WB wheelbase; F fork length 373 (not in the schema); OT fork offset (48 on the two small sizes, 43 above); STACK and REACH from the BB to the top of the head tube (stack_datum null). Every number is printed with one decimal (517.0, 412.0); recorded as printed. The drawing also marks S (seat tube) and a 200 mm seatpost insertion, not in the table. Model year not printed (null).
Source: html table (official De Rosa model page, section "Geometries": the table in the page markup; fetched 2026-10-20, HTTP 200)