Colnago G4-X
Gravel · 5 sizes
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- Bike
- Colnago G4-X · Gravel · 5 sizes · integrated cockpit
- Geometry
- colnago.com, 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.The table runs on to the right: 6 more columns after Reach. Scroll it sideways to read them.
The 520 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.Colnago CC.01 WideVendor-listedstem -8 · reach 72.5 · drop 120 · lengths 80-120 · widths 400-400
Stock stem and bar per size450 90 x 400, 480 90 x 400, 520 100 x 420, 540 110 x 420, 570 110 x 420 (stem length x bar width, mm)
Frame facts
not read off the maker's page yet: colnago.com- 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 colnago.com.The page lists "Handlebar: CC.01 Wide integrated cockpit" and "Stem: Integrated cockpit (CC.01 Wide)"; the size tabs print "Default cockpit size (CC.01 Wide)" 90mm - 400/460 (C-C) on 450 and 480, 100mm on 520, 110mm on 540 and 570, and also a "Default stem length (Colnago SR10)" and "Default handlebars width (Deda Superzero)" per size for a two-piece build.
Cockpit and seatpost, in the maker's words · 113 words
The page lists "Handlebar: CC.01 Wide integrated cockpit" and "Stem: Integrated cockpit (CC.01 Wide)"; the size tabs print "Default cockpit size (CC.01 Wide)" 90mm - 400/460 (C-C) on 450 and 480, 100mm on 520, 110mm on 540 and 570, and also a "Default stem length (Colnago SR10)" and "Default handlebars width (Deda Superzero)" per size for a two-piece build. Colnago CC.01 Wide (https://139650070.fs1.hubspotusercontent-eu1.net/hubfs/139650070/Geometrie%20schede/COLNAGO_CC01WIDE_tech.pdf): an integrated one-piece gravel cockpit; stem angle -8 deg (drawn as 82 deg between stem and steerer); stem lengths 80/90/100/110/120 mm; bar reach 72.5 mm (printed "72,50"); drop 120 mm (printed "120,00"); every length sold as "40/46": 400 mm across the tops ("400,00") and 460 mm across the drops ("460,00").
OFFICIAL SOURCE: Colnago's G4-X page (https://www.colnago.com/en-us/products/g4-x-bike). Source: html table (official Colnago product page, its size tabs parsed from the markup; the page links no geometry chart; fetched 2026-10-20
How I read the maker's table
Column mapping: reach; stack; top_tube_effective; head_tube_angle; seat_tube_angle; chainstay; front_centre; bb_drop. Size labels as printed (450, 480, 520, 540, 570). There is no chart or drawing; the size tabs use the same letters as Colnago's charts (O horizontal top tube, Ss head angle, Sc seat angle, C chainstay, A front centre). stock_stem_length and stock_bar_width are the page's per-size "Default stem length" and "Default handlebars width" (450 90/400; 480 90/400; 520 100/420; 540 110/420; 570 110/420). Not published, so null: wheelbase, standover, trail, fork rake, seat tube length, head tube length. SOURCE: the G4-X page links no geometry chart, so every number is from the page's own size tabs (parsed from the markup). They print no head tube length, no seat tube length, no rake, no trail and no wheelbase (null). The size tabs read 450, 480, 520, 540, 570 as printed (520, not 510). The 480 tab prints no crank length. stock_stem_length and stock_bar_width are the two-piece SR10 stem and Deda Superzero bar ("400 (C-C)", "420 (C-C)"). Stock tyre "Pirelli Cinturato Gravel 40 TLR" (tyre_width_mm 40); "The G4-X can fit tires with a maximum nominal width of 45mm." Model year is not printed (null).
Source: html table (official Colnago product page, its size tabs parsed from the markup; the page links no geometry chart; fetched 2026-10-20, HTTP 200)