Velobuild GF-002

Gravel · 5 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: Velobuild GF-002 · Gravel · 5 sizes
Geometry: velobuildmall.com, fetched 22 Oct 2026, read off the maker's chart, re-checked, no differences
Seat angle convention: Calculated from Velobuild'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)
XS	537	371	70.5	74.5	120	435
S	558	375	71	74	140	435
M	569	376	71.5	73	150	435
L	590	385	72	73	170	435
XL	609	394	72	73	190	435

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: velobuildmall.com

Tyre clearance: 50 mm
Bottom bracket: BB386
Axles and brakes: flat mount
UDH: not published
Seatpost: 27.2 mm round
Frame weight: 1100 g, size M

In the maker's words

Kept whole, as I read it off velobuildmall.com.

The spec offers an "Integrated bar: 400/90 400/100 420/100 420/110 440/110 440/120mm" (one-piece, width/stem length; full carbon, 380g; no stem angle printed) or a "Separate bar and stem: Bar: 400/420/440mm, Stem: 80/90/100/110/120mm".

Cockpit and seatpost, in the maker's words · 38 words

SOURCE: velobuildmall.com is VeloBuild's second store (UEESHOP, the same image host account UPBA916 as velobuild.com, whose pages the other VeloBuild files cite). Source: image_table (maker's own store velobuildmall.com; geometry published only as the description image

How I read the maker's table

Product page "2021 VeloBuild Carbon Fiber Integrated Gravel Bike Frame Hidden Cables" (model_year 2021 from the title; images uploaded Jan 2024). Rows as printed, under "SIZE IN(mm)": A "BB center to top of seattube"; B "Effectuve tio tube horizonta(l)" (sic; top_tube_effective); C "BB offset" printed with a minus sign (recorded as bb_drop, the drop); D chainstay length; E seat angle; F head angle; G front center; H head tube length; I fork offset; J reach; K stack (both to the head tube top in the drawing). No wheelbase, trail or standover printed. The S and M print the same front centre, 600, with different head tubes and angles: kept as printed, a possible slip. FORK OFFSET: the table prints I = 50 on every size; the page's spec image says the fork's "OFFSET: 45mm" (maker against maker; 50 kept from the geometry). Spec image: full carbon Toray T800; integrated seat clamp; frame 1100g (size M, clear coat, without metal parts); headset bearings 1-1/2 in x 7mm lower and upper; flat mount brake; BB386 (ID 46mm, width 86.5mm); Di2 and eTap compatible; EPS and latex moulding; full integrated cable routing; thru axle "M12*1.5*163mm" (frame) and "m12*1.5*130mm" (fork); max tyre 700C*50C; rotors up to 160mm; frame sizes XS/S/M/L/XL; fork 420g, steerer 300mm; seatpost 400mm / 27.2mm round, 230g. Source: image_table (maker's own store velobuildmall.com; geometry published only as the description image https://ueeshop.ly200-cdn.com/u_file/UPBA/UPBA916/2401/18/photo/GF02-GEOMETRY-2.jpg, 950x780 px, headed "GEOMETRY GF-002 GRAVEL BIKE FRAMESET DISC BRAKE"; read by eye, image NOT stored)