Seka ExAero GR

Gravel · 6 sizes

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Bike: Seka ExAero GR · Gravel · 6 sizes · integrated cockpit
Geometry: sekabikes.com, fetched 29 Aug 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: 6 September 2026 · 210 bikes, 43 makes, 1,262 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)
49	524	369	70.4	75	96.4	423	999	747
52	540	375	71	74.3	111	423	1005	771
54	559	381	71.3	74	132	423	1016	792
56	579	389	71.6	74	152	423	1027	815
58	602	399	72	73.5	176.5	423	1042	837
61	620	408	72.2	73	195	423	1055	858

The table runs on to the right: 6 more columns after Reach. Scroll it sideways to read them.

The 56 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.

In the maker's words

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

Cockpit and seatpost, in the maker's words · 132 words

Frameset with the SEKA Gladius GR one-piece integrated gravel cockpit: 3 widths 380/440, 400/460, 420/480 mm (hoods/drops, 16 deg flare each side) x 5 stem lengths 80/90/100/110/120 mm, any combination (15 sizes), reach 69 mm, drop 118 mm, about 395 g (400/460-90) excluding hardware, compatible with the Rapier computer mount; two seatpost offsets, 0 mm and 15 mm setback. Frame: 980 g (size 54, +/-35 g, unpainted), T47 threaded 68 mm bottom bracket, headset bearings upper and lower 52x40x7 mm 45/45 deg, 12x100 / 12x142 thru-axles, tyre clearance 56 mm front / 52 mm rear, opposed-bolt seatpost clamp for 7x7 / 7x9 / 7x10 rails, 700C, integrated internal storage compartment, ExAero MAG magnetic aero bottles. Stem angle, spacer heights, max spacer stack and top-cover height are not published. stock_stem_length / stock_bar_width null.

SOURCE: SEKA's ExAero GR White Paper (32 pages, 22.9 MB, uploaded 2025-11), page 29 "Geometry", table "Frame Geometry & Height Size Chart" with rows SIZE, C1, RC, H, FC, WB, L, N, Q1, Q7, F, G, STACK, REACH, TRAIL, Standover (mm), Recommended height (cm & feet) for sizes 49/52/54/56/58/61, all present in the PDF text layer and extracted by script (the same page also plots trail and wheelbase per size, with the same values). Source: pdf_table (the maker's ExAero GR White Paper PDF, linked from

How I read the maker's table

Recommended height: 49 150-162 cm (4ft 11in-5ft 4in), 52 160-172, 54 170-180, 56 178-188, 58 186-196, 61 194-207 cm. The plot on the page labels its x-axis "size 49, size 50, size 54 ..." where the table says 52 - a maker slip in the chart labels only. Consistency check (mine, not published): sqrt(FC^2 - H^2) + sqrt(RC^2 - H^2) reproduces WB within 0.5 mm on every size (49: 582.3 + 416.5 = 998.8 vs 999; 61: 637.2 + 417.2 = 1054.4 vs 1055). MODEL YEAR: not stated (white paper and page assets dated 2025-11 to 2026-01), null. Category gravel. No aggregator consulted. Source: pdf_table (the maker's ExAero GR White Paper PDF, linked from https://www.sekabikes.com/en/exaero-gr-en/ ; page 29 "Frame Geometry & Height Size Chart" carries the table as a real text layer, extracted by script; the product page itself publishes only a height chart image and the text "74-70mm bottom bracket drop and 423mm chainstays". PDF not stored)