Stack and reach
How high and how far forward the top of the head tube is, from the bottom bracket. They are the two numbers that decide whether a frame can be set up like yours.
BB, or bottom bracket
The axle your cranks turn on, in the middle of the frame. Every number on this site is measured from it, because it is the one point that sits in the same place on every bike.
Headset cover
The little cap on top of the head tube, under your spacers. Most makers do not publish it, so I assume 15 mm and add 6 mm to the band, which on its own is enough to hold an answer at "probably" rather than "fits".
Stem clamp, and its centre
The collar on the steerer that your stem bolts to. I need the middle of it. Where a maker gives only the height, I assume halfway up and say so on the answer.
Steerer
The tube coming up out of the fork. The cover, the spacers and the stem all sit on it, and it is the thing a mechanic cuts to length.
Bar reach
How far forward the hoods sit from the middle of the bar. Two bars on the same stem can put your hands 20 mm apart, which is why I ask.
Setback
How far your saddle sits behind the bottom bracket.
Drop
How much lower your bar is than your saddle.
Rails, and the rail centre
The two rods under your saddle, and the middle of the straight part of them. That midpoint is the point I use, because it is the one you can find with a tape.
The band
How far out I could be, in millimetres, and why. It is a straight sum of everything I had to assume rather than a clever average, so it errs wide on purpose.
wb, stand, trail
Wheelbase, standover and trail: how long the bike is, how high the top tube is where you straddle it, and how steady the steering feels. I show them against your bike, and I leave them out when the maker does not publish them.
est.
Estimated: a number I worked out rather than read off the maker's table. Anything marked this way can move if the maker publishes the real one.
Close Escape closes it. The measuring guide has the pictures. Open the measuring guide
Seka Exceed
Aero road · carbon · 5 sizes
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This is the bike I ride
No account is needed to read the table. Report a wrong number · Correct this bike
- Bike
- Seka Exceed · Aero road · carbon · 5 sizes · integrated cockpit · seatpost offsets 0 / 15 mm
- Geometry
- sekabikes.com, fetched 28 Aug 2026, not yet re-checked
- Cockpit
- Exceed Integrated Handlebar GEN 2, -8, the maker's spec
- Solved with
- cover 15 mm (assumed), max spacers 40 mm (published), 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.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
What each size is solved on unless you choose another bar on the sheet.Seka Exceed Integrated Handlebar GEN 2, -8Stockstem -8 · reach 77 · lengths 90-130
In the maker's words
Kept whole, as I read it off sekabikes.com.Exceed Integrated Handlebar GEN 2 (one-piece bar/stem, included with Exceed framesets): 15 sizes = every combination of bar width 380 / 400 / 420 mm x stem length 90 / 100 / 110 / 120 / 130 mm (full 3x5 tick matrix in the official 2024 catalogue).
Cockpit and seatpost, in the maker's words · 146 words
Exceed Integrated Handlebar GEN 2 (one-piece bar/stem, included with Exceed framesets): 15 sizes = every combination of bar width 380 / 400 / 420 mm x stem length 90 / 100 / 110 / 120 / 130 mm (full 3x5 tick matrix in the official 2024 catalogue). Stem angle -8 deg, bar reach 77 mm, drop 130 mm, weight 325 g (380x100, painted). No default size per frame size is published; SEKA says it "can be custom fit for all Exceed models" and the FAQ says the buyer chooses the spec. Headset spacers supplied: 5 mm and 10 mm (frameset ships with two 10 mm + four 5 mm, or three 10 mm + two 5 mm). Max spacer height: NOT published on any official page read. Top cap: "3.2 g super light top cap" (height not published). Seatpost: 0 mm or 15 mm offset options.
OFFICIAL SOURCE: sekabike.com (no s) is an unrelated GoDaddy "Launching Soon" placeholder (https://sekabike.com/). Source: image
How I read the maker's table
The manufacturer site is sekabikes.com. The Exceed is no longer in the top navigation (current line-up: ExAero, Spear, ExAero GR, Afield) and https://www.sekabikes.com/en/exceed/ redirects to a Chinese frameset page with no geometry, but the official geometry chart images are still hosted in the WordPress media library: EN chart with standover uploaded 2024-12-03 (source_url above, also -01.jpg is the Chinese-labelled twin at https://www.sekabikes.com/wp-content/uploads/2024/12/EXCEED-%E5%B8%A6%E8%B7%A8%E9%AB%98%E5%87%A0%E4%BD%95jpg-01.jpg) and an earlier EN chart uploaded 2024-06-30 (https://www.sekabikes.com/wp-content/uploads/2024/06/Exceed.%E5%87%A0%E4%BD%95ENpng.png). Both were downloaded and read; numbers identical. The same table (identical values) appears on page 2 of the official 2024 SEKA product catalogue PDF: https://www.sekabikes.com/wp-content/uploads/2024/06/SEKA%E5%85%A8%E7%B3%BB%E5%88%97%E4%BA%A7%E5%93%81%E5%BD%95-2024-%EF%BC%88%E8%8B%B1%EF%BC%89.pdf (also read). The catalogue states "EXCEED offers two options, RDC and Standard frameset" with one shared geometry table, 5 sizes, max tyre 30c, 0 or 15 mm offset seatposts. MODEL YEAR: the chart images are dated June and December 2024 and the catalogue is the 2024 edition; SEKA does not print a model year on the table. Third-party databases (geometrygeeks) file the Exceed as 2021-2023 with the same stack/reach, so the geometry appears unchanged since launch (uncertain - not stated by SEKA). COLUMN MAPPING (from the diagram on the official chart): STACK, REACH, TRAIL as labelled; C1 = seat tube length (BB centre to top of seat tube along the tube); RC = rear centre / chainstay; H = BB drop; FC = front centre; WB = wheelbase; L = head tube length; N = horizontal (effective) top tube (confirmed by geometry check: reach + stack/tan(STA) reproduces N within 3 mm for every size, and reseller Khass Bicycles labels N as Effective Top Tube); Q1 = head tube angle; Q7 = seat tube angle; F = fork offset; G = fork length axle-to-crown (375 mm on XS/S with the 50 mm offset fork, 372 mm on M-XL with the 46 mm offset fork) - G is not one of the requested fields so it is only recorded here. Angles are printed as whole degrees. STANDOVER: the official chart column is "Inseam Height (mm)" defined as "measured at 50mm in front of the bottom bracket center, with a 680mm tire outer diameter" - recorded in standover with that caveat. "Recommended Height (cm)": XS 153-163, S 162-172, M 171-179, L 178-185, XL 184-191. COCKPIT: integrated one-piece Exceed Integrated Handlebar GEN 2 is included with the frameset (catalogue p.2; EN FAQ https://www.sekabikes.com/en/faq2/ "the handlebar (with CNC computer mount and 15 specifications available)"). Matrix read from the catalogue table: widths 380/400/420 mm x stem 90/100/110/120/130 mm, all 15 ticked. Stem angle -8 deg, reach 77 mm, drop 130 mm. Stock stem length / bar width per frame size: NOT published anywhere official, so stock_stem_length and stock_bar_width are null for all sizes. Spacers: user manual (https://www.sekabikes.com/wp-content/uploads/2024/06/Exceed-User-Manual-V6_.pdf) lists 5 mm spacer (HS-01) and 10 mm spacer (HS-02) with headset dust cover and cable router ring; FAQ says frameset ships with "two 10mms and four 5mms or three 10mms and two 5mms". No maximum spacer stack, top cap height or headset cap height is published on any page read - unknown. The FAQ also confirms EXCEED can run conventional stems/bars with an optional adapter. Frame is UCI approved (SEKA-EXCD frameset 44104 per catalogue p.3). The Khass Bicycles reseller page (https://www.khassbicycles.com/product-service/seka-exceed-frame-set) reprints an older version of the table with decimals (reach XS 360.5, ETT 494.6/520.5/535.7/561.9/575.4) - consistent with the official rounded values; not used as the source.
