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 Most makers do not publish it, so I assume 15 mm and add 6 mm to the band, which on its own is enough to hold an answer at "probably" rather than "fits".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
Winspace G5 Gravel
Gravel · 6 sizes
Sign in and add the bike you ride, and this table will say what each size needs for your position.
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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
- Winspace G5 Gravel · Gravel · 6 sizes · integrated cockpit
- Geometry
- winspace.cc, 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) |
|---|---|---|---|---|---|---|---|---|
| XS | 531 | 367 | 70.5 | 73.5 | 100 | 423 | 1000 | 751 |
| S | 544 | 375 | 70.7 | 73.5 | 113 | 423 | 1011 | 768 |
| M | 561 | 383 | 71.2 | 73.5 | 130 | 425 | 1020 | 788 |
| L | 578 | 391 | 71.5 | 73.5 | 147 | 425 | 1031 | 811 |
| XL | 598 | 399 | 71.5 | 73.5 | 170 | 427 | 1049 | 839 |
| XXL | 619 | 407 | 71.5 | 73.5 | 193 | 427 | 1064 | 865 |
The table runs on to the right: 6 more columns after Reach. Scroll it sideways to read them.
The L 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 winspace.cc.Winspace sells its frames bar-less or as "bundles" with its own one-piece bars (HYPER Integrated Handlebar, Zero K, Zero SL, HYPER 2 Riser; Adventure Integrated Handlebar for the gravel frames); the frame page lists no per-size stock bar or stem, so stock_stem_length / stock_bar_width are null.
Cockpit and seatpost, in the maker's words · 176 words
Winspace sells its frames bar-less or as "bundles" with its own one-piece bars (HYPER Integrated Handlebar, Zero K, Zero SL, HYPER 2 Riser; Adventure Integrated Handlebar for the gravel frames); the frame page lists no per-size stock bar or stem, so stock_stem_length / stock_bar_width are null. Head tube "NO.55R 1.5in / ACR / STD (headset included)" on the current frames: FSA ACR full-internal routing through a 1-1/2 in upper bearing, which fits Winspace's own ACR-pattern bars and any ACR-compatible stem. Spacer heights, maximum spacer stack and top-cover height are not published on the frame page. The G5 page copy: integrated frame storage with a magnetic cover, "The front wheel can fit 2.25 in (57-58 mm wide) tires, and the rear wheel can fit 2.1 in (53 mm wide) tires"; table rows O/P give the supplied seatpost as 320 mm with 0 mm setback on XS and S and 360 mm with 15 mm setback on M to XXL. The matching bar is Winspace's "Adventure Integrated Handlebar" (sold separately); its sizes are not on the frame page.
SOURCE: the maker's own store page, "Geometry Chart" tab, two images and no HTML table. Source: image_table (maker's own Shopify store, product page "Geometry Chart" tab: the letter drawing
How I read the maker's table
every number was read from the table image (2117x1630 px, sharp) by the collector. Table rows as printed for XS/S/M/L/XL/XXL: BB Height 283/283/285/285/287/287; Fork Length 398 all sizes; seatpost 320/320/360/360/360/360 with setback 0/0/15/15/15/15; STR 1.45/1.45/1.46/1.48/1.50/1.52; Recommended Height 155~163 / 163~171 / 171~179 / 179~186 / 186~193 / "193~2" (the XXL band is cut off at the right edge of the image); the trail basis tyre is not stated on this table. Front centre not published (null). Consistency check (mine, not published): with a 700c x 45 mm gravel tyre (radius about 356 mm) the printed head angles and rakes give trail 66.9 / 65.8 / 64.5 / 62.9 / 62.9 / 62.9, within about 1 mm of the printed row, so the maker's trail assumes a tyre of roughly that size. MODEL YEAR: not stated (Shopify product published 2026-06-24); null. Category gravel. No aggregator consulted.
Source: image_table (maker's own Shopify store, product page "Geometry Chart" tab: the letter drawing https://www.winspace.cc/cdn/shop/files/G5_Detailed_Description_9.png (headed "GEOMETRY G5") and the table https://www.winspace.cc/cdn/shop/files/G5_Detailed_Description_10.png (2117x1630, rows A-Q plus STR and height); numbers read from the table image by the collector, images NOT stored)
