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.
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 Most makers do not publish it, so I assume 15 mm and add 6 mm to the band, which on its own is enough to hold an answer at "probably" rather than "fits".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.
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.
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.
Close Escape closes it. The measuring guide has the pictures. Open the measuring guide
Incolor Voyager
Gravel · 5 sizes
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This is the bike I ride
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- Bike
- Incolor Voyager · Gravel · 5 sizes · integrated cockpit
- Geometry
- en.incolor.vip, 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.The table runs on to the right: 6 more columns after Reach. Scroll it sideways to read them.
The 51 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.Generic stem and barAssumedNo bar is listed for this frame.
Stock stem and bar per size45 bar 380, 48 bar 380, 51 bar 380, 54 bar 380, 57 bar 380 (stem length x bar width, mm)
In the maker's words
Kept whole, as I read it off en.incolor.vip.INTEGRATED one-piece bar/stem: the frameset kit (Voyager product manual dated 260213, page 8) lists "GRAVEL frame/fork; GRAVEL integrated cockpit, carbon fiber seat post; lightweight aluminum accessory package".
Cockpit and seatpost, in the maker's words · 335 words
INTEGRATED one-piece bar/stem: the frameset kit (Voyager product manual dated 260213, page 8) lists "GRAVEL frame/fork; GRAVEL integrated cockpit, carbon fiber seat post; lightweight aluminum accessory package". The only gravel cockpit in Incolor's range is the AEROWAV GRAVEL GC1 (manual dated 251129, https://en.incolor.vip/uploads/upload/files/20260414/9a799b379a139ba7a2936f6dde546649.pdf; CNY 1380 sold separately): T800 carbon, 340 g; stem lengths (A) 80 / 90 / 100 / 110 mm; ONE width only, 380 mm at the tops/hoods (B, "把横上宽度") and 440 mm at the drops (C, "把横下宽度"), so the drops flare 30 mm per side; bar reach 70 mm; bar drop 115 mm; the bar top is raised 20 mm above the stem line ("等效+20mm堆高" = equivalent to +20 mm of stack); other dimensions printed on the drawing: 72.5 deg between stem axis and steerer axis (about 17.5 deg below perpendicular, so near-horizontal on the Voyager's 70-72 deg head angles), 37.5 (stem clamp height at the steerer, mm assumed), 20, 2.5, 10 deg and 3.0 deg (drops tilt) - the manual does not name these. Accessory pack: aluminium computer mount, top cap ("压盖"), stem bottom cover, and six 5 mm split spacers (30 mm total); the cockpit page reads "30mm 内圈 + 20mm 上抬" (30 mm of spacers plus 20 mm bar rise). Max steerer spacer height NOT published. No per-size stem length is stated anywhere (stock_stem_length left null); stock_bar_width 380 is the GC1's single top width, not a per-size choice. Headset: "1.5-inch headset" (upper and lower bearing sizes not stated beyond that). Seatpost: "27.2mm round seatpost" (web page) / "carbon fiber seat post" (manual); seatpost length and offset NOT published as text; the geometry drawing shows a "10" dimension at the seatpost head parallel to the seat tube axis, read as a 10 mm setback seatpost (assumption). Fork axle-to-crown 380 mm (drawing, all sizes); 700c wheels (drawing "Ø700"); max tyre 45C (32C max with a 52/36T double); 50T single or 52/36T double chainring; UDH dropout; T800 carbon, frame 850 g (size 54, unpainted, without metal parts); BB stiffness 190 N/mm claimed.
OFFICIAL SOURCE: https://en.incolor.vip/voyager (Guangzhou INCOLOR Sports Products Co., Ltd, English site) carries the geometry as a real HTML table (5 sizes, rows A-M) inside the "Highly Versatile Geometry" section. Source: html_table
How I read the maker's table
the Chinese site https://www.incolor.vip/voyager has the identical table ("VOYAGER几何表"); the page's "Click to view the original image" links to https://en.incolor.vip/uploads/upload/images/20260715/2904d5c5351949632ddf170f2c2f9cbb.jpg (diagram + table) and the inline diagram is https://en.incolor.vip/uploads/upload/images/20260710/332f01f85ca9f748e391a3f4aebd5298.png; the VOYAGER product manual PDF (https://en.incolor.vip/uploads/upload/files/20260414/472a9d471a13ad4c42c36dea51cf22da.pdf, dated 260213) page 7 prints the same table. All three agree on every number. No aggregator was consulted. SIZE NAMING: sizes are plain numbers 45 / 48 / 51 / 54 / 57 with recommended rider heights 155-162 / 162-168 / 167-173 / 172-178 / 177-186 cm; seat tube length is NOT published so the labels cannot be confirmed as seat tube lengths (assumed nominal cm). STACK/REACH DATUM: drawing B (stack) runs vertically from the BB centre to the horizontal at the top of the head tube; A (reach) runs horizontally from the vertical through the BB centre to the same head tube top point - the usual frame-only convention, headset not included. TOP TUBE: the HTML row is mis-lettered "G Top Tube Length" but the image/PDF letter it M and the Chinese table calls it "水平上管长度" (horizontal top tube length), i.e. effective/horizontal. E "Front Center" and F "Rear Center" are drawn axle-to-BB-centre direct distances; F = chainstay. L "Stand over" is drawn from the ground to the top of the top tube at mid-length. I "Front Fork Offset" is 53.7 mm on 45/48 and 49.7 mm on 51/54/57 (two forks); J "Trail" is printed by the maker, not derived. Fork axle-to-crown 380 mm is on the drawing only (no schema field). MODEL YEAR: Incolor does not use model years; the brand's own WeChat launch article "VOYAGER正式上市" (https://mp.weixin.qq.com/s/fnFsdNQ4O7W-fW1iW2L1vg) was published 2025-05-06, the manual is dated 2026-02-13 and the site table image was uploaded 2026-07-10/15 with the same numbers, so model_year 2025 = launch year, table current as of 2026-08-29. The page also has an ECharts stack/reach scatter labelled "Customization" (red) vs "Standard" (black); its black points (364/515, 370/520, 375/530, 385/535, 395/570) do NOT match the table, so it is treated as an illustration that Incolor offers custom geometry ("可定制几何"), not as data.
