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 Most makers do not publish it, so I assume 10 mm and add 6 mm to the band beside every answer.
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 hands sit than your saddle. On a riser bar I count the bar's rise, so the drop is that much less than it is to the clamp.
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
Liv Langma Advanced / Advanced Pro / Advanced SL
Road · 5 sizes
The Langma Advanced / Advanced Pro / Advanced SL on liv-cycling.com
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This is the bike I ride
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- Bike
- Liv Langma Advanced / Advanced Pro / Advanced SL · Road · 5 sizes
- Versions
- 2027, this table · 2022 · 2021
- Geometry
- liv-cycling.com, fetched 20 Oct 2026, re-checked, no differences
- Seat angle convention
- Calculated from Liv'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.The table runs on to the right: 6 more columns after Reach. Scroll it sideways to read them.
The S 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.
Stock stem and bar per sizeXXS 80 x 360, XS 80 x 360, S 90 x 380, M 100 x 400, L 110 x 420 (stem length x bar width, mm)
Frame facts
not read off the maker's page yet: liv-cycling.com- Tyre clearance
- not recorded yet
- Bottom bracket
- not recorded yet
- Axles and brakes
- not recorded yet
- UDH
- not recorded yet
- Seatpost
- not recorded yet
- Frame weight
- not recorded yet
In the maker's words
Kept whole, as I read it off liv-cycling.com.Per tier, from the Liv UK 2027 spec lines.
Cockpit and seatpost, in the maker's words · 128 words
Per tier, from the Liv UK 2027 spec lines. Langma Advanced 1-PC (this page): Handlebar "Liv Contact XXS: 340/360mm, XS: 340/360mm, S: 360/380mm, M: 370/400mm, L: 390/420mm"; Stem "Giant Contact AeroLight, -10-degree XXS: 80mm, XS: 80mm, S: 90mm, M: 100mm, L: 110mm" (stem angle -10). Langma Advanced Pro 1-PC (https://www.liv-cycling.com/gb/langma-advanced-pro-1-pc-2027): Handlebar "Liv Contact SL 31.8mm, 8-degree flare drop", same widths; Stem "Giant Contact SL AeroLight, -10-degree", same lengths. Langma Advanced SL 0 (https://www.liv-cycling.com/gb/langma-advanced-sl-0-2027): Handlebar "CADEX one-piece" while its Stem line reads "Giant Contact SLR Aerolight, -10 degree" (the page gives both). The geometry table's Handlebar Width row prints the second number of each pair (360/360/380/400/420) and its Stem Length row 80/80/90/100/110. Seatpost: Advanced and Pro "Giant Variant, composite, -5/+15mm offset"; SL "Advanced SL-Grade Composite, Integrated Design Offset -5/+15mm".
OFFICIAL SOURCE: Liv UK page for the Langma Advanced 1-PC (2027), title "Langma Advanced 1-PC (2027) | Women Race bike | Liv Cycling UK". Source: html table (official Liv Cycling UK bike page, section "Sizing Guide and Geometry", the HTML <table class="geometry"> with mm and inch spans; fetched 2026-10-20
How I read the maker's table
Liv is Giant's women's brand; the Langma is its race bike. Five sizes XXS, XS, S, M, L. The Langma Advanced Pro 1-PC (2027) page prints the identical table in every cell. The Langma Advanced SL 0 (2027) page prints the same stack, reach, angles, top tube, head tube, wheelbase, chainstay and standover but leaves out the seat tube, fork rake, trail, BB drop, handlebar width and stem length rows (the SL has an integrated seat mast). Stock tyre "Giant Gavia Course 0, tubeless, 700x30c (30mm), folding"; the SL page prints "Max Tyre Clearance: 700x33mm". Angles printed to one decimal (74.0 is recorded as 74).
Source: html table (official Liv Cycling UK bike page, section "Sizing Guide and Geometry", the HTML <table class="geometry"> with mm and inch spans; fetched 2026-10-20, HTTP 200)