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 Most makers do not publish it, so I assume 10 mm and add 6 mm to the band beside every answer.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
Look 785 Huez and 785 Huez RS
Road · 5 sizes
The 785 Huez and 785 Huez RS on lookcycle.com
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
- Look 785 Huez and 785 Huez RS · Road · 5 sizes
- Geometry
- lookcycle.com, fetched 20 Oct 2026, re-checked, no differences
- Seat angle convention
- Calculated from Look'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.| Size | Stack (mm) | Reach (mm) | Head angle (deg) | Seat angle (deg) | Head tube (mm) | Chainstay (mm) | Wheelbase (mm)not published | Standover (mm) |
|---|---|---|---|---|---|---|---|---|
| XS | 519.2 | 365.3 | 71.5 | 74.5 | 94.4 | 410 | 709.9 | |
| S | 543.3 | 375.3 | 71.5 | 74.5 | 119.6 | 410 | 733.7 | |
| M | 567.3 | 385.6 | 73 | 74.5 | 140.7 | 410 | 761.7 | |
| L | 591.3 | 395.5 | 73 | 74.5 | 165.8 | 410 | 785.5 | |
| XL | 615.3 | 405.6 | 73 | 74.5 | 193.5 | 410 | 812.5 |
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
No stock cockpit I can name, so every size is solved on a generic stem and bar unless you choose one on the sheet.Look Combo Aero CarbonVendor-listedstem -7 · reach 75 · drop 120 · lengths 80-120 · widths 380-440
Stock stem and bar per sizeXS 90 x 400, S 100 x 400, M 110 x 420, L 110 x 420, XL 120 x 440 (stem length x bar width, mm)
Frame facts
read from the maker's words, not a table: lookcycle.com- Tyre clearance
- not recorded yet
- Bottom bracket
- not recorded yet
- Axles and brakes
- not recorded yet
- UDH
- not recorded yet
- Seatpost
- 27.2 mm round
- Frame weight
- not recorded yet
In the maker's words
Kept whole, as I read it off lookcycle.com.The 785 Huez RS page offers an "Aero Combo Cockpit" ("Buy the handlebar", "Buy the stem"; the Combo Aero Carbon bar: https://www.lookcycle.com/fr-en/products/components/handlebars/combo-aero-carbon-handlebar, reach 75 mm, drop 120 mm, widths 380/400/420/440, Combo Aero stem only).
Cockpit and seatpost, in the maker's words · 74 words
The 785 Huez RS page offers an "Aero Combo Cockpit" ("Buy the handlebar", "Buy the stem"; the Combo Aero Carbon bar: https://www.lookcycle.com/fr-en/products/components/handlebars/combo-aero-carbon-handlebar, reach 75 mm, drop 120 mm, widths 380/400/420/440, Combo Aero stem only). The 785 Huez 105 build lists two-piece alloy: Handlebar "LOOK LS2 ALLOY (XS S:40 M/L:42 XL:44)", Stem "LOOK LS3 ALLOY (XS 90 / S 100 / M L 110 / XL 120)", Seatpost "LOOK LS3 ALLOY 27.2 mm 350 mm".
OFFICIAL SOURCE: https://www.lookcycle.com/fr-en/products/bikes/road-bikes/altitude/785-huez-rs-frameset-new. Source: html table (official Look product page "785 HuezRS - Frameset", Geometry table; fetched 2026-10-20
How I read the maker's table
Look prints decimals with both commas and points (486,2 and 525.2) in one row; converted by script, numbers unchanged. No stack datum is stated in words (stack_datum null). The 785 Huez 105 page (https://www.lookcycle.com/fr-en/products/bikes/road-bikes/altitude/785-huez-proteam-white, fetched the same day, HTTP 200) prints exactly the same table, so this file covers the Huez and the Huez RS. Table heading "785 Huez RS"; the 105 page adds "Diametre des roues : 686 mm / 27 pouces". Rows kept here only: L - Fork 368 on every size. Stock tyre on the 105 build "HUTCHINSON CHALLENGER TUBETYPE 700x25" (tyre_width_mm 25). stock_stem_length and stock_bar_width are the 105 build's LS3 stem and LS2 bar per frame size. Model year not printed.
Source: html table (official Look product page "785 HuezRS - Frameset", Geometry table; fetched 2026-10-20, HTTP 200)