Look sizes its gravel bikes XS to XL and publishes a single rider height chart for the whole range. That chart is convenient and slightly misleading. The three current gravel frames share the size labels but not the fit: at size M, the G85 Cezal carries 12 mm more stack and 5 mm more reach than the 765 Gravel RS. Read the per model tables below before you trust the shared chart.
One point of clarification, because the model names cause confusion. Look sells the bikes as 765 Gravel RS, but the geometry chart on the page is headed 765 Gravel. There is one frame and one set of numbers, not two. The current lead gravel model is the G85 Cezal; the 765 Gravel RS is down to a single catalogue colour plus outlet stock. Browse all Look bikes at Bikeroom.
Please note. The size suggestions below are indicative only, a starting point rather than a guarantee. Look's own size guide carries the same warning, asking riders to contact a dealer for more precise sizing. Torso length, arm length and flexibility all shift the answer, so confirm with a bike fit or with our team before you buy.
Quick size finder
The height column is Look's own published chart, reproduced as Look writes it. The inseam column is a Bikeroom estimate, because Look does not publish inseam bands. Note that the three model columns are identical: Look applies one chart to the whole gravel range, so the label matches across models while the fit does not.
| Rider height | Leg length (inseam) | G85 Cezal | 765 Gravel RS | E-765 Gravel |
|---|---|---|---|---|
| under 164 cm | under 73 cm | XS | XS | XS |
| 164 to 168 cm | 73 to 77 cm | XS or S | XS or S | XS or S |
| 168 to 173 cm | 77 to 80 cm | S | S | S |
| 173 to 178 cm | 80 to 84 cm | M | M | M |
| 178 to 180 cm | 84 to 85 cm | M or L | M or L | M or L |
| 180 to 185 cm | 85 to 88 cm | L | L | L |
| 185 to 187 cm | 88 to 90 cm | L or XL | L or XL | L or XL |
| 187 cm and up | 90 cm and up | XL | XL | XL |
Look's published bands overlap by two to three centimetres at every step, which is why several rows offer two answers. Where height and inseam disagree, follow the inseam: it sets saddle height and standover, which a frame size cannot be adjusted around.
How to measure yourself
Height. Stand barefoot against a wall, heels together, eyes level. Rest a flat book on your head, keep it square to the wall, mark the edge and measure from the floor.
Leg length (inseam). Barefoot, feet about 15 cm apart, press a book spine up between your legs as if it were a saddle. Keep it level against the wall, mark the top edge, measure from the floor to the mark.
The quick formula. The inseam times 0.66 rule only applies to brands that label frames in centimetres of seat tube. Look uses XS to XL on its gravel bikes, so the formula gives you nothing here. Work from the geometry tables.
G85 Cezal (current gravel flagship)
Named after the Cezallier plateau in the Massif Central, the G85 Cezal is Look's fast and versatile gravel frame, quoted at 1,150 g for the frameset in size M including the toolbox pouch. Five sizes, XS to XL. Clearance is up to 50 mm, or 45 mm in a double chainring configuration, and the frame accepts a suspension fork up to 60 mm of travel. Chainstays are 425 mm at every size.
| Size | Stack (mm) | Reach (mm) | Head angle | Rider height (Look) |
|---|---|---|---|---|
| XS | 547 | 360 | 69.5 | under 166 cm |
| S | 566 | 370 | 69.5 | 164 to 173 cm |
| M | 590 | 380 | 70 | 171 to 180 cm |
| L | 614 | 390 | 70 | 178 to 187 cm |
| XL | 638 | 400 | 70.5 | 185 cm and up |
Official Look geometry, model year not published. Reach grows in exact 10 mm steps and stack in steps of 19 to 24 mm, so the range scales cleanly. The tallest and longest of the three Look gravel frames, and the slackest at the small sizes.
765 Gravel RS (sporty endurance)
Look describes the 765 Gravel RS as a carbon frame with sporty endurance geometry, built to cover gravel racing, ultra distance and bikepacking on one platform. Five sizes, XS to XL, with 420 mm chainstays and a head angle of 70.3 degrees at every size. Look publishes clearance as 700x40 or 650B x 2.1, and one product page bullet states 40 mm as the only limit. Treat 40 mm as the working figure on 700c.
| Size | Stack (mm) | Reach (mm) | Seat angle | Rider height (Look) |
|---|---|---|---|---|
| XS | 530 | 355 | 74 | under 166 cm |
| S | 554 | 365 | 74 | 164 to 173 cm |
| M | 578 | 375 | 73 | 171 to 180 cm |
| L | 602 | 385 | 73 | 178 to 187 cm |
| XL | 626 | 395 | 73 | 185 cm and up |
Official Look geometry, model year not published. Stack rises in perfectly even 24 mm steps and reach in 10 mm steps. Note the seat angle drop from 74 to 73 degrees between S and M, which moves the saddle slightly further back on the three larger sizes.
Against the G85 Cezal, the 765 is consistently 12 to 17 mm lower in stack and 5 mm shorter in reach at the same label. A rider on a 765 Gravel RS in M who moves to a G85 Cezal in M will sit higher at the bars and marginally further forward from the bottom bracket.
E-765 Gravel (e-gravel)
The E-765 Gravel pairs Look's gravel platform with the Fazua Ride 60 drive unit, quoted at 13.7 kg in size M as an indicative weight. Five sizes, XS to XL, with 430 mm chainstays, a 70.8 degree head angle and clearance stated at 42 mm. It is suspension fork ready.
| Size | Stack (mm) | Reach (mm) | Chainstay (mm) | Rider height (Look) |
|---|---|---|---|---|
| XS | 544.2 | 355.1 | 430 | under 166 cm |
| S | 568.2 | 365 | 430 | 164 to 173 cm |
| M | 592.1 | 375 | 430 | 171 to 180 cm |
| L | 616.1 | 385.1 | 430 | 178 to 187 cm |
| XL | 641.2 | 394.8 | 430 | 185 cm and up |
Official Look geometry, model year not published. Reach is effectively identical to the 765 Gravel RS, while stack sits about 14 to 15 mm higher at every size. The same bar position therefore needs fewer spacers on the e-bike.
What Look publishes and what it does not
Three gaps are worth knowing before you compare a Look against another brand on a spreadsheet.
- Wheelbase is not published for any of the three frames. Look prints front centre instead, the distance from the bottom bracket to the front axle. It is not the same measurement, so do not put it in a wheelbase column.
- Model year is not published on any geometry chart. Look states no year next to the numbers, so the figures here are simply what the brand publishes today.
- Inseam bands are not published. Look's size guide works on height alone, which is why the inseam column above is our estimate.
What riders say about Look gravel sizing
Independent feedback is limited, and almost all of it concerns the 765 rather than the newer G85 Cezal. Two reviewers describe the same fit, which is the one pattern worth acting on.
Two testers on a Medium reported the same shape. Reviewing the 765 Gravel RS for road.cc on 9 February 2022, Stu Kerton found it taller at the front and shorter in the top tube than a road bike. Joe Robinson reached the same conclusion for Cyclist on 12 January 2022, describing a high stack with a short reach.
A rider of 180 cm was comfortable on the M. Kerton gives his own height as 180 cm and his weight as 76 kg, and tested the Medium, which Look also labels 55. Look's chart puts 180 cm at the top of the M band and already inside the L band, so the smaller of the two worked for him.
Standover is worth checking on the G85 Cezal. In her first ride review for Cycling Weekly on 30 June 2026, Anne-Marije Rook listed tall standover height among the reasons to avoid the bike, and named shorter riders as the group affected.
Beyond that, there is little. The one owner thread we found, on the Riding Gravel forum from 13 February 2021, never puts a height next to a size, and we found no sizing feedback on the E-765 Gravel. We would rather say so than fill the gap with invention.
Between two sizes?
Look's own guidance is to ask a dealer, which is a fair answer given how much the bands overlap. The standard trade-off still applies. The smaller frame sits lower and shorter, steers faster and suits a shorter torso. The larger frame is more stable on loose descents and easier on the back over long days.
Two Look specifics matter. First, the 765 Gravel RS and E-765 Gravel are among the taller gravel frames at a given reach. Riders who want a low front end often run a negative rise stem rather than sizing down. Second, the seat angle steps from 74 to 73 degrees between S and M on the 765, which changes saddle fore and aft as well as reach. Our guide to stem length explains how much a stem can realistically correct.
Shop Look at Bikeroom
- Look bikes for the full range in stock
- Look France for the wider French brand selection
- Gravel bikes to compare the 765 against other gravel frames
- Pre-owned gravel bikes where earlier 765 Gravel builds usually appear
For Look's road geometry, which uses a different chart, see our Look road bike size guide. For a brand that runs one unified race fit across road and gravel, compare the Factor gravel size guide.
If you sit at 179 cm and Look's chart offers you both M and L, talk to our concierge and we will work through the stack and reach with you.
Disclaimer: the size suggestions here are indicative and offered as general guidance, not as a fitting guarantee. Stack, reach, angle and chainstay figures are official Look manufacturer data taken from lookcycle.com, which states no model year next to its charts. Rider height bands are Look's own published chart; inseam bands are estimated by Bikeroom. Geometry can change between model years, so confirm against the exact bike you are buying.
Sources: Look G85 Cezal frameset geometry; Look 765 Gravel range page; Look 765 Gravel RS geometry; Look E-765 Gravel, all read 21 September 2026; road.cc, Look 765 Gravel RS Disc review, 9 February 2022; Cyclist, Look 765 Gravel RS review, 12 January 2022; Cycling Weekly, Look G85 Cezal first ride, 30 June 2026; Riding Gravel forum thread, 13 February 2021.
