Atelier 700

Nobody walks into a bike shop asking for an 11-speed HG-splined 11–34T cassette. They point at the bit making a noise. This shop works the same way: pick a bike, pick the region, read what fits — with the two spec sheets we read to say so.

Every bike page lists its regions; every region page lists the parts that belong there with a verdict — fits, fits with an adapter, does not fit, or unknown. A bike we have not finished verifying says so at the top of its page, and only universal parts are sold for it.

Bikes

2025
Brompton C Line 12-speed (2025)not verified yet
Representative silhouette
Folding bike — representative silhouette: Folding. 2 of the 14 required fit measurements are on file (Brompton Bicycle); 0 are confirmed by two independent sources.
2025
Canyon Grail CF SL 7 (2025)not verified yet
Representative silhouette
Gravel bike — representative silhouette: Gravel. 10 of the 16 required fit measurements are on file (Canyon); 0 are confirmed by two independent sources.
2025
Canyon Ultimate CF 7 (2025)not verified yet
Representative silhouette
Road bike — representative silhouette: Road race. 11 of the 14 required fit measurements are on file (Canyon); 0 are confirmed by two independent sources.
2025
Giant Defy Advanced 2 (2025)not verified yet
Representative silhouette
Road bike — representative silhouette: Road endurance. 7 of the 14 required fit measurements are on file (Giant Bicycles); 0 are confirmed by two independent sources.
2024
Giant Escape 3 (2024)not verified yet
Representative silhouette
Commuter bike — representative silhouette: Flat-bar commuter. 11 of the 16 required fit measurements are on file (Giant Bicycles); 0 are confirmed by two independent sources.
2022
Giant Fathom 29 2 (2022)not verified yet
Representative silhouette
Trail mountain bike — representative silhouette: Trail hardtail. 9 of the 16 required fit measurements are on file (Giant Bicycles); 0 are confirmed by two independent sources.
2025
Giant Glory Advanced (2025)not verified yet
Representative silhouette
Downhill bike — representative silhouette: Downhill. 11 of the 16 required fit measurements are on file (Giant Bicycles); 0 are confirmed by two independent sources.
2027
Giant Propel Advanced 2 (2027)not verified yet
Representative silhouette
Road bike — representative silhouette: Aero road. 8 of the 14 required fit measurements are on file (Giant Bicycles); 0 are confirmed by two independent sources.
2021
Giant Reign 29 2 (2021)not verified yet
Representative silhouette
Enduro mountain bike — representative silhouette: Enduro full-suspension. 8 of the 16 required fit measurements are on file (Giant Bicycles); 0 are confirmed by two independent sources.
2025
Giant Revolt Advanced 2 (2025)not verified yet
Representative silhouette
Gravel bike — representative silhouette: Gravel. 7 of the 16 required fit measurements are on file (Giant Bicycles); 0 are confirmed by two independent sources.
2021
Giant Roam 2 Disc (2021)not verified yet
Representative silhouette
Hybrid bike — representative silhouette: Hybrid. 6 of the 16 required fit measurements are on file (Giant Bicycles); 0 are confirmed by two independent sources.
2025
Giant Talon 2 (2025)not verified yet
Representative silhouette
XC mountain bike — representative silhouette: XC hardtail. 10 of the 16 required fit measurements are on file (Giant Bicycles); 0 are confirmed by two independent sources.
2026
Giant Talon E+ (2026)not verified yet
Representative silhouette
Electric mountain bike — representative silhouette: E-bike MTB. 11 of the 16 required fit measurements are on file (Giant Bicycles); 0 are confirmed by two independent sources.
2023
Giant TCX Advanced Pro 2 (2023)not verified yet
Representative silhouette
Cyclocross bike — representative silhouette: Cyclocross. 6 of the 16 required fit measurements are on file (Giant Bicycles); 0 are confirmed by two independent sources.
2022
Giant Trance X 29 2 (2022)not verified yet
Representative silhouette
Trail mountain bike — representative silhouette: Trail full-suspension. 9 of the 16 required fit measurements are on file (Giant Bicycles); 0 are confirmed by two independent sources.
2015
Giant XTC Jr 24 (2015)not verified yet
Representative silhouette
Kids' bike — representative silhouette: Kids 24". 7 of the 14 required fit measurements are on file (Giant Bicycles); 0 are confirmed by two independent sources.
2025
Kona Sutra (2025)not verified yet
Representative silhouette
Touring bike — representative silhouette: Touring. 8 of the 16 required fit measurements are on file (Kona Bikes); 0 are confirmed by two independent sources.
2017
Liv Flourish 2 (2017)not verified yet
Representative silhouette
City bike — representative silhouette: City step-through. 8 of the 14 required fit measurements are on file (Liv Cycling); 0 are confirmed by two independent sources.
2024
State Bicycle Co. Core-Line (2024)not verified yet
Representative silhouette
Track / fixed-gear bike — representative silhouette: Track / fixed gear. 3 of the 10 required fit measurements are on file (State Bicycle Co.); 0 are confirmed by two independent sources.
2024
Surly Disc Trucker 700c (2024)not verified yet
Representative silhouette
Touring bike — representative silhouette: Touring. 13 of the 16 required fit measurements are on file (Surly Bikes); 0 are confirmed by two independent sources.
2025
Tern GSD S10 (2025)not verified yet
Representative silhouette
Cargo e-bike — representative silhouette: Cargo longtail. 10 of the 16 required fit measurements are on file (Tern Bicycles); 0 are confirmed by two independent sources.
2025
Tern Quick Haul D8 (2025)not verified yet
Representative silhouette
City e-bike — representative silhouette: E-bike city. 7 of the 16 required fit measurements are on file (Tern Bicycles); 0 are confirmed by two independent sources.
2025
woom GO 4 (2025)not verified yet
Representative silhouette
Kids' bike — representative silhouette: Kids 20". 7 of the 14 required fit measurements are on file (woom); 0 are confirmed by two independent sources.

Parts

Bottom brackets
Bottom brackets by shell standard and the crank spindle they provide.
Brake calipers
Calipers and levers by mount standard and actuation — every brake dimension is safety-critical.
Brake pads
Brake pads by caliper family — the shape is the fit, and the caliper on the bike decides it.
Cassettes
Cassettes by speed count and freehub body, each with the largest-cog limit it asks of the rear derailleur.
Chain guides
Chain guides by ISCG tab standard.
Chains
Bicycle chains by speed standard — the one fact that decides whether a chain runs on your cassette.
Cranksets & chainrings
Cranksets by spindle standard, and chainrings by bolt circle or direct mount.
Rear derailleurs
Rear derailleurs by speed count and actuation, with the largest cog each one reaches.
Handlebars
Handlebars by stem-clamp diameter (and the tape that goes on them).
Headsets
Headsets by upper and lower cup standard (S.H.I.S.).
Pedals
Pedals by spindle thread — 9/16" on adult cranks, 1/2" on one-piece and many kids' cranks.
Brake rotors
Disc rotors by diameter and interface. Diameter is a safety-critical fit: the fork and frame state a maximum.
Seat clamps
Seat collars by the outside diameter of the seat tube.
Seatposts
Rigid and dropper seatposts by diameter and shape.
Stems
Stems by handlebar clamp and steerer clamp — two safety-critical diameters.
Inner tubes
Inner tubes by wheel size.
Tyres
Tyres by ISO bead seat and width, checked against the frame clearance on file.
Workshop & accessories
Lube, tools, bottle cages and the other universal parts that fit any bicycle.

The Journal

What We Still Don't Know About the Grail CF SL 7
The Canyon Grail CF SL 7 (2025) sits in our fleet with one source behind each fact and no second publisher agreeing yet. Here is what that means, which answers still stand, which ones wait, and what would change them.
SRAM DUB bottom brackets, sorted by shell
Five SRAM DUB bottom brackets sit in the drawer. They all hand the crank the same spindle interface; what separates them is the frame shell they need. Here is each one by its numbers, plus the one projected verdict we have on file against a bike in the fleet.
The Cassette Shelf, Counted Cog by Cog
Five cassettes are on file in the archive: one nine-speed microSHIFT, one twelve-speed Shimano, and three SRAM eleven-speed options. This guide lays out the three numbers that separate them — freehub body, rear speeds, and the smallest rear derailleur capacity they demand — and says plainly which bike in the fleet they do and do not fit.
Why your 11-speed chain fits — and the 12-speed one does not
Chain compatibility comes down to one standard most boxes print as a speed count: the chain width. Here it is for the two KMC chains people ask about most, and what it means on an 11-speed and on a 12-speed bike from the fleet.
The Giant Escape 3, As Far As Our Paper Goes
A plain accounting of the Giant Escape 3 (2024): the measurements we have on file, the ones we do not, the three regions worth reading before you buy, and four listed parts with their projected verdicts.
Rear Wheel of the Giant Fathom 29 2: What Bolts On
A region guide to the rear wheel of the Giant Fathom 29 2 (2022): the cited frame and wheel facts we hold, the two Maxxis parts projected to fit, why each verdict lands where it does, and the measurements that are still missing from the file.
The Glory Advanced Is on File, Not Yet Verified
Every fact we hold on the Giant Glory Advanced (2025) comes from a single cited source. That is enough to answer some questions and not enough to answer others. Here is exactly which is which, and what would move a line from unknown to answered.
Setting Up a Rear Derailleur on the Bench at Home
A plain bench procedure for hanging, limiting, indexing and clutch-checking a rear derailleur at home, plus the three rear derailleurs the shop lists and how they read against the Canyon Grail CF SL 7 (2025).
Swapping a Cassette at Home, Without Guesswork
A bench procedure for removing and installing a rear cassette, the spec rows that decide which cassette you can even buy, and the three cassette pages the shop lists — including why all three are projected not to fit the Canyon Grail CF SL 7 (2025).
The e12 chain and the Grail: a clean match on the drivetrain
The KMC e12 e-bike chain, 12-speed fits the Canyon Grail CF SL 7 (2025). The chain standard on the bike's sheet matches the chain standard the part requires. Here is the reasoning, the rows behind it, and what happens when you bring an older chain to the same drivetrain.
The KMC X10, and the one thing it asks of your bike
The KMC X10 chain, 10-speed has a single requirement: a 10-speed drivetrain. We read the spec rows, then check it against the two bikes on file with the same chain standard — the Giant Fathom 29 2 (2022) and the Kona Sutra (2025). Both come back as fits, on derived facts.
The X9 and the Roam: one chain, one answer
The KMC X9 chain, 9-speed fits the Giant Roam 2 Disc (2021). The chain standard on the bike matches the chain standard the part asks for, and both facts are on file. Here is the reasoning, the spec rows behind it, and the chain that does not fit.
Rotor size is a safety question, not a taste
A bigger rotor brakes harder. It also loads the fork mount beyond what it was tested for when it exceeds the fork maximum. Here is why a rotor reads "unknown" on a single-sourced bike, "does not fit" when the interface is wrong, and "unknown — safety-critical" when the maximum is not on file.
The 1.85 mm spacer: the cassette that confuses everyone
An 8/9/10-speed cassette on an 11-speed road freehub: why there is a gap, why a 1.85 mm ring fills it, how the resolver treats that ring — and why the page can still say "unknown" after the freehub question is settled.
DUB: One Spindle, Four Shells
SRAM DUB is a crank spindle standard measured at 28.99 mm. Here is what that number does mechanically, which bottom brackets in our archive carry it, and why the shell in your frame — not the spindle — decides what you can buy.
What "unknown" means in this shop
A bike we have not verified stays on the floor with a sign on it, not in the back room. Here is what that sign says, with the Brompton C Line as the live example, and why we would rather lose the sale than guess.