Commencal FCB Frame
What the checker says178will not fit10check before you buy32worth knowing
Run variant by variant through the gravel bike builder’s own engine. Every sentence below is the checker’s, unedited. Nothing here says this part fits your bike; it says what it does and does not fit among the parts we hold.
Checked against 789 verified gravel bike parts in this catalog. 582 produced no finding of any kind. Each variant produces 89 distinct errors and 6 distinct warnings.
Will not fit
- Will not fiterror · Front TireUnsupported wheel size: Commencal FCB Essential supports 700c, but this build is 650b. On 29 of the 137 verified tires in this catalog. Applies to 1 of 2 variants.
- Will not fiterror · Front TireUnsupported wheel size: Commencal FCB Origin supports 700c, but this build is 650b. On 29 of the 137 verified tires in this catalog. Applies to 1 of 2 variants.
- Will not fiterror · Rear TireUnsupported wheel size: Commencal FCB Essential supports 700c, but this build is 650b. On 29 of the 137 verified tires in this catalog. Applies to 1 of 2 variants.
- Will not fiterror · Rear TireUnsupported wheel size: Commencal FCB Origin supports 700c, but this build is 650b. On 29 of the 137 verified tires in this catalog. Applies to 1 of 2 variants.
- Will not fiterror · Rear WheelUnsupported wheel size: Commencal FCB Essential supports 700c, but this build is 650b. On 11 of the 68 verified rear wheels in this catalog. Applies to 1 of 2 variants.
- Will not fiterror · Rear WheelUnsupported wheel size: Commencal FCB Origin supports 700c, but this build is 650b. On 11 of the 68 verified rear wheels in this catalog. Applies to 1 of 2 variants.
- Will not fiterror · Front WheelUnsupported wheel size: Commencal FCB Essential supports 700c, but this build is 650b. On 8 of the 56 verified front wheels in this catalog. Applies to 1 of 2 variants.
- Will not fiterror · Front WheelUnsupported wheel size: Commencal FCB Origin supports 700c, but this build is 650b. On 8 of the 56 verified front wheels in this catalog. Applies to 1 of 2 variants.
Rg bb shell, Bottom Bracket. 46 more findings from the same check, on up to 1 of the 29 verified bottom brackets each.
Rg seatpost, Dropper Post. 34 more findings from the same check, on up to 4 of the 40 verified dropper posts each.
Rg seatpost, Seatpost. 30 more findings from the same check, on up to 1 of the 33 verified seatposts each.
Rg brake mount, Rear Caliper. 22 more findings from the same check, on up to 1 of the 27 verified calipers each.
Rg fd mount, Front Derailleur. 22 more findings from the same check, on up to 1 of the 11 verified front derailleurs each.
Rg steerer, Fork. 8 more findings from the same check, on up to 1 of the 30 verified forks each.
Rg xplr udh, Rear Derailleur. 6 more findings from the same check, on up to 1 of the 20 verified rear derailleurs each.
Rg rear axle, Rear Wheel. 2 more findings from the same check, on up to 1 of the 68 verified rear wheels each.
Open a variant in the builder to see the ones that apply to your own parts.
Check before you buy
- Check before you buywarning · Rear TireTire clearance: the 45mm tire is at the limit of the 47mm the maker states as a measured clearance. A printed tire width carries about 3mm of tolerance and grows with internal rim width, pressure and use, so measure your own clearance before buying. On 15 of the 137 verified tires in this catalog. Applies to all 2 variants.
- Check before you buywarning · Rear TireTire clearance: 50mm tire is wider than Commencal FCB Essential's 47mm frame max. On 11 of the 137 verified tires in this catalog. Applies to 1 of 2 variants.
- Check before you buywarning · Rear TireTire clearance: 50mm tire is wider than Commencal FCB Origin's 47mm frame max. On 11 of the 137 verified tires in this catalog. Applies to 1 of 2 variants.
- Check before you buywarning · Rear TireTire clearance: 55mm tire is wider than Commencal FCB Essential's 47mm frame max. On 4 of the 137 verified tires in this catalog. Applies to 1 of 2 variants.
- Check before you buywarning · Rear TireTire clearance: 55mm tire is wider than Commencal FCB Origin's 47mm frame max. On 4 of the 137 verified tires in this catalog. Applies to 1 of 2 variants.
- Check before you buywarning · Rear TireTire clearance: the 48mm tire is at the limit of the 47mm the maker states as a measured clearance. A printed tire width carries about 3mm of tolerance and grows with internal rim width, pressure and use, so measure your own clearance before buying. On 3 of the 137 verified tires in this catalog. Applies to all 2 variants.
- Check before you buywarning · Rear TireTire clearance: 56mm tire is wider than Commencal FCB Essential's 47mm frame max. On 2 of the 137 verified tires in this catalog. Applies to 1 of 2 variants.
- Check before you buywarning · Rear TireTire clearance: 56mm tire is wider than Commencal FCB Origin's 47mm frame max. On 2 of the 137 verified tires in this catalog. Applies to 1 of 2 variants.
Rg tire clearance, Rear Tire. 2 more findings from the same check, on up to 1 of the 137 verified tires each.
Open a variant in the builder to see the ones that apply to your own parts.
Worth knowing
Rg bb advisory, Crankset. 32 more findings from the same check, on up to 1 of the 32 verified cranksets each.
Open a variant in the builder to see the ones that apply to your own parts.
$1,900.00 to $2,300.00 MSRP·10400 g
What the maker states
- Rear axle
- 12x142
- Bottom bracket
- Bottom-bracket shell bsa-road
- Seatpost
- Takes a 27.2 mm seatpost
- UDH
- The maker does not state a UDH dropout
- Wheel sizes
- Built for 700c wheels
- Brake system
- Disc-flat
2 verified variants
| Variant | Price (MSRP) | Weight | Source | Last checked | Build |
|---|---|---|---|---|---|
| FCB Essential (2025) | $2,300.00 | 10400 g | maker’s page | 2026-09-04 | Build with this |
| FCB Origin (2025) | $1,900.00 | 10400 g | maker’s page | 2026-09-04 | Build with this |
The rest of what the maker states7 stated·4 not published
- Brake mount flat-mount.
- Steerer Tapered (1.5-1.125).
- Tire up to 47 mm on 700c (maker-stated maximum).
- Front-derailleur mount none.
- Maximum tire basis: clearance.
- Sold as a frameset, not a bare frame.
- alloy construction.
4 further fields the checker looks for are not published by Commencal, so we leave them blank rather than estimate them, and those 4 checks stay silent on this frame. They are maximum rear rotor, dropout type, drive mode and gearbox mount. Each is recorded as “not stated by the maker (not checked)”.
Source: each variant links the maker’s own page in the table above. Last checked 2026-09-04.
Checked against
The checker ran this model against every verified part below that it has a slot for, the same way it checks a build in the builder. What follows is the verdict it actually produced for that specific pairing — not a recommendation, and not a guarantee any of these parts fits your own bike.
- 3T Fango LTD (Fork) No conflicts found
- 8bar Gravel Carbon Disc Fork v2 (Fork) No conflicts found
- 9point8 Fall Line R (Dropper Post) Will not fit
- Acros ZS44/28.6 | EC44/40 Headset (Headset) No conflicts found
- BikeYoke Divine SL Rascal (Dropper Post) Will not fit
- BMC URS 01 D-Shaped Seatpost (Seatpost) Will not fit
6 of 442 counterparts with a page of their own that the checker actually probed this model against, in alphabetical order by brand and model — never by price, popularity or the verdict itself.