Shimano GRX BR-RX810 Front Caliper
What the checker says9will not fit
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 854 verified gravel bike parts in this catalog. 842 produced no finding of any kind.
Will not fit
- Will not fiterror · Front RotorFront rotor not compatible with the caliper: the maker of the Shimano GRX BR-RX810 lists it as not compatible with 203mm rotors. On 4 of the 30 verified rotors in this catalog.
Rg brake fluid, Shifter/Brake Levers. 5 more findings from the same check, on up to 1 of the 17 verified shifter/brake levers each.
Rg brifter brake, Shifter/Brake Levers. 2 more findings from the same check, on up to 1 of the 17 verified shifter/brake levers each.
Rg brake rotor excluded, Front Rotor. 1 more finding from the same check, on up to 1 of the 30 verified rotors each.
Open a variant in the builder to see the ones that apply to your own parts.
$110.00 MSRP·141 g
What the maker states
- Mount
- flat-mount caliper
- Pistons
- 2-piston caliper
- Maximum rotor
- Rotor up to 180 mm
- Actuation
- Hydraulic
- Brake system
- Disc-flat
- Excludes rotor
- Excludes rotor: 203 and 220
The rest of what the maker states2 stated·4 not published
- Maximum rotor evidence: stated-exclusion.
- Brake fluid: mineral.
4 further fields the checker looks for are not published by Shimano, so we leave them blank rather than estimate them, and those 4 checks stay silent on this front caliper. They are brake closed system, lever makers, design rotor thickness and design rotor thickness maximum. Each is recorded as “not stated by the maker (not checked)”.
Source: the maker’s page. Last checked 2026-08-15.
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 Exploro Race (Frame) No conflicts found
- 3T Fango LTD (Fork) No conflicts found
- 8bar Gravel Carbon Disc Fork v2 (Fork) No conflicts found
- 9point8 Fall Line R (Dropper Post) No conflicts found
- Acros ZS44/28.6 | EC44/40 Headset (Headset) No conflicts found
- All-City Cosmic Stallion LTD (Frame) No conflicts found
6 of 497 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.