TRP HY/RD Front Caliper
What the checker says24will not fit
Run variant by variant through the road 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 1025 verified road bike parts in this catalog. 995 produced no finding of any kind; that is HY/RD (Flat Mount). HY/RD (Post Mount) clears 991. Each variant produces 7 to 20 distinct errors and 0 distinct warnings.
Will not fit
- Will not fiterror · Front WheelBrake system mismatch: Front wheel = rim, Front brake = disc. Disc and rim-brake parts do not mix on one build. On 7 of the 101 verified front wheels in this catalog. Applies to all 2 variants.
- Will not fiterror · Rear WheelBrake system mismatch: Rear wheel = rim, Front brake = disc. Disc and rim-brake parts do not mix on one build. On 7 of the 112 verified rear wheels in this catalog. Applies to all 2 variants.
- Will not fiterror · Front RotorFront rotor too big for the caliper as recorded here: 180mm is larger than 160mm, the largest rotor size this catalog records for the TRP HY/RD (Flat Mount) caliper. The caliper maker's own rotor chart is the place to check. The flat-mount system has no size-up bracket, so no adapter can step it up. On 5 of the 38 verified rotors in this catalog. Applies to 1 of 2 variants.
- Will not fiterror · Front RotorFront rotor too big for the caliper as recorded here: 203mm is larger than 160mm, the largest rotor size this catalog records for the TRP HY/RD (Flat Mount) caliper. The caliper maker's own rotor chart is the place to check. The flat-mount system has no size-up bracket, so no adapter can step it up. On 5 of the 38 verified rotors in this catalog. Applies to 1 of 2 variants.
- Will not fiterror · Shifter/Brake LeversBrake system mismatch: Levers = rim, Front brake = disc. Disc and rim-brake parts do not mix on one build. On 3 of the 25 verified shifter/brake levers in this catalog. Applies to all 2 variants.
- Will not fiterror · Front RotorFront rotor too big for the caliper as recorded here: 200mm is larger than 160mm, the largest rotor size this catalog records for the TRP HY/RD (Flat Mount) caliper. The caliper maker's own rotor chart is the place to check. The flat-mount system has no size-up bracket, so no adapter can step it up. On 2 of the 38 verified rotors in this catalog. Applies to 1 of 2 variants.
Rg brake mount, Fork. 17 more findings from the same check, on up to 1 of the 17 verified forks each.
Rg brake rotor max, Front Rotor. 1 more finding from the same check, on up to 1 of the 38 verified rotors each.
Open a variant in the builder to see the ones that apply to your own parts.
$149.99 MSRP·205 g
What the maker states
- Mount
- flat-mount caliper (on 1 of 2 variants); post-mount caliper (on 1 of 2 variants)
- Pistons
- 2-piston caliper
- Maximum rotor
- Rotor up to 160 mm (on 1 of 2 variants)
- Brake system
- Disc-mechanical
- Actuation
- Mechanical
A value shown as a set or a range differs between this model’s variants and is never one variant’s spec.
2 verified variants
| Variant | Mount | Maximum rotor | Price (MSRP) | Weight | Source | Last checked | Build |
|---|---|---|---|---|---|---|---|
| HY/RD (Flat Mount) | flat-mount caliper | Rotor up to 160 mm | $149.99 | 205 g | maker’s page | 2026-08-19 | Build with this |
| HY/RD (Post Mount) | post-mount caliper | not stated | $149.99 | 205 g | maker’s page | 2026-08-19 | Build with this |
The rest of what the maker states1 not published
1 further field the checker looks for is not published by TRP, so we leave it blank rather than estimate it, and that check stays silent on this front caliper. It is reach. 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 2026-08-19.
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 Aeroflux Integrale (Handlebar) No conflicts found
- 3T Apto Stealth Stem (Stem) No conflicts found
- 3T Superergo LTD (standard, non-INTEGRALE) (Handlebar) No conflicts found
- All-City Zig Zag Frameset (Frame) No conflicts found
- Argon 18 SUM D-Shape Seatpost (Seatpost) No conflicts found
- Argon 18 Sum Frameset (Frame) No conflicts found
6 of 690 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.