TRP Hylex Front Caliper
What the checker says33will 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 831 verified gravel bike parts in this catalog. 818 produced no finding of any kind; that is Hylex (Flat Mount). Hylex (Post Mount) clears 799. Each variant produces 5 to 28 distinct errors and 0 distinct warnings.
Will not fit
- 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 Hylex (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 6 of the 30 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 Hylex (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 4 of the 30 verified rotors in this catalog. Applies to 1 of 2 variants.
- Will not fiterror · ForkFront brake mount: TRP Hylex (Post Mount) is a post-mount caliper and RockShox Rudy Ultimate XPLR has a flat mount - two different mounting standards, so the caliper does not bolt on as it is. The part that bridges them is a rotor-size-specific flat-mount-to-post-mount adapter. A shim or adapter may make other sizes or standards work, but that is a modification, not a fit. On 2 of the 30 verified forks in this catalog. Applies to 1 of 2 variants.
- Will not fiterror · ForkFront brake mount: TRP Hylex (Post Mount) is a post-mount caliper and RockShox Rudy XL Ultimate has a flat mount - two different mounting standards, so the caliper does not bolt on as it is. The part that bridges them is a rotor-size-specific flat-mount-to-post-mount adapter. A shim or adapter may make other sizes or standards work, but that is a modification, not a fit. On 2 of the 30 verified forks in this catalog. Applies to 1 of 2 variants.
- Will not fiterror · ForkFront brake mount: TRP Hylex (Post Mount) is a post-mount caliper and RockShox Rudy XL has a flat mount - two different mounting standards, so the caliper does not bolt on as it is. The part that bridges them is a rotor-size-specific flat-mount-to-post-mount adapter. A shim or adapter may make other sizes or standards work, but that is a modification, not a fit. On 2 of the 30 verified forks in this catalog. Applies to 1 of 2 variants.
- Will not fiterror · ForkFront brake mount: TRP Hylex (Post Mount) is a post-mount caliper and RockShox Rudy XPLR (Base) has a flat mount - two different mounting standards, so the caliper does not bolt on as it is. The part that bridges them is a rotor-size-specific flat-mount-to-post-mount adapter. A shim or adapter may make other sizes or standards work, but that is a modification, not a fit. On 2 of the 30 verified forks in this catalog. Applies to 1 of 2 variants.
Rg brake mount, Fork. 22 more findings from the same check, on up to 1 of the 30 verified forks each.
Rg brifter brake, Shifter/Brake Levers. 4 more findings from the same check, on up to 1 of the 17 verified shifter/brake levers each.
Rg brake rotor max, 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.
$242.99 MSRP·429 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)
- Actuation
- Hydraulic
- Brake system
- Disc-flat (on 1 of 2 variants); Disc-post (on 1 of 2 variants)
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 | Brake system | Price (MSRP) | Weight | Source | Last checked | Build |
|---|---|---|---|---|---|---|---|---|
| Hylex (Flat Mount) | flat-mount caliper | Rotor up to 160 mm | disc-flat | $242.99 | 429 g | maker’s page | 2026-08-10 | Build with this |
| Hylex (Post Mount) | post-mount caliper | not stated | disc-post | $242.99 | 429 g | maker’s page | 2026-08-10 | Build with this |
Source
Source: each variant links the maker’s own page in the table above. Last checked 2026-08-10.
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) Will not fit
- 8bar Gravel Carbon Disc Fork v2 (Fork) Will not fit
- 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 481 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.