Industry Nine Hydra2 Front Hub
What the checker says17will not fit
Run variant by variant through the mountain 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 6134 verified mountain bike parts in this catalog. 5989 produced no finding of any kind; that is Hydra2 front hub (Boost 15x110). Hydra2 20x110 Non-Boost front hub clears 5581. Each variant produces 6 distinct errors and 0 distinct warnings.
Will not fit
- Will not fiterror · ForkFront axle mismatch: Fork is Boost 15x110 but Front wheel hub is 20x110 Boost (DH). On 410 of the 490 verified forks in this catalog. Applies to 1 of 4 variants.
- Will not fiterror · ForkFront axle mismatch: Fork is Boost 15x110 but Front wheel hub is 20x110 standard (DH, non-Boost). On 410 of the 490 verified forks in this catalog. Applies to 1 of 4 variants.
- Will not fiterror · Front RotorFront rotor: a 6-bolt rotor does not mount on a Center Lock front hub as it is - the two use different rotor interfaces. The part that bridges them is a Center Lock adapter, and the ones makers publish fit one-piece rotors only. A shim or adapter may make other sizes or standards work, but that is a modification, not a fit. On 112 of the 177 verified rotors in this catalog. Applies to 1 of 4 variants.
- Will not fiterror · Front RotorFront rotor interface mismatch: Center Lock rotor on 6-bolt front hub - no adapter exists for this direction. On 65 of the 177 verified rotors in this catalog. Applies to 3 of 4 variants.
- Will not fiterror · ForkFront axle mismatch: Fork is 20x110 Boost (DH) but Front wheel hub is Boost 15x110. On 56 of the 490 verified forks in this catalog. Applies to 2 of 4 variants.
- Will not fiterror · ForkFront axle mismatch: Fork is 20x110 Boost (DH) but Front wheel hub is 20x110 standard (DH, non-Boost). On 56 of the 490 verified forks in this catalog. Applies to 1 of 4 variants.
Front axle, Fork. 11 more findings from the same check, on up to 14 of the 490 verified forks each.
Open a variant in the builder to see the ones that apply to your own parts.
$240.00 MSRP·139 to 299 g
What the maker states
- Rotor mount
- 6-bolt (on 3 of 4 variants); Center Lock (on 1 of 4 variants)
- Hub
- Spacing Boost 15x110 (on 2 of 4 variants); Spacing 20x110 Boost (DH) (on 1 of 4 variants); Spacing 20x110 standard (DH, non-Boost) (on 1 of 4 variants)
A value shown as a set or a range differs between this model’s variants and is never one variant’s spec.
4 verified variants
| Variant | Rotor mount | Hub | Price (MSRP) | Weight | Source | Last checked | Build |
|---|---|---|---|---|---|---|---|
| Hydra2 20x110 Boost front hub | 6-bolt | spacing 20x110 Boost (DH) | $240.00 | 157 g | maker’s page | 2026-08-19 | Build with this |
| Hydra2 20x110 Non-Boost front hub | 6-bolt | spacing 20x110 standard (DH, non-Boost) | $240.00 | 299 g | maker’s page | 2026-08-19 | Build with this |
| Hydra2 front hub (Boost 15x110) | 6-bolt | spacing Boost 15x110 | $240.00 | 157 g | maker’s page | 2026-09-03 | Build with this |
| Hydra2 front hub (Boost 15x110, Center Lock) | Center Lock | spacing Boost 15x110 | $240.00 | 139 g | maker’s page | 2026-09-03 | Build with this |
The rest of what the maker states1 not published
1 further field the checker looks for is not published by Industry Nine, so we leave it blank rather than estimate it, and that check stays silent on this front hub. It is maximum system weight. 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 to 2026-09-03.
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.
- 5DEV R-SPEC Trail/Enduro Cranks (Crankset) No conflicts found
- 9point8 Fall Line (Dropper Post) No conflicts found
- 9point8 Stout (31.8, 30mm) (Stem) No conflicts found
- ACID SLX 30 front (Front Wheel) No conflicts found
- ACID SLX 30 rear (Rear Wheel) No conflicts found
- Acros ZS44/ZS56 (Headset) No conflicts found
6 of 1885 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.