ONYX VESPER FRONT ISO 6 BOLT DISC HUB

Design and construction

Onyx designs, machines and assembles in the USA, and treats color as part of the product rather than a finishing option: more than twenty anodized colors are cataloged, with a further limited color released each month that is gone once it sells through.

Because the front Vesper has no freehub, it is the hub that asks for the least: a spin of the axle to check the bearings once a season and nothing else. The flanges, bearings and seals are the same as the rear's, the axle converts between the front standards with end caps, and the rotor mounts the same way. Choose it to match a rear of the same model, or on its own for a fork that needs a new front wheel.

How it rides

On a technical climb or a trials move there is no dead stroke, and because the clutch locks across its whole face there is no harshness either.

We build the Vesper for cross-country, trail and enduro wheels; for downhill and e-bikes the Onyx Classic is the heavier-duty version.

A front wheel is where you feel a hub least and a build most. With no drive torque to carry, the front Vesper can be laced two-cross or even radial on the non-rotor side on a rim-brake bike, which makes a lighter, more direct-feeling wheel; on a disc bike we lace both sides crossed so the rotor's braking torque has spokes to pull against. Either way the front wheel is the one that steers, and a stiff, true front wheel is most of what makes a bike feel precise.

Specifications

This listing

This is the 6-bolt version: QR 5x100mm, Thru Axle 12x100mm, Thru Axle 15x100mm, Thru Axle 15x110mm Boost and more, 24h, 28h, 32h drilling, about 177g, in baby blue pc, black ano, black aura pc, black matte ano, blu. Same internals and flanges as every other Vesper; only the mount and axle differ.

Six-bolt is the original disc mount and still the most universal: any ISO 6-bolt rotor from any brand bolts straight on, rotors are cheap and easy to find anywhere, and the six-bolt flange is a robust, simple interface that has been on mountain bikes for twenty-five years. Centerlock rotors do not fit it.

Sizes, fit and compatibility

J-bend spokes in any gauge; we build most Vesper wheels with Sapim Race, D-Light or CX-Ray spokes or DT Competition and brass nipples.

It pairs naturally with Reserve, Nox, We Are One, ENVE, DT Swiss, Race Face and Stan's rims that match its drilling. Give the configurator your bike type and weight; it picks a sensible spoke count and lacing pattern, which you can override.

Build a wheel around it

Offered for gravel and road disc, mountain bike, MTB single-speed and fat bike builds in our Custom Wheel Program. Start with the Onyx Vesper Front ISO 6 Bolt Disc Hub and the configurator pins it for you, then checks each choice you make against it.

Building it at ProWheelBuilder

Onyx makes the Vesper in Minnesota; ProWheelBuilder is an independent custom wheel builder in Georgia and not the manufacturer. Every Vesper wheel we build gets spokes cut from the measured ERD of the rim, staged tensioning with a gauge, stress relief and a final true before it ships, and we set the side-load adjustment before the wheel leaves.

In the configurator you will only see parts that fit this drilling; combinations that are not made are struck through, and the price updates as you pick.