Velocity Race Front Black ISO 6 Bolt Disc Hub
The Velocity Race hub is the lighter of the two hub lines the company assembles in Florida, and it is the hub we reach for when a customer wants a wheel that matches from rim to hub. This page covers the Velocity Race Front Black ISO 6 Bolt Disc Hub, the mountain-bike disc version in Boost or standard spacing with a centerlock or 6-bolt rotor mount.
These are not the lightest or the fanciest disc hubs we sell, but they are well made, easy to service, priced sensibly and available in a matching color, and for a lot of trail and gravel riders that is the whole brief.
The Velocity Race hub comes from us only as a finished wheel: pick the rim, spokes and nipples, and we lace, tension and true it by hand in Georgia before it ships.
Design and construction
The Race hubshell is machined from aluminum bar with conventional J-bend flanges and anodized in the color range. Bearings are sealed cartridge units in common sizes, replaceable with a bearing press when they eventually wear.
The Race is lighter than the Standard hub because the shell is machined thinner and the axle is a lighter alloy; the flange spacing is the same, so the two build into wheels of similar stiffness.
The hubs are assembled at the same Jacksonville, Florida facility as the rims, which is why hub and rim colors match exactly and why the two are designed to be built together.
A front hub is a bearing carrier with flanges, and that is the whole job of the front Velocity Race hub: two sealed bearings on a stiff axle, end caps for your fork's standard, and flanges spaced to give the spokes a good bracing angle on the rotor side. There is nothing to engage and nothing to swap. Everything written about freehubs and engagement applies to the rear hub only; what you get up front is the same shell quality and the same seals without any of the moving parts.
How it rides
The main reason to choose the Race hub over a DT Swiss 350 or Bitex is the color match with the rims, and a wheel built that way looks like it was made as a set because it was.
A front wheel is where you feel a hub least and a build most. With no drive torque to carry, the front Velocity Race hub 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
| Position | Front |
|---|---|
| Axle options | QR 5x100mm Front, Thru Axle 12x100mm Front, Thru Axle 15x100mm Front |
| Drillings | 24h, 28h, 32h, 36h |
| Spoke head | J-bend |
| Brake | 6-bolt disc |
| Left flange diameter | 58 mm |
| Right flange diameter | 45 mm |
| Left center-to-flange | 22 mm |
| Right center-to-flange | 36 mm |
| Spoke hole diameter | 2.6 mm |
| Weight | 145g |
| Material | Aluminum |
| Finishes | black |
About this listing
What sets this listing apart from the other Velocity Race hub versions: 6-bolt rotor mount, QR 5x100mm, Thru Axle 12x100mm, Thru Axle 15x100mm, 24h, 28h, 32h, 36h drilling, about 145g, in black. Pick the one that matches your frame and rotor and the rest of the hub is identical.
This is the 6-bolt Velocity Race hub: the rotor bolts to a flange with six T25 bolts, which is the mount most mountain and gravel rotors still use and the easiest to find a rotor for on the road. If you run centerlock rotors, choose the centerlock version of the same hub instead.
Sizes, fit and compatibility
It takes J-bend spokes in any gauge; we build most Race hub wheels with DT Competition or Sapim D-Light spokes and brass nipples.
It pairs naturally with the Velocity Blunt 35, Blunt SS, Dually and Cliffhanger, and with any other rim in the catalog that matches its drilling. Pick your bike type and weight in the configurator and it recommends a spoke count and lacing pattern.
Build a wheel around it
Offered for gravel and road disc, mountain bike, MTB single-speed, fat bike, tandem and e-bike and touring builds in our Custom Wheel Program. Start with the Velocity Race Front Black ISO 6 Bolt Disc Hub and the configurator pins it for you, then checks each choice you make against it.
Testing, standards and warranty at Velocity
Velocity USA offers hubs under its own name for road, gravel, mountain, touring, tandem and track use.
What Velocity does state: most hubs use cartridge bearings "with weather-resistant seals", and Race hubs add "double-bearing seals for added protection." Bearing preloads are set at the factory with no need for adjustment. Velocity cautions that "Sealed does not mean waterproof" - bearings that are submerged, pressure-washed or otherwise waterlogged should be serviced or replaced by a professional mechanic, and service depends on hub type. Velocity sells replacement sealed cartridge bearings in 6001, 6802 and 6902 sizes, offers loose-ball bearings as an option on custom wheels, and ships mountain disc hubs with parts to convert between 9 mm quick-release, 12 mm and 15 mm thru-axle.
Sources on Velocity's site:
- Tech - Velocity USA (Hub Technology section)
- Standard Hub - Rear - Velocity USA
- Road Race Hub - Rear - Velocity USA
- Sealed Cartridge Bearings - Velocity USA
- Hubs collection - Velocity USA
Everything in this section is published by Velocity. ProWheelBuilder is the wheel builder, not the tester, and the hub reaches us as the maker ships it.
Building it at ProWheelBuilder
The Race hub is assembled in Florida; ProWheelBuilder is an independent custom wheel builder in Georgia and not the manufacturer. We measure the rim before we cut a spoke, bring the wheel up in three or four rounds with a gauge, stress-relieve it between rounds and true it last, then tape it and fit a valve if you want it tubeless.
Only compatible hubs and spokes appear in the configurator, impossible combinations are struck through rather than hidden, and the price is live.
Warranty
Velocity's warranty. Velocity warrants its rims against defects in material and workmanship for the life of the product, repairing or replacing at its option. Normal wear, accidents, misuse, improper assembly and poor maintenance are excluded.
ProWheelBuilder. If we lace this into a wheel for you, that wheel also carries ProWheelBuilder's own one-year warranty, which covers broken spokes regardless of cause and all wheel-related labor, including truing and rebuilding, for a year from purchase. Where a rim or hub is covered by its maker, we make the manufacturer's claim for you and coordinate it; where it is not, we offer an eligible replacement rim or hub at 25% off current retail. Shipping to and from us is the customer's. This cover does not extend to wheels built from components you supply yourself.
Full terms are on our Policies & Warranty page.
Race Front Black ISO 6 Bolt Disc Hub questions
Will my rotors fit this hub?
This is the 6-bolt version: any ISO 6-bolt rotor bolts straight on with six T25 bolts, which is still the most common and the easiest rotor to replace anywhere. Centerlock rotors do not fit it - for those, take the centerlock version of the same hub, listed separately.
What is the difference between the Race and Standard hubs?
The Race is lighter, with a thinner machined shell and lighter axle, and comes in colors; the Standard is the heavier, cheaper workhorse. Internals and flange spacing are similar.
Can I get the Race hub in a color to match my rim?
Yes. The factory anodises the Race hub in the same colors as its rims; the colors in stock are listed in the configurator.
Which axle spacing does it fit?
QR 5x100mm Front or Thru Axle 12x100mm Front or Thru Axle 15x100mm Front. Measure between the inside faces of your dropouts if you are unsure, or text us.
Does it need special spokes?
No. It takes standard J-bend spokes, which the configurator offers in every gauge and finish we stock.
How long will the wheel take?
Build time comes down to parts availability rather than bench time. The estimated ship date is shown in the configurator before you check out.
Not sure? Text or leave a voicemail on 470-253-0929 or email info@prowheelbuilder.com — you will be talking to the people who build the wheels.
