Nextie Rollingstar II Fat Bike Front ISO 6 Bolt Disc Hub
This page covers the Nextie Rollingstar II Fat Bike Front ISO 6 Bolt Disc Hub.
Nextie makes the hub; ProWheelBuilder is an independent wheel builder in Georgia, not the manufacturer, and we sell it only as a front and rear pair inside a complete Nextie fat wheel set.
Design and construction
Because the front Rollingstar II fat bike 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
The J-bend flanges take a 32-spoke build, which on a fat wheel is the right number, and the 6-bolt mount takes any rotor. Paired with a Nextie Xiphias or Wild Dragon carbon rim it makes a fat wheel light enough to change how the bike steers.
It is a straightforward, well-made fat hub rather than a boutique one; the value is the whole wheel set, which lands at a price other brands ask for the rims alone.
A front wheel is where you feel a hub least and a build most. With no drive torque to carry, the front Rollingstar II fat bike 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 | Thru Axle 15x150mm Front |
| Drillings | 32h |
| Spoke head | J-bend |
| Weight | 200g |
| Material | Aluminum |
| Finishes | black |
About this listing
What sets this listing apart from the other Rollingstar II fat bike versions: 6-bolt rotor mount, Thru Axle 15x150mm, 32h drilling, about 200g, in black. Pick the one that matches your frame and rotor and the rest of the hub is identical.
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
The Nextie Rollingstar II Fat Bike Front ISO 6 Bolt Disc Hub is sold here only as a front and rear pair inside a complete Nextie fat wheel set. We build most Nextie fat wheels with Sapim Race or DT Competition spokes and brass nipples.
It pairs with the Nextie fat bike rims on this site, Xiphias, Black Eagle, Wild Dragon and Drunken Rhinoceros; choose the rim first and the configurator offers the matching hub pair.
Build it into a wheel
This hub is live in our Custom Wheel Program for fat bike builds. Start a build with the Nextie Rollingstar II Fat Bike Front ISO 6 Bolt Disc Hub and the configurator opens with this exact hub pinned at the top of the Nextie list — you choose the rest of the parts and it validates every combination as you go.
Testing, standards and warranty at Nextie
Nextie publishes engineering drawings rather than lab figures for the Rollingstar hubs: full profile drawings with flange diameters, center-to-flange distances, spoke hole diameters and spoke hole offsets for every axle standard, and exploded-view drawings that name every part down to the bearing codes (6802 and 15267 cartridge bearings, AL7075 weldless-tube axles, AL6061 forged shells and end caps). The dimensions on this page are taken from those drawings.
Nextie states that its factory in Xiamen runs a quality-control framework from raw-material inspection through in-process control to finished-product testing, holds SGS test certification and industry production-system certifications, and has held UCI wheel approval since September 2021 for wheels built on its rims. The Rollingstar II uses stainless-steel cartridge bearings and the Rollingstar III ceramic-hybrid bearings; both are sold with Nextie's hub warranty and a full spare-parts list.
Certifications
- UCI wheel approval — Held by Nextie since September 2021 for wheels built on its road and gravel rims (NXT45RC 2021, Alpha 50 October 2025, Alpha 40 May 2026, Alpha 45G and 55G July 2026); no hub-specific certification exists (source)
- SGS test certification and production-system certifications — Stated by Nextie for its factory (source)
Sources on Nextie's site:
- Nextie Rollingstar II road hub drawing (PDF)
- Nextie Rollingstar II mountain hub drawing (PDF)
- Nextie Rollingstar III exploded view (PDF)
- Nextie documents page
Nextie publishes those results; ProWheelBuilder builds the hub into a wheel and does not test it in a lab.
Building it at ProWheelBuilder
Nextie makes the Rollingstar II fat bike; 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
Manufacturer's warranty. Nextie warrants this product against defects in materials and workmanship. The duration, conditions and claim process are set by Nextie and can change without notice, so ask us and we will confirm the current terms before you buy.
ProWheelBuilder. Any wheel we build on this part carries ProWheelBuilder's one-year warranty in addition to the manufacturer's. Broken spokes are replaced for a year whatever the cause, and all wheel-side labor is included - truing, re-tensioning, rebuilding. Where the maker covers a failed rim or hub we handle that claim for you; where they decline, an eligible replacement comes at 25% off current retail. The customer covers shipping in both directions. Components supplied by the customer are not covered.
Full terms are on our Policies & Warranty page.
Rollingstar II Fat Bike Front 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.
Can I buy the Rollingstar II fat hub on its own?
No. Nextie hubs are sold here only as a front and rear pair inside a complete Nextie wheel set we build.
What spacing is the Rollingstar II fat hub?
15 x 150mm thru-axle front and 12 x 197mm thru-axle rear, the current fat-bike standards.
Is it straight-pull like the other Rollingstar II?
No. The fat version is J-bend, drilled for 32 spokes, which opens up every spoke we stock.
Is it good for winter?
Yes. Stainless cartridge bearings and sealed end caps handle slush and salt; a clean and regrease each spring keeps it happy.
Which axle spacing does it fit?
Thru Axle 15x150mm 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.
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.
