NEXTIE ROLLINGSTAR II REAR CENTERLOCK DISC HUB

Design and construction

The freehub is a star ratchet, the same principle the DT Swiss hubs use: two toothed rings pressed together by springs, so every tooth carries the load at once instead of two or three pawls doing all the work. Thirty-six teeth give ten degrees of engagement, quick enough for technical trail and gravel; the 45 and 54-tooth rings drop in for riders who want less than seven. The ratchet pulls apart by hand for cleaning, and the freehub body swaps between Shimano HG, SRAM XD and XDR and Micro Spline without tools.

The shell is machined aluminum on a hollow alloy axle with stainless steel cartridge bearings, sealed at both ends, and straight-pull flanges. Straight-pull spokes leave the flange in a line with no elbow, which lets Nextie cut the flanges light and lets us build a wheel with more even tension; it also means the lacing pattern is fixed by the flange geometry rather than chosen, which is one less thing to get wrong. End caps convert the same hub between 15 x 110 Boost or 12 x 100 front and 12 x 148 Boost or 12 x 142 rear, and the rotor mounts by centerlock.

How it rides

A Rollingstar II feels like a much more expensive hub. Engagement is firm and quiet, coasting is smooth, and the stainless bearings shrug off wet rides that pit cheaper steel. On a trail bike it is quick enough that you never think about a dead stroke; on a gravel or road bike it simply rolls. The straight-pull build gives the wheel a tidy, even feel under load that a J-bend wheel on a budget hub rarely matches.

It is not a boutique hub and it does not pretend to be: the finish is good rather than jewel-like and there is no lifetime warranty. What it is, is the best-value ratchet hub we build, and inside a Nextie wheel set it makes a complete carbon wheel for the price other brands ask for a rim.

Specifications

This version

This version is the centerlock hub in Thru Axle 12x148mm Boost, Thru Axle 12x142mm, drilled for 24h, 28h, about 165g, in black, silver, red, gold. Those are the only things that differ between the versions of the Rollingstar II; the shell, bearings and seals are the same.

Centerlock is the lighter, quicker rotor mount: a splined rotor drops onto the hub and a single lockring holds it, so a rotor swap takes a minute with a lockring tool and there are no six small bolts to torque or lose. Shimano and most current road and gravel rotors are centerlock; 6-bolt rotors fit with an adapter.

Sizes, fit and compatibility

The Nextie Rollingstar II Rear Centerlock Disc Hub is sold here only as a front and rear pair inside a complete Nextie wheel set. It comes in 24 and 28 hole with the axle options in the configurator: 15 x 110 Boost or 12 x 100 front, 12 x 148 Boost or 12 x 142 rear, centerlock rotor. Straight-pull spokes only; the configurator switches the spoke list to straight-pull the moment you pick it, and we build most Rollingstar II wheels with Sapim CX-Ray, Laser or Race straight-pull spokes and brass nipples.

It pairs naturally with every Nextie rim on the site, MTB, gravel and road, in any tier; choose the rim first and the configurator offers the matching hub pair and colors.

Build a wheel around it

Offered for gravel and road disc, touring, mountain bike and MTB single-speed builds in our Custom Wheel Program. Start with the Nextie Rollingstar II Rear Centerlock Disc Hub and the configurator pins it for you, then checks each choice you make against it.

Building it at ProWheelBuilder

Nextie designs and makes the Rollingstar II in Xiamen; ProWheelBuilder is an independent custom wheel builder in Georgia and not the manufacturer. Every Nextie wheel set we build gets spokes cut from the hub's measured flange dimensions and the rim's measured ERD, staged tensioning with a gauge, stress relief and a final true before it ships, and the pair leaves together with the caps and freehub body you chose.

The configurator shows only Nextie rims and straight-pull spokes that fit the hub's drilling, strikes through combinations that are not made, and prices the whole wheel set live.