Nextie MTB carbon rim
The Nextie MTB is a full carbon fiber rim for mountain biking - from cross-country and trail to enduro and downhill, with the profile for each ride picked by size. Premium is Nextie's all-round layup: a little more material than Supreme for a rim that shrugs off rock strikes and seasons of use. Nextie designs and molds the rim; ProWheelBuilder is an independent wheel builder in Georgia, not the manufacturer. We build the rim into a complete wheel: pick the hub, spokes, nipples and lacing in the configurator and it ships laced, tensioned and trued.
Sizes, weights and prices
8 sizes in 27.5in / 29in. Rim weights are Nextie's published figures per size; ERD is the effective rim diameter we cut spokes to.
| Size | Wheel | Outer width | Inner width | Depth | ERD | Weight | Tire range | Rim price |
|---|---|---|---|---|---|---|---|---|
| 27MM WIDE UM XC (22MM INNER) | 29in | 27mm | 22mm | 22mm | 596 | 280g | 1.8in-2.2in | $245 |
| 30MM WIDE UM XC (25MM INNER) | 29in | 30mm | 25mm | 22mm | 590 | 310g | 1.9in-2.35in | $255 |
| 32MM WIDE UM XC (27MM INNER) | 29in | 32mm | 27mm | 22mm | 590 | 320g | 2.0in-2.45in | $265 |
| 35MM WIDE UM XC (30MM INNER) | 29in | 35mm | 30mm | 22mm | 587 | 325g | 2.0in-2.75in | $275 |
| 33MM WIDE XM TRAIL (27MM INNER) | 29in | 35mm | 27mm | 22mm | 581 | 330g | 2.0in-2.45in | $265 |
| 46MM WIDE XM TRAIL (40MM INNER) | 29in | 46mm | 40mm | 22mm | 470 | 470g | 2.4in-3.3in | $305 |
| 30MM WIDE VM (25MM INNER) | 29in | 30mm | 25mm | 22mm | 596 | 255g | 1.9”-2.5in | $285 |
| 35MM WIDE VM (30MM INNER) | 29in | 35mm | 30mm | 22mm | 590 | 280g | 2.0”-2.75in | $295 |
| 37MM WIDE VM (29MM INNER) | 29in | 37mm | 29mm | 22mm | 590 | 285g | 1.9”-2.65in | $295 |
| 35MM WIDE XML ENDURO (29MM INNER) | 29in | 35mm | 29mm | 22mm | 589 | 360g | 2.0”-2.75in | $275 |
| 38MM WIDE XML ENDURO (32MM INNER) | 29in | 28mm | 32mm | 22mm | 589 | 415g | 2.15”-2.9in | $285 |
| 39MM WIDE XD DH (30MM INNER) | 29in | 38.6mm | 30mm | 22mm | 550 | 550g | 2.1”-2.75in | $315 |
| 33MM WIDE XM TRAIL (27MM INNER) | 27.5in | 32.6mm | 27mm | 22mm | 549 | 310g | 1.9”-2.45in | $265 |
| 36MM WIDE XM TRAIL (30MM INNER) | 27.5in | 36mm | 30mm | 22mm | 543 | 400g | 2.0”-2.75in | $275 |
| 41MM WIDE XM TRAIL (35MM INNER) | 27.5in | 41mm | 35mm | 22mm | 543 | 430g | 2.2”-3.2in | $295 |
| 46MM WIDE XM TRAIL (40MM INNER) | 27.5in | 46mm | 40mm | 22mm | 445 | 445g | 2.4”-3.3in | $305 |
| 35MM WIDE XML ENDURO (29MM INNER) | 27.5in | 35mm | 29mm | 22mm | 551 | 340g | 2.0”-2.5in | $275 |
| 38MM WIDE XML ENDURO (32MM INNER) | 27.5in | 38mm | 32mm | 22mm | 551 | 395g | 2.15”-2.9in | $285 |
| 39MM WIDE XD DH (30MM INNER) | 27.5in | 38.6mm | 30mm | 22mm | 520 | 520g | 2.1”-1.75in | $315 |
What the designations mean
Every size in the list carries Nextie's own series code so you can tell the profiles apart. Here is what they mean.
| Supreme | Nextie's lightest layup - the least material that still meets the rim's strength target. Choose it when grams matter most. |
|---|---|
| Premium | The all-round layup: a little more carbon than Supreme, for a rim that shrugs off rock strikes and seasons of hard use. |
| Standard | The value layup - the same molded construction at the lowest price in the range. |
| UM / XM / XML / XD | Premium MTB codes: UM = XC (light), XM = Trail, XML = Enduro light, XD = Downhill. VM = the Premium Alpha / Omega XC rims. |
| AM / DH | Standard MTB (26in): AM = Trail / Enduro, DH = Downhill. |
Material and construction
Every size is molded from carbon fiber in Nextie's Xiamen factory, in a UD (unidirectional) weave with a matte finish. Premium is Nextie's all-round layup: a little more material than Supreme for a rim that shrugs off rock strikes and seasons of use. The rim bed is tubeless-ready, and a Nextie MTB rim is stiffer laterally than an aluminum rim of the same weight, which is what makes a light carbon wheel feel precise under power. Nextie rates these sizes for a maximum system weight of 120 kg; 120 kg (XC) / 119 kg (AM) / 175 kg (Gravel); 120 kg (XC) / 175 kg (Gravel); 120 kg XC / 175 kg (Gravel); 126 kg; 132 kg (AM) / 134 kg (Enduro); 136 kg; 136 kg (AM) / 134 kg (Enduro); 137 kg; 137 kg (XC) / 175 kg (Gravel); 138 kg (DH) / 157 kg (Enduro); 145 kg (All Mountain) / 134 kg (Enduro) (rider plus bike and gear).
Weight
Weights run from 255g for the 30MM WIDE VM (25MM INNER) to 550g for the 39MM WIDE XD DH (30MM INNER). Rim weight is rotating weight at the outside of the wheel, so every gram saved here is felt more than a gram saved on the frame. Inner widths of 22mm, 25mm, 27mm, 29mm, 30mm, 32mm, 35mm, 40mm decide the tire: wider beds let a big tire hold its shape at low pressure.
Value
Nextie molds its own rims and sells factory-direct, with no distributor or brand-marketing margin built into the price. The material and the construction are the same full carbon fiber, UD layup and tubeless-ready bed found on rims that cost two to three times as much from the big-name brands - the Nextie MTB simply skips the layers of mark-up between the mold and your wheel.
Because we sell the Nextie MTB only inside a wheel we build, that saving carries through the whole wheel: we lace it to the hub you choose, cut spokes to the measured ERD of the exact size, tension and true it by hand, and stand behind the build. You end up with a hand-built carbon wheel at a price most brands ask for the rim alone, and the current per-size price is always shown live in the configurator.
How we build it
Choose the size and wheel diameter, then a drilling (24h, 28h, 32h, 36h), and the configurator only offers hubs, spokes and lacing patterns that can actually be built with that combination. Sizes that are not made in a given drilling or diameter are struck through rather than hidden, so you can see the whole range. Use the Custom Wheel Program to start from this rim, or send us a rim you already own with the supply-your-own option.
Put it in a custom wheel
Build a custom wheel around the Nextie MTB Carbon Rim — the link drops you into our Custom Wheel Program with this rim pinned, ready for you to choose the rest. It is set up for mountain bike and MTB single-speed builds.
Spoke head is decided by the hub, not the rim: this rim builds equally well with J-bend or straight-pull spokes, and the configurator only offers the spokes that match the hub you pick.
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. 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.
Nextie MTB questions
Is ProWheelBuilder the manufacturer of the Nextie MTB?
No. Nextie designs and manufactures the rim. ProWheelBuilder is an independent custom wheel builder in Georgia: we buy the rim from Nextie and build it into a finished wheel to your spec.
Can I buy the Nextie MTB on its own?
No. We supply Nextie rims only as part of a wheel we build, so every rim is laced, tensioned and trued here before it ships.
Which spoke count should I choose?
It depends on your weight, terrain and the hub, not on the rim alone. The configurator recommends a count from your bike type and rider weight, within the 24h, 28h, 32h, 36h this rim is drilled for.
Is the Nextie MTB tubeless-ready?
Yes. Nextie builds the rim bed tubeless-ready; we tape and fit a valve when you choose the tubeless option in the build.
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 which size? 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.
