ProX 32er MTB Carbon Wheels Big Diameter 32inch Mountain Bike Wheels With Ratchet System Hub

• 32-inch light weight carbon MTB wheels

• Built with ProX 89MB MTB Boost hubs, light weight

• With Ratchet 54T freehub system, quick engagement

• Shimano 11s, Microspline 12s, and SRAM XD 11/12s freehub

• Sapim Leader spokes, strong and stiff

  • Item NO.:

    32er 89MB wheels
  • Payment:

    Paypal, Bank Transfer
  • Origin:

    China
  • Color:

    UD/3K/12K(Customized Decal Acceptable)
DESCRIPTION

ProX 32-inch Carbon Mountain Bike Wheels - Light Weight 32er MTB Carbon Wheels For XC 

As large‑diameter 32‑inch MTB platforms gain popularity for better obstacle‑rolling performance and trail momentum, ProX brings this 32er carbon wheelset built around 89MB Boost hub as a high‑performance alternative.
Featuring a precision-engineered 54T ratchet freehub system, the ProX hub delivers instant power transfer, minimal rolling resistance, faster acceleration, and reduced fatigue. Built by a reputable Taiwanese hub manufacturer, it offers premium-level reliability comparable to high-end brands like DT Swiss. Manufactured by a well‑established Taiwanese hub maker, it features precision‑engineered 54T ratchet system, delivering instant power engagement, low rolling resistance, snappy acceleration and improved long‑term durability, matching reliability benchmarks of premium high‑end hubs.
The 89MB hub supports custom logo customization (etching or sticker), ideal for OEM/ODM private branding.

PROX 32-inch mountain bike carbon wheels

AD32-36SL carbon wheelset is made from premium T700+T800 to achieve super lightweight, which is more suitable for lighter weight XC/TR riders (max weight limit 100kg/220lb). 

AD32-36 carbon wheelset is made from T700 carbon fiber which is the basis to make high strength mtb carbon rims. The max rider weight limit is 120kg/265lb.

Asymmetric rim design balances spoke tension evenly between the drive and non‑drive sides. This allows higher and more consistent tension on the non‑drive side compared to conventional symmetric wheels, delivering improved overall stiffness. Additionally, keeping tension levels nearly equal on both sides prevents spokes from loosening easily over long-term use, enhancing wheel stability and reducing routine maintenance frequency.

PROX 89MB hubs for MTB


6-bolt or Centerlock?

6 bolt or centerlock refer to the attachment between the rotor and hub. As long as the hub is attached to the rotor and centered correctly, both of disc brakes systems will grab your bike and slow you down.
6 Bolt: Standard, universal fit, compatible with most MTB rotors & frames. Easy to replace, widely available. Best for versatility, easy maintenance and trail/AM/Enduro riding.
Centerlock: Sleeker, lighter, faster to install/remove. More rigid, cleaner design. Common on high-end & road/XC bikes. Best for lightweight, clean setup, XC/race use.
ProX 89MB MTB boost hubs are available on both 6 bolt and centerlock options. 


32-inch Tire:

32-inch carbon rim + Maxxis Aspen 32x2.4'' tire package available for combined purchase.

Maxxis Aspen 32x2.4''

  • 120 TPI + EXO protection – lightweight, supple, and durable for XC racing
  • 2.40” Wide Trail (WT) – optimized for 30mm inner width rims
  • Tubeless Ready (TR) for lower pressures, improved grip, and fewer flats

MAXXIS 32inch tire (tubeless ready)

SPECIFICATION

ProX 89MB MTB Boost 32er MTB Carbon Wheels Specification:

-Hub: ProX 89MB MTB Boost (front 15*110mm TA/rear 12*148mm TA), Ratchet 54T freehub system

-Disc brake type: 6-bolt, center lock

-Cassette Body: Shimano 11s HG, 12s MicroSpline, Sram XD 11/12s optional 

-Type: straight pull

-Spoke Hole Count: front 28H/rear 28H

-Tire Type:Clincher/Tubeless Ready

-Spoke: Sapim Leader spokes, 14G, 2.0mm, round straight‑gauge

-Spoke Tension(recommended): ≤145kgf

  135kgf on drive side of wheel for both front wheel and rear wheel

-Tire Pressure: 40psi max


-Maintenance Frequency On Hubs:
Standard Use: every 1,000–1,500 km or 3–6 months (whichever comes first).
Harsh Conditions (wet, muddy, dusty): every 500 km or monthly.
Post-Ride Check: clean externally after muddy/rainy rides to prevent grime buildup.

-Warranty Year: 2 years

-Tubeless Valve (recommended, not included): 44mm length

Tubeless Valve

ProX Asymmetric Design 32 inch Mountain Bike Carbon Wheels For XC/Trail

Model (32ER)  Rims Terrain  Outer Width Rim Offset Hub Front Size Rear Size Spoke
Tire Size
(Recommended)
Weight
(+/-3%)
89MB-AD32-36SL-Leader
AD32-36SL XC / TR 36mm 2.8mm ProX 89MB 15*110mm 12*148mm Sapim Leader 32*2.3''-2.8'' 1734g
89MB-AD32-36-Leader AD32-36
XC / TR 36mm 2.8mm ProX 89MB 15*110mm 12*148mm Sapim Leader 32*2.3''-2.8'' 1814g

Rims AD32-36SL
AD32-36
Max Weight Limit 100kg/220lb 120kg/265lb
Material T700+T800 T700
Sectional Drawing AD32-36SL 32er MTB carbon rims
AD32-36 32er MTB carbon rims


TECHNOLOGY
Carbon Fiber Material

Carbon Fiber Material

Premium T700 + T800 carbon fiber are used in our carbon rims. 

Besides, advanced graphene filling technology is used in producing our light weight 32er MTB carbon rims. 

Combining with stable resin system to make consistent quality and light weight carbon mtb rims.

Light Weight

Light Weight

By using well designed lay-up structure, mixing T700 and T800 carbon prepreg, light weight carbon rims are created.

Excessive materials are eliminated to save weight, while extra materials are added around spoke hole for reinforcement.

So, light weight is achieved without compromise in strength or stiffness.

Asymmetric Design

Asymmetric Design

Asymmetric design mtb rims help to make wheelset with more even spoke tension between drive side and non-drive side.

MTB carbon wheelset built with asymmetric rims are of better stiffness and stability.

The spoke tension on such wheelset will not get loose easily, lower frequency for re-truing is needed.

Hookless Design

Hookless Design

Compared to bead hook rims, the sidewalls of hookless rims are thicker and stronger, providing better impact resistance.

Straight bead provides more stance for tire. Tires will not be squeezed in bead as it was, which makes it less "light bulb effect".

Thus, the tire/rim engagement is more stable, more difficult to be blown out under strong impact, which is important for carbon mountain bike rims.

Tubeless Ready

Tubeless Ready

Tubeless tire is getting popular in road bike wheels thanks to its better traction, lower rolling resistance and better riding comfort.

All our carbon clincher rims are tubeless ready (also fit normal tube tires).

Optimized anti-burp bump design provides easy tire mounting, dismounting, as well as air inflation. 

Hand Built

Hand Built

All our carbon wheelsets are hand built by experienced mechanician.

Based on customers’ demand, various choice of hubs, spokes and nipples are optional.

After wheel built, they are trued precisely at high standard (≤0.3mm) on roundness, lateral and center tolerance.


ProX 89MB Hubs

ProX 89MB hubs are used.

89MB mtb boost hubs are with stable quality and competitive price.

15*110/12*148 boost spacing, with both 12-speed (Sram XD, Shimano MicroSpline) and 11-speed freehub optional.

Pillar Spokes

Sapim Spokes

The Sapim Leader 14G, 2.0 mm round straight‑gauge stainless steel spokes. 

Non‑bladed design offers solid strength, great fatigue resistance and easy‑to‑service performance for MTB applications. 

It makes them well‑suited for demanding 32‑inch large‑diameter mountain wheels.

2-Year Warranty

2-Year Warranty

We have strict production management system, QC and Testing process. Our quality is always very good and reliable.

For all carbon rims and carbon wheels sold by ProX, 2 years’ quality warranty is offered (starting from the date of package being signed).

Click Warranty Policy to see more details in another page.

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