9Velo Ultralight Road Disc Carbon Spoke EXTREME C52 Wheelset

Price range: $1,799.00 through $1,899.00

  • Ultralight & Responsive: A sub-1000g build designed for featherweight climbing and agile handling (100kg system weight limit).

  • Aero-Modern Dimensions: Features a 52mm depth and 23.6mm internal width for a perfect blend of speed and tire versatility.

  • Advanced Hub Technology: Engineered from aerospace-grade aluminum with a wave-form spring ratchet system for instant power transfer.

  • Race-Ready Durability: Rear ratchets feature a vacuum-plated anti-friction coating to reduce drag and extend drivetrain life.

  • Universal Compatibility: Hooked rims securely support both clincher and tubeless setups.


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Description

The NextGen Ultralight Road Machine

The ultralight road disc carbon spoke Extreme C52 is 9Velo’s most advanced road wheelset to date. Weighing in at an astonishing sub-1000 grams, this wheelset redefines what’s possible in deep-section performance. Featuring a modern rim profile of 52mm rim depth and 23.6mm internal width, it strikes the balance between aerodynamic efficiency and modern tire compatibility.

From the aerospace-grade aluminum hub to the lightweight high-tensile carbon spokes and advanced rim layup, every detail is crafted for featherweight responsiveness, aerodynamic efficiency, and smooth sustained speed.

Aerospace-Grade Aluminum Hub Shell

The hub is crafted from aerospace-grade aluminum and features a newly designed shell that delivers high structural integrity while keeping weight to a minimum. Precision machining ensures tight tolerances and long-term reliability.

Hooked Modern Rim Profile

With a 52mm aerodynamic rim depth, the EXTREME C52 strikes a perfect balance between speed and stability. Whether you’re pushing hard on flat roads or powering through hill climbs, the deep profile helps you maintain momentum.

The 23.6mm wide internal rim width supports modern high-volume tires, offering improved grip, lower rolling resistance, and enhanced comfort. It s fully compatible with both clincher and tubeless setups, offering tire selection flexibility across road conditions and accommodating different riding styles and preferences.

Wave-Form Spring

Inside the hub, a cylindrical wave-form spring apply more even pressure to the ratchet, providing smoother and more consistent power transfer.

T-Shaped Carbon Spoke Interface

The T-head carbon spokes anchor securely into the hub via a T-shaped interface, contributing to the wheelset’s overall stiffness and longevity.

Vacuum-Plated Anti-Friction Ratchets

The ratchets are treated using a vacuum coating process, performed in a controlled vacuum environment to apply a thin anti-friction layer. This advanced surface treatment enhances wear resistance, and ensures smooth hub operation and long-term durability.

Hooked Rim Design

Featuring a wide hooked rim profile, the EXTREME C52 allows for a broader range of tire selections and ensures a secure bead lock. The hooked rims offer a secure tire fit for higher-pressure road use and aggressive cornering, reducing blowout risks and enhancing safety.

Ultralight Total Weight

The ultralight road disc carbon spoke Extreme C52 wheelset weighs in at under 1000 grams (weight of tubeless tape not included), making it one of the lightest deep-section road wheelsets ever produced. This featherweight build translates to fast acceleration and effortless climbing.

Detailed Features
Specifications
Ultralight Carbon Spoke Road Disc Extreme C52 Wheelset (Model Year 2026)
ModelExtreme C52
Focused Riding ScenarioClimb, Lightweight, All-rounder, Aero
Wheel Type700C Ultralight Carbon Spoke Wheelset
Brake TypeDisc Brake
Tire CompatibilityTubeless/Clincher Compatible
Rim TypeHooked
Rim BedHoles Drilled
Rim FinishPaintless Matt
Rim DecalsDark Silver
Rim Outer Width30mm
Rim Inner Width23.6mm
Rim Depth52mm
Tire Size Range700x28c – 700x47c
Spoke Hole Count20H/20H
SpokeCarbon Spoke, 1:1 pattern
NippleAlloy
Hub9Velo X21 Ultra-lightweight Carbon-spoke Hub, Straight Pull (Anti-friction Ratchet, 36 Teeth), Center Lock,
12*100/12*142
FreehubShimano Road HG/Sram XDR/Campagnolo N3W
BearingSteel bearings
System Weight Limit100kg/220lbs
Weight (Front + Rear)*999±30g*


*Weighed with alloy Shimano freehub, tubeless tape weight not included, ±20g
*Specs are subject to change without notice.

IN THE BOX

  • Wheelset
  • Tubeless tape:pre-installed
  • Tubeless valves
  • Spare spokes
  • Spare nipples

Additional information

Model (Rim Depth)

EXTREME C52 (52mm)

Freehub Option

Shimano 11/12 Speed, SRAM XDR

Hub Color

Polished Silver, Space Gray

Hub Ratchet

36t

Bearings Customization

Steel Bearings, Ceramic Bearings

Brand

9VELO

Brand Name: 9VELO Chinese Company Name:厦门九维洛自行车科技有限公司
Founded: 2021 # of Employees: 5-10
Headquarters: Xiamen, Fujian Products Categories: Wheelsets Handlebars

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