9Velo Ultralight Road Disc Carbon Spoke EXTREME C52 Wheelset
Price range: $1,799.00 through $1,899.00
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Ultralight & Responsive: A sub-1000g build designed for featherweight climbing and agile handling (100kg system weight limit).
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Aero-Modern Dimensions: Features a 52mm depth and 23.6mm internal width for a perfect blend of speed and tire versatility.
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Advanced Hub Technology: Engineered from aerospace-grade aluminum with a wave-form spring ratchet system for instant power transfer.
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Race-Ready Durability: Rear ratchets feature a vacuum-plated anti-friction coating to reduce drag and extend drivetrain life.
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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.
- The 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.
- 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.
- The rim uses a newly developed advanced carbon layup that maximizes stiffness without adding unnecessary weight, ensuring race-ready durability and confidence on rough terrain.
- 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.
- 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.
- The ratchet system hubs offer a fast engagement and efficient wheel for a smooth riding experience, which is beneficial for rapid acceleration in the race and riding engaging various speeds and technical cornering.
- Inside the hub, a wave-form spring provides smoother and more consistent power transfer.
- The hard-anodized hub axle achieves a tolerance within 0.003mm, boosting stiffness and precision.
- The new ratchets are treated with a vacuum-plated anti-friction coating, which minimizes drag and enhances long-term durability. This high-tech finish ensures the hub runs smoother for longer, even under heavy load.
- Lightweight freehub body equipped.
- Designed with user-friendly maintenance in mind, the hubs require no specialized tools for servicing. This makes upkeep straightforward, allowing you to keep your wheelset in top condition with minimal effort. The easy-to-service design also ensures that you can perform routine maintenance and repairs quickly, minimizing downtime and keeping you on the road.
- Tool-free freehub body exchange supports multiple groupset systems for added convenience.
- Bladed lightweight carbon spokes feature an aero-flat profile. Despite their ultralight construction, carbon fiber’s high tensile strength ensures that the spokes can withstand significant stress and impact without compromising performance.
- With stiffer and lighter carbon spokes, Extreme C52 wheelsets can reduce the spoke hole count, offering outstanding stiffness while making no compromise on the weight.
- The T-head carbon spokes anchor securely into the hub via a T-shaped interface, contributing to the wheelset’s overall stiffness and longevity.
| Ultralight Carbon Spoke Road Disc Extreme C52 Wheelset (Model Year 2026) | |
|---|---|
| Model | Extreme C52 |
| Focused Riding Scenario | Climb, Lightweight, All-rounder, Aero |
| Wheel Type | 700C Ultralight Carbon Spoke Wheelset |
| Brake Type | Disc Brake |
| Tire Compatibility | Tubeless/Clincher Compatible |
| Rim Type | Hooked |
| Rim Bed | Holes Drilled |
| Rim Finish | Paintless Matt |
| Rim Decals | Dark Silver |
| Rim Outer Width | 30mm |
| Rim Inner Width | 23.6mm |
| Rim Depth | 52mm |
| Tire Size Range | 700x28c – 700x47c |
| Spoke Hole Count | 20H/20H |
| Spoke | Carbon Spoke, 1:1 pattern |
| Nipple | Alloy |
| Hub | 9Velo X21 Ultra-lightweight Carbon-spoke Hub, Straight Pull (Anti-friction Ratchet, 36 Teeth), Center Lock, 12*100/12*142 |
| Freehub | Shimano Road HG/Sram XDR/Campagnolo N3W |
| Bearing | Steel bearings |
| System Weight Limit | 100kg/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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