Compared with conventional pawl systems, the larger contact area distributes drivetrain loads more evenly, reducing localized stress while improving durability, engagement stability, and pedaling efficiency under demanding riding conditions.
ARC's patented one-piece ratchet design integrates the engagement structure into a single precision-engineered component. The system increases structural rigidity, reduces overall weight, and improves machining accuracy. The simplified construction also enhances long-term reliability while making assembly and maintenance more efficient.
| # |
Type
|
Details
|
|---|---|---|
1 |
Hub Shell Material
|
AL6061-T6 aluminum alloy（100% Forging）
|
2 |
Axle Material
|
AL7075 aluminum alloy（100% Forging）
|
3 |
Freehub Body Material
|
AL7075 aluminum alloy（100% Forging）
|
4 |
End Cap Material
|
AL7075 aluminum alloy（100% Forging）
|
5 |
Disc Brake Interface
|
Special hub for disc brakes and carbon strips on roads
|
6 |
Hole Count
|
F-18H(2:1)/R-18H(2:1)
|
7 |
Hole Diameter
|
Carbon spoke hole diameter: 4.2mm (standard configuration: Hongji Weiye round-head carbon bladed spokes)
|
8 |
Surface Color
|
Precision polishing + sandblasting anodized black finish
|
9 |
Freehub Body Color
|
Anodized Black
|
10 |
Bearing Configuration
|
S&S steel bearings (standard), ENDURO, CeramicSpeed
|
11 |
Hub Structure
|
Ratchet-36T/Ratchet-54T
|
12 |
Freehub Body Standard
|
Shimano HG/Shimano Microspline(MS)-Road/SRAM XDR/Campagnolo Next 3/Campagnolo 11/12S
|
13 |
O.L.D.
|
F-12*100mm /R-12*142mm
|
14 |
Weight
|
328.5±5g
|
Engineered with high-strength aerospace-grade aluminum and an ultra-lightweight carbon-spoke optimized structure to meet the demands of modern road disc brake wheel builds.
✓ High-Strength Aerospace-Grade 7075 Aluminum Alloy Axle & Freehub Body
The axle, freehub body, and end caps are manufactured from aerospace-grade AL7075 aluminum alloy, enhancing structural stiffness and durability while maintaining an exceptionally lightweight construction.
✓ 18H / 21H 2:1 Carbon-Spoke Configuration
The asymmetric 18-hole front and 21-hole rear 2:1 configuration is designed to optimize spoke tension distribution between the drive and non-drive sides, improving wheel stiffness, balance, and structural efficiency.
✓ 4.2mm Carbon-Spoke Optimized Interface
The dedicated 4.2mm spoke holes are designed specifically for carbon spokes, with Hongji Weiye B-type round-head bladed carbon spokes as the standard configuration. The dedicated interface provides a precise and secure connection between the hub and carbon spokes.
✓ Ultra-Lightweight 328.5g Hubset Construction
Through optimized structural design and lightweight aerospace-grade aluminum components, the complete hubset weighs just 328.5g, including 92.4g for the front hub and 236.1g for the rear hub, helping reduce rotational mass for responsive road performance.
✓ Multiple Freehub Standards Available
HG, MSR, XDR, N3W and CP options support a wide range of road drivetrain configurations, providing flexible compatibility for different high-performance road wheelset applications.
✓ Road Disc Brake Compatibility
Designed for 12×100mm front and 12×142mm rear thru-axle standards, providing compatibility with modern road disc brake wheel systems.
No. 112, Dongting North Road, High-tech Zone,Taicang,Jiangsu,215400,China
+86 18262669919
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