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
|
Highway V-brake straight pull carbon spoke hub
|
6 |
Hole Count
|
F-18H (1:1)/ R-21H (2:1, 14H at the base, 7H on the opposite side)
|
7 |
Hole Diameter
|
Carbon spoke aperture (3.2MM carbon flat bar, maximum point at the head 4.0MM, round-headed flat bar)
|
8 |
Surface Color
|
Sandblasted anodized black
|
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|SRAM XDR
|
13 |
Quick Release Included
|
QR001 Road bike quick release
|
14 |
O.L.D.
|
F-100MM、R-130MM
|
15 |
Weight
|
285.8g±5g
|
Engineered with high-strength aerospace-grade aluminum and a lightweight straight-pull carbon-spoke optimized structure to meet the demands of modern road rim 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 a lightweight construction.
✓ 18H / 21H Asymmetric 2:1 Configuration
The 18-hole front and 21-hole rear configuration is optimized for asymmetric 2:1 spoke layouts, helping balance spoke tension between the drive and non-drive sides while improving wheel stiffness and structural efficiency.
✓ Dedicated Carbon-Spoke Interface
The carbon-spoke holes are specifically designed for 3.2mm carbon bladed spokes with a maximum head width of 4.0mm, providing a precise and secure interface for round-head bladed carbon spokes.
✓ Straight-Pull Carbon-Spoke Optimized Structure
The straight-pull design provides a direct spoke interface and clean load path, helping improve spoke alignment and wheel-building efficiency while creating a streamlined hub structure for high-performance road wheelsets.
✓ Lightweight 328g Hubset Construction
A carefully optimized hub structure keeps the complete hubset weight to just 328g, reducing rotational mass while maintaining the structural strength and reliability required for responsive road performance.
✓ Multiple Freehub Standards Available
HG and XDR freehub options support different road drivetrain configurations, providing flexible compatibility for a wide range of modern road wheelset applications.
✓ Road Rim Brake & Quick-Release Compatibility
Designed for 100mm front and 130mm rear spacing, providing compatibility with traditional road rim brake wheel builds.
No. 112, Dongting North Road, High-tech Zone,Taicang,Jiangsu,215400,China
+86 18262669919
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