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-21H(1:1)/R-21H(1:1)
|
7 |
Hole Diameter
|
Special holes for round-head carbon spokes (suitable for Hongji Weiye B-type and C-type carbon spokes)
|
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,Shimano Microspline(MS)-Road,SRAM XDR,Campagnolo Next 3,Campagnolo 11/12S
|
13 |
O.L.D.
|
F-12*100MM/ R-12*142MM
|
14 |
Weight
|
390.9±5g
|
Engineered with high-strength aerospace-grade aluminum and a dedicated carbon-spoke interface to meet the demands of modern road disc brake wheel builds.
✓ High-Strength Aerospace-Grade 7075 Aluminum Alloy Axle & Freehub Body
Enhance structural stiffness and durability while maintaining a refined weight balance for reliable road performance.
✓ Integrated Ratchet Structure
ARC patented one-piece ratchet design improves structural strength, enhances load distribution, and delivers more reliable engagement performance under high-torque riding conditions.
✓ 2:1 Carbon-Spoke Optimized Configuration
The 21-hole front and rear configuration with a 2:1 spoke arrangement is engineered to optimize spoke tension balance and load distribution, helping achieve a stiff and responsive carbon wheel system.
✓ Dedicated Round-Head Carbon-Spoke Interface
Precision-machined spoke holes are specifically designed for round-head carbon spokes, compatible with VONOA B-type and C-type carbon spokes for secure spoke integration and reliable wheel-building performance.
✓ Multiple Freehub Standards Available
HG, Microspline, XDR, N3W and CP options support a wide range of road drivetrain configurations.
✓ 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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