Road Bike Hub Rachet System R2 Ultralight Road Bicycle Hub Cycle Disc V-brake HG MS XDR

What Makes the R2 Hub Stand Out?

Lighter starts, longer coasts — High-quality bearings + low-resistance lubrication deliver exceptional smoothness, making the wheels feel more alive and responsive.

Instant power transfer — 45T/72T high-engagement ratchet with just 5°–8° of pickup. The moment you step down, it responds — ideal for climbing and sprints.

Stiff & efficient — Large flange + 2:1 drive-side lacing offers a solid, direct feel when sprinting or rocking the bike, with no power loss.

Built to last — TC4 titanium freehub resists biting and wear, features simple tool-free maintenance, and comes with a lifetime warranty (excluding bearings).

True lightweight — Weighing only 285g, it achieves real weight savings without sacrificing stiffness or durability.

Plus, multiple color options are available, including custom finishes.

In short：The R2 is a high-performance hub that strikes the ideal balance among smoothness, response, stiffness, durability, and weight.

The R2 disc - brake series wheelsets are equipped with a number of technologies that we are extremely proud of and are our main products.

Positioned at a mid-range price point, it offers the materials and design of high-end hubs, along with the performance experience of top-tier, cutting-edge products. The hub core engagement system features our self-developed SSF ratchet high-density patented ratchet structure (SSF stands for more efficient, smoother, and easier to maintain), providing superior advantages in pedaling efficiency, lateral stiffness, rolling resistance, maintenance, lifespan, and lightweight design compared to competitors. With larger-sized axles and bearings, race geometry, and a 2:1 large flange drive, the wheelset delivers higher efficiency and exceptional rigidity. The hub shell is constructed from imported 7075 aluminum alloy , TCA titanium alloy freehub, SFP bearing preload adjustment, and SL+ high-strength, high-performance carbon fiber rims. The wheelset ensures rapid pedaling feedback, crisp climbing performance, and outstanding aerodynamics and smoothness.

Precision weaving ensures the wheelset's power endures longer.

Features:

1. Weight reduced to 285g, on par with DT180 and lighter than Carbon Ti hubs.  

2. Flange size upgraded from 64mm to 74mm, with a unique flange design featuring chamfered edges for smooth transitions and a comfortable feel. This combination of flange size and weight is currently exclusive to the R2.  

3. The main bearing position is shifted outward by 2mm, enhancing lateral stiffness. The R2's main bearing position is also the most outward among lightweight hubs.  

4. Flexible bearing options, including EZO contact-sealed bearings and CEMA ceramic bearings, catering to different working conditions and needs.  

5. A wide range of color options, with support for custom colors.  

6. Patented SSF ratchet structure, offering a more streamlined, lubricated, efficient, and lower failure rate design.  

7. Larger-sized axle and bearings for enhanced durability and performance.  

8. Race geometry with a 2:1 large flange drive for higher efficiency and superior rigidity.  

9. TC4 titanium alloy freehub, offering corrosion resistance, durability, and ultra-low wear.  

10. Bearing preload adjustment to extend bearing life and improve smoothness.  

11. Simple structural design: Except for bearings requiring tools for installation and removal, other components can be disassembled instantly, making maintenance exceptionally easy and extending service intervals.