DUE LATE OCTOBER

By adopting the proven rim profiles of the Artech series (without the Aeroscales) the R4.G delivers best in benchmark-tested aerodynamic performance. With steel spokes and a total weight of just 1439 grams, it is the ultimate gravel wheelset, built to excel both in the heat of competition and in the demands of daily training.

Beyond its low weight and aerodynamic advantage, the R4.G combines exceptional lateral stiffness with uncompromising durability. Its 28 mm internal width hookless rim is aerodynamically optimized for 40 mm tubeless tires, offering the perfect balance of rolling resistance, efficiency, and comfort. Meanwhile, the mechanical labyrinth system protects against dirt ingress, ensuring long-term reliability and consistent performance.

Algorithm Enhanced Aerodynamics
The shape of our rims is defined by our Algorithm Enhanced Aerodynamics (AEA) technology. This algorithm optimizes the most aerodynamic rim-profile guaranteeing optimal aerodynamic performance.
Lightweight design
With our Local Reinforcement carbon technology, we’ve increased the number of carbon layers around the spoke holes on the inside of the rim. This way we significantly reduce weight while preserving strength and stiffness.
Perfect tire-fit
The unique geometry of our Scope Tubeless System ensures easy mounting, direct inflation, long-lasting pressure and compatibility with all clincher and tubeless tires.
Lightweight and durable
The Diamond Ratchet SL system is made from titanium and finished with a diamond like carbon coating. This results in direct engagement, improved durability, and a significant reduction in weight.

Specifications
Maximum rider weight
No weight limit
Max tire pressure
8.6 bar / 125 psi

Rims
Front
Rear
Rim height (mm)
45
45
External rim width (mm)
38
38
Internal rim width (mm)
28
28
Tubeless (ready)*
Yes
Yes
Hooked
No - hookless
No - hookless
Optimum tire width (mm)
40
40
Tire width compatibility (mm)
35 - 65
35 - 65
* Compatible with hookless approved tubeless tires
Hubs
Front
Rear
Hubs
Scope R-Series
Scope R-Series
Bearings**
2 X 61803 - SKF
3 X 61803, 1 X 61903 - SKF
Engagement system
36T Diamond Ratchet SL
Axle System
12 X 100
12 X 142
Brake Interface
Centerlock
Centerlock
Labyrinth system
Yes
Yes
Spokes
Front
Rear
Spoke count
21
24
Spoke type
Sapim CX-Ray
Sapim CX-Ray

Mfr Claimed Weight
1439g * Measured without rim-tape and tubeless valves, variation of ± 5% possible