R4.A
All-Road | Outstanding All-rounder
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Developed in
The Netherlands
We develop our wheels in-house without any compromise to achieve the perfect balance between aerodynamics, weight, stiffness and durability. Each single detail of our wheels is developed in-house from our headquarters in The Netherlands.
Optimized Aerodynamics
The rim profile of our wheels is developed using our Algorithm Enhanced Aerodynamics (AEA) technology. This algorithm calculates the most aerodynamic rim profile to ensure optimum performance.
Ultra-light and durable
The hubs feature our Diamond hardened Ratchet engagement System for direct engagement, improved durability, and a significant reduction in weight.
Lightweight
With our Local Reinforcement carbon technology we increase the number of carbon layers only around the spoke holes on the inside of the rim. This way we significantly reduce its weight, while preserving the 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 (tubeless) tires.
Specifications
General
Total set weight
1583 gram
Recommended tyre width
Road tires: 28 - 32mm
Gravel tires: 35 - 57mm
Maximum rider weight
No weight limit
Rims*
Front
Rear
Rim height
45 mm
45 mm
External rim width
30 mm
30 mm
Internal rim width
23 mm
23 mm
Tubeless (ready)
Yes
Yes
Hooked
Yes
Yes
* Compatible with all clincher tires in combination with inner-tubes as well
Hubs
Front
Rear
Hubs
Scope R-series
Scope R-series
Bearings
SKF*
SKF*
Bearings (Rim Brake)
Custom 2 X 61803*
Custom 61803 + 61903*
Engagement System
Diamond Ratchet 36T**
Axle System***
TA 100 x 12 mm
TA 142 x 12 mm
* CeramicSpeed bearings optionally
** 48T optionally
*** Special end-caps available for different axle configurations
** 48T optionally
*** Special end-caps available for different axle configurations
Spokes
Front
Rear
Spoke Count
21
24
Spoke Type
SAPIM CX - SPRINT
SAPIM CX - SPRINT
Ultra-light Diamond Ratchet Hub
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