Classic PRO D30-88 Disc Brake Black Decals PILLAR WING21 Spokes
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Spoke Tension Balance
The spokes of the rim brake version's rear wheel and the disc brake version's front and rear wheels all use a 2:1 flat braid method to reasonably distribute spoke tension, making the pedaling transmission more powerful.
The rear wheel drive side spoke tension is 120kgf ± 10%
Non-drive side spoke tension is 100kgf ± 10%
Compared with the 1:1 weaving method, the balance is improved by about 100%
88mm Deep-Section Aero Wheelset
An 88mm rim depth significantly enhances the aerodynamic profile of the wheel, leading to superior aerodynamic performance during high-speed riding. The 30mm external width provides a broader rim cross-section, which helps create a more favorable aerodynamic shape. When the rim and tire widths are well-matched, they form a smoother transition, which minimizes airflow separation and thereby reduces aerodynamic drag.
NBK Ceramic Bearings
The Classic Pro comes with ceramic bearings. Ceramic bearings use ceramic races, which can be lighter in weight and have less rotational friction resistance. The surface of the ceramic material is smooth, and the friction coefficient is low, which allows the bearing to reduce energy loss during operation and improve your riding efficiency.
Spokes And Hubs
Spokes and wheels have been upgraded from the classic version to ceramic bearing wheels and straight pull spokes, while the disc version gets a rear wing 21 spoke. 21-spoke wing wheels are usually aerodynamic, meaning that the shape of the wheel and the layout of the spokes reduce air resistance, resulting in increased riding speed and efficiency. Although the wheels are designed to be lightweight, they are still generally strong and rigid, able to withstand high forces and pressures and maintain a stable ride.
