Shimano RT-EM910 brake discs for speed sensor systems provide powerful and consistent braking performance in all conditions. The compact and lightweight ICE Technologies Freeza brake disc significantly reduces heat buildup in the braking system, ensuring consistently high braking performance even on steep descents. The Shimano Center Lock mounting system allows for quick and easy installation of the brake discs thanks to its securing ring design. ICE Technologies, combined with the Freeza brake disc construction, facilitates rapid heat dissipation. This results in more uniform braking performance under extreme conditions, extends the lifespan of the brake pads, and reduces brake force loss and noise. The lightweight brake discs feature heat-dissipating painted protruding aluminum layer segments that deliver excellent cooling performance, consistent braking, and easier handling in all conditions. The brake pads with aluminum/stainless steel cooling fins quickly dissipate heat, reducing maintenance needs, extending the lifespan of the brake pads, and minimizing brake force loss and noise. The Center Lock system of the brake disc with a multi-tooth profile and securing ring simplifies installation. This system allows for quick mounting and dismounting of the brake disc, saving on service costs.