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 generation in the braking system. This ensures consistently high braking performance even on steep descents. With the Shimano Center Lock mounting system, brake discs can be quickly and easily installed thanks to the locking ring design. Ice Technologies, combined with the Freeza brake disc design, facilitates rapid heat dissipation. This results in more uniform braking performance under extreme conditions, extends the lifespan of the brake pads, and reduces power loss and brake noise. Lightweight disc brake pads with heat-dissipating, painted, protruding aluminum layer segments ensure excellent cooling performance, consistent braking force, and easier operation in all conditions. Disc brake pads with aluminum and stainless steel cooling fins dissipate heat quickly. This reduces maintenance requirements, extends the lifespan of the pads, and decreases braking force loss as well as brake noise.