Shimano Dura-Ace Brake Shoe

These specific brake shoes are designed for Dura-Ace R9100 and 9000 series calipers. They may not fit older or lower-tier Shimano road calipers, so please verify your specific brake model before purchasing.

The primary advantage is weight reduction. By using magnesium, Shimano minimizes unsprung weight, which helps keep the bike's overall mass low without sacrificing the structural rigidity needed for consistent braking performance.

No, the R55C4 compound included with these shoes is specifically engineered for aluminum braking surfaces. Using them on carbon rims can cause damage to the rim surface and result in poor stopping power.

The R55C4 compound is designed to provide reliable, consistent modulation across a variety of road conditions. While it offers excellent bite on dry pavement, it is also formulated to maintain predictable stopping power when the road gets wet.

These are complete brake shoe assemblies, which include both the magnesium holder and the pads. Once the pads wear down, you can simply purchase replacement R55C4 inserts to slide into these existing holders.