Compared to the previous 105 groupset (5700) Shimano made the brake system more efficient and increased brake power with 10%. This is mainly due to the new symmetrical dual-pivot brake caliper. The brakes are compatible up to 28c tires.
|V-Brake and U-brake||Brakes|
|Average weight||0.33 kg|
|Catalog numbers||IBR5800AF82XL, IBR5800AF82XS, IBR5800AR82AL, IBR5800AR82AS|