Shimano Dura Ace Ultegra R55C4 Carbon Brake Pad Inserts w/ Fixing Bolts. Shimanos racing brake cartridges provide the ideal hardness for high stopping power combined with great levels of control.

Specifications:
Brake Type: side-pull, cantilever, side-pull direct mount
Cartridge Type: yes

Characteristics:
Dry Power: above average (4 out of 5)
Wet Power: average (3 out of 5)
Silence: average (3 out of 5)
Anti-Fading: high (5 out of 5)
Durability (Street): high (5 out of 5)
Durability (Mud): high (5 out of 5)
Rim Friendly: above average (4 out of 5)

Model Index:
black
Pad Compound: R55C4
Rim Brake Track: carbon
Factory Number: Y-8L298072
Compatibility: Dura Ace BR-R9100, BR-R9110, BR-9000, BR-9010, BR-7900, BR-7800, BR-7700 / Ultegra BR-6800, BR-6810, BR-6700, BR-6600, BR-6500 / 105 BR-5800, BR-5810, BR-5700, BR-5600, BR-5501, BR-5500 / BR-R650, BR-R600, BR-R561, BR-R560, BR-CX70