Shimano Ultegra BR-RS811 Direct Mount Rear Rim Brake Caliper RGroup_950B846E364360AA9852C429250EB7E683155EE5 it improves gearing efficiency for

it improves gearing efficiency for varied terrains

it won't add unnecessary weight to your bike

featuring an o-ring and locknut

Its formula fills nano imperfections

Shimano Ultegra BR-RS811 Direct Mount Rear Rim Brake Caliper RGroup_950B846E364360AA9852C429250EB7E683155EE5 it improves gearing efficiency forThe Shimano Ultegra BR RS811 Direct Mount Rear Rim Brake Caliper delivers precise, dependable braking with an excellent blend of rigidity and low weight. Its sleek, integrated low profile Direct Mount design helps keep the setup clean and aerodynamic while maintaining strong stopping power for everyday rides and spirited training. Built to suit riders running up to 28C tyres, its a smart upgrade for those wanting sharper control at the rim.