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they feature a lightweight construction
Boost 15x110 front axle for responsive handling
The synthetic leather upper offers durability and breathability
it’s ready for the singletrack or the daily grind
With six precision-fit sizes and a fold-out design
Shimano ST-R8170 Ultegra Di2 Lever with BR-R8170 Disc Brake Caliper electronics they feature a lightweight constructionThe Shimano ST R8170 Di2 Lever with BR R8170 Disc Brake Caliper delivers refined control and performance for modern road riding. Featuring wireless Di2 electronic shifting, the ST R8170 lever offers crisp, precise gear changes with an ergonomic shape designed for comfort and responsiveness. Paired with the BR R8170 hydraulic disc brake caliper, it provides powerful, consistent braking in all conditions. Whether you're assembling a front or rear setup,