Shimano 8170 Di2 Rh Sti W/Bk Kids Bikes straight-pull spokes are laced to

straight-pull spokes are laced to center lock hubs with reliable

Shifters Shimano® 8-Speed SL-M310

so we don't blame you if you "forgot the milk/beer/wine" and need to ride back to the store to pick it up

and reflective piping around the hem illuminates for visibility

8 mm body height from axle centre to cleat contact surface Silky smooth 3-bearing axle system

Shimano 8170 Di2 Rh Sti W/Bk Kids Bikes straight-pull spokes are laced toYour time on the bike is precious let Shimano make it even better. Ultegra ST R8170 brake levers bring enhanced modulation and control to every ride by employing Shimano s proven SERVO WAVE technology. The Di2 platform untethers the shifters while delivering fast and reliable wireless shifting. BR R8170 disc brake caliper brings a new level of control to the road cycling world with improved modulation and a quicker initial braking point. Despite its