Shimano Ultegra 12 speed DI2 - Shifter and Caliper - Rear

Your 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 smaller construction, the system is quieter than ever and easier to maintain.

• The wireless connection provides a clean cockpit, enhancing the aerodynamic effect and easy maintenance
• Wider pad clearance decreases brake noise
• Maintenance-friendly bleeding process
• Unparalelled ergonomic features, such as raised hood peaks on levers
• Brake control is optimized with light and smooth lever action
• Enhanced modulation thanks to an expanded braking control area

First, you'll get 5% back in store credit to use towards future purchases.

When you purchase through us, you get:

• Advice on whether the bike or product suits your needs.
• A professional build for all bikes, which ensures safety. If there is an issue, we can promise you that 99 out of 100 times, it will be resolved quicker than you can in your garage.
• A build history that becomes a service history, ideally. That can be very helpful if you do have any sort of warranty issue.
• Warranty support - Just contact us and we will guide you through the process.