Shimano's 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. Your time on the bike is precious, let Shimano make it even better.
The wireless connection provides a clean cockpit, enhancing the aerodynamic effect and easy maintenance
Unparalleled ergonomics engineering refined with feedback from professional riders
Raised hood peak improves ergonomics
Brake control is optimized with light and smooth lever action
Enhanced modulation thanks to an expanded braking control area
Compatible with wireless or wired connection
High electronic energy efficiency, with 1.5 to 2 years of battery life from CR1632 shifter batteries
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Went with the rival setup instead of force and I am super happy that I did. If you don’t need the extra button on the hoods, these are probably the best value item in the AXS drivetrain.
The S-Works Prevail 3 is one of the most comfortable bike helmets I’ve worn. The fit system adjusts perfectly, and once I ratchet the MIPS cradle to my head, the helmet almost disappears — it conforms so well that I barely notice I’m wearing it.
Ventilation is excellent. Riding in moderate weather around the mid-70s, my head stayed cool and comfortable without overheating. The airflow design really works.
Thankfully, I haven’t had to test the helmet in a crash, and I hope I never do. But the build quality and design give me a lot of confidence in the protection it offers. Highly recommended.
S-Works Prevail 3
JDLPHL
Amazing frameset - shipped fast - great pricing
Very impressed by the whole experience with Sierra Bicycle Supply! The frameset was just as shown - brand new and gorgeous. It shipped fast with tracking info. Great pricing on the frameset and I picked up other stuff for my build. Great overall experience - highly recommended!!
Tarmac SL8 Frameset
James Welch
Sick bike!
Amazing bike at super price. Free shipping. Highly recommend buying from these guys.
