* The SRAM RED eTap Aero group is a 1x system for ultimate aerodynamics. New X-Range cassettes offer the range you need, while the SRAM RED 1 crankset offers improved aerodynamics.* Offering classic eTap shift logic with an updated ability to connect and personalize your bike though the AXS app, you’ll shift more, with less effort and spend less time doing it.* Featuring a significantly reduced size, the new SRAM eTap AXS BlipBox is now easier to integrate into your aero frame, improving aerodynamics and allowing for an even sleeker look.* One rear derailleur for all gearing combinations, including 1x and 2x so those who want to add a front derailleur can easily do so* Orbit chain management system and a unique Flattop chain for a reassuringly quiet, secure and smooth ride, whatever the terrain* Includes: 2 x 650mm Blips, 2 x 650mm Clics, Blip Box, Rear Derailleur and battery, Charger and cord, and Quick Start Guide