SRAM RED AXS TT/Triathlon Groupset Description: Aerodynamics, simplicity, perfection. SRAM RED AXS TT Groupset is a complete shifting system that integrates controllers directly into the Vuka 90 Extension making for a clutter-free cockpit with state-of-the-art wireless technology. Easy to pair with all AXS components and Hammerhead computers for a plethora of data at your fingertips. Get the most out of your hard training efforts and deliver results with help from SRAM. Note: RED Aero 1x Crankset and RED Cassette sold separately. Features: Vukashift TT extension bars deliver ultimate aerodynamics with integrated AXS controllers Orbit chain management technology on the rear derailleur stabilizes the chain over rough roads for a quiet and secure ride Wireless AXS technology for easy installation and use, pair with the Karoo for real-time battery life and much more Compatible with all SRAM AXS components and utilize the same battery interface for versatility Flattop Chain technology is designed with HollowPin construction and precise machining to further reduce weight while adding strength to create the lightest and strongest road chain possible Specifications: Speed: 1 or 2 x 12 Speed Shift Mechanism: Electronic (Wireless) Color: Black/Carbon Groupset Includes: (1) eTap AXS Blips (1) ZIPP Vukashift AXS 90 Carbon Extension w/Electronic Controllers (1) RED AXS E1 Rear Derailleur (1) RED E1 Flattop Chain (1) AXS Battery (1) AXS Charger Groupset Does Not Include: RED Aero 1x Crankset RED Aero 1x Power Meter Crankset SRAM RED Cassette SRAM DUB Bottom Bracket Popular Add-Ons: Hammerhead Karoo GPS Cycling Computer