SRAM RED AXS POWERMETER 1x 170x48 AERO DUB NoBB SL/GYThe Sram Red 1 AXS power meter offers improved aerodynamics for triathlon and time trial bikes, thanks to direct mount aero chainrings with fully integrated power Single ring drivetrain simplifies functionality Fully integrated power into a direct mount aero chainring Power readings are accurate within + 1. 5% and arent affected by climate conditions during a ride Power balance measures left and right legs separately Sram X Sync wide tooth, narrow