Sram Red Axs D1 Direct Mount

Features:- AXS enabled for easy monitoring and firmware upgrades- X-Range gearing technology gives you more range and a smoother gear progression, so you´re always in the right gear- Integrated power measurement- Power meter is fully integrated into the chainring set for lighter weight- Power readings are accurate within +/-1.5% and aren´t affected by climate conditions during a ride- Improved front shifting performance for crisp and accurate front shifts- Unique chainring shape results in a lighter weight, stiffer, more durable crankset- Integrated chainring design significantly reduces weight- 8-bolt direct mount compatibility only to new RED and Force eTap AXS cranks. Not reverse compatible with prior 8-bolt cranksSpecifications:- Teeth: 52/39T combinations require dual mount SRAM RED eTap AXS front derailleur, included.- Speeds: 12- Chainring material: aluminum- Bolt circle diameter (bcd): direct mount (dm)- Chainring size: 52/39t- Hub spacing compatibility: standard 142mmTechnology:AXS:- AXS is SRAM´s new bike component integration system that connects electronic bicycle components and software. The SRAM AXS app allows riders to see battery status, change component behavior, personalize controls, get maintenance reminders, and update firmware.