Read First before buying a single Sram AXS Piece!! Sram AXS is an excellent upgrade for those wanting to switch from manual shifting to electronic shifting. These are 12 speed components, and each part requires the purchase of the entire 3 group sets and is not compatible with any other Sram 11 spd, 10, spd set up’s. Prepare to spend $4,200 for 2x road setups & $2,900 1x TT/ Tri set up for completion. Do not think you can buy a single axs piece and get away with it, you will not be able to use it again without purchasing entire (3 group sets) Do your home work before purchasing a single piece. You’ve been warned.