SRAM XX1 EAGLE 170x34 DM DUB XSYNC2 w/oCUPS LUNAR-GY BOOST 148 COMPATIBLEEagle represents Sram`s newest 1x drivetrain technologies DUB technology delivers the lightest, stiffest, strongest crankset available Eagle is a lighter, tougher, quieter, more durable and more precise drivetrains Eagle features all new 1x components, engineered for even greater durability and performance Eagle technology allows an expanded, optimum, 500 percent gear range a 20 percent increase over our other 1x All new Sram Carbon Tuned crank