• 105 R7000 Series • Hollowtech II technology for optimum power transfer • Lightweight but rigid and strong crank design Specifications • Compatible with 2x11 speed drivetrains • Crank length: 172.5mm • Chainring combination: 52/36T • Recommended BB: SM-BB72-41B (Pressfit); SM-BBR60 (Threaded) • Compatible chain: HG-EV 11-speed; HG-X11 • Chain line: 43.5mm • B.C.D: 110mm • Q-factor: 146mm • Approx. weight: 755g