Shimano 105 FC-RS520 Crankset - 170mm 12-Speed 50/34t 110 Asymmetric BCD Hollowtech II Spindle Interface BLK CheckoutTitle=Vittoria Mezcal III G2.0 Mountain Tire Downtube protection provides great benefits

Downtube protection provides great benefits starting from the aesthetics side right over to the functionality/durability of the bike

Durable city tire designed for commuter and cargo bikes with 3mm belting for improved puncture resistance

grip durability and low weight

Wolf Tooth T47 Internal bottom Brackets are engineered to be smooth durable lightweight fast and user-serviceable

Pro level competition tire

Shimano 105 FC-RS520 Crankset - 170mm 12-Speed 50/34t 110 Asymmetric BCD Hollowtech II Spindle Interface BLK CheckoutTitle=Vittoria Mezcal III G2.0 Mountain Tire Downtube protection provides great benefitsThe Shimano 105 FC RS520 is a 2 piece 4 arm crank that's compatible with modern disc brake road frames. 4 arm crankset for 12 speed drivetrain Compatible with frames of O. L. D. 135mm and 410mm chainstay length 44. 5mm chainline 150mm Q factor Compatible with HG 12 speed chains Color Black Rings 50 34 Number of Chainrings Double Crank Length (mm) 170 Crank Intended Use Road Drivetrain Speeds 12 BB Included No Pedal Spindle 9 16" Spindle Interface Type