Shimano 105 FC-RS520 Crankset - 172.5mm 12-Speed 50/34t 110 Asymmetric BCD Hollowtech II Spindle Interface BLK MFPN=00.4118.419.028 Stainless steel bits in a

Stainless steel bits in a beautiful green anodized frame

Mounts directly to XX T-Type chainring (Not compatible with XX Power Meter spiders or XX SL chainrings)

Updated design for smoother and faster shifting

Featuring an aerodynamically optimized 40mm rim depth front and rear with a 25mm internal rim width the AR40 is designed to deliver ultimate versatility for the road ride and racer looking for performance on and off-road

Shimano 105 FC-RS520 Crankset - 172.5mm 12-Speed 50/34t 110 Asymmetric BCD Hollowtech II Spindle Interface BLK MFPN=00.4118.419.028 Stainless steel bits in aThe 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) 172. 5 Crank Intended Use Road Drivetrain Speeds 12 BB Included No Pedal Spindle 9 16" Spindle Interface