Shimano 105 FC-RS520 Crankset - 165mm 12-Speed 50/34t 110 Asymmetric BCD Hollowtech II Spindle Interface BLK MFPN=BEE0390-CC30 2 are not intended for

2 are not intended for use with brake systems that utilize ceramic pistons such as Shimano road disc brake calipers

5L Bag Attachment BOA Waterproof Yes

(mm) 40 Bearing Type Cartridge Bearing O

technical thread stitching

Bosch Generation 2/Yamaha ISIS spindle compatible

Shimano 105 FC-RS520 Crankset - 165mm 12-Speed 50/34t 110 Asymmetric BCD Hollowtech II Spindle Interface BLK MFPN=BEE0390-CC30 2 are not intended forShimano 105 FC RS520 Crankset 165mm 12 Speed 50 34t 110 Asymmetric BCD Hollowtech II Spindle Interface Black. The Shimano 105 FC RS520 is a 2 piece 4 arm crank thats 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 TECH SPECS Color Black Rings 50 34 Number of Chainrings Double