Shimano 105 FC-RS520 Crankset - 165mm 12-Speed 50/34t 110 Asymmetric BCD Hollowtech II Spindle Interface BLK MPFN-FD40187-10 Features SRAM X-actuation technology for

Features SRAM X-actuation technology for quick and smooth shifting

Direct Mount Type Direct Mount SRAM Tooth Count 44 Drivetrain Speeds 9 Drivetrain Speeds 10 Drivetrain Speeds 11 Drivetrain Speeds 12 Defined Color Black Material Aluminum Ring Position/Type Chain Retaining Single Ring Round or Oval Round Offset 6 Chainline/Hub Compatibility 130 Hubs Chainline/Hub Compatibility 135/142 Road Disc Hubs < 415 mm Chainstay

Waterproof and easy to open and close flap top make this a great bag for around the town errand running

Made from heat-treated S2 tool steel ensure high strength and lasting performance

This means that threads are always perfectly aligned preventing binding and ensuring consistent clamping force

Shimano 105 FC-RS520 Crankset - 165mm 12-Speed 50/34t 110 Asymmetric BCD Hollowtech II Spindle Interface BLK MPFN-FD40187-10 Features SRAM X-actuation technology 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 BB Included No Chainline Hub Compatibility 135 142 Road