Shimano 105 FC-RS520 Crankset - 170mm 12-Speed 50/34t 110 Asymmetric BCD Hollowtech II Spindle Interface BLK Length-105 with x2 SALTPLUS "PRO" Nylon

with x2 SALTPLUS "PRO" Nylon hubguards TIRES: SALTPLUS "BURN" tires

142mm thru axle

CPSC Safety Standard for Bicycle Helmets for Persons Age 5 and Older Helmet Style Mountain Maximum Head Circumference 58 Defined Color Black

75" chain stays

Shimano 105 FC-RS520 Crankset - 170mm 12-Speed 50/34t 110 Asymmetric BCD Hollowtech II Spindle Interface BLK Length-105 with x2 SALTPLUS "PRO" NylonThe 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