SHIMANO FC-RS520 crankset 170 mm

Road crankset for 12-speed with 4-arm design This 2-piece crank uses an outboard, 24 mm bottom bracket and features 2x12 speed 50-34T chainrings. It uses a 4-arm construction and is compatible with modern disc brake road frames. Features: Affordable and high-end style crankset: - 4-arm crankset for 12-speed drivetrain - Compatible with frames of O.L.D. 135 mm and 410 mm chainstay length - 2-Piece Crankset Specifications: - Threaded bottom bracket shell width (mm)_70: Yes - 2-PIECE CRANKSET: Yes - Chainring combination: 50-34T - Compatible bottom bracket type_Outboard: Yes - Crank fixing screw included: yes - Crank arm length (mm)_165: yes - Crank arm length (mm)_170: yes - Crank arm length (mm)_172.5: yes - Crank arm length (mm)_175: yes - Spider/Gear arms: 4 - Optional chain guard_Without chain/bash guard: yes - Recommended bottom bracket_Press-fit: BB-RS500-PB - Recommended bottom bracket_Threaded (normal): BB-RS501 - Threaded bottom bracket shell width (mm)_68: yes - Q-factor (mm): 150 - Chain line (mm): 44.5 - Compatible chain: HG 12-speed - P.C.D. (mm): 110 - Rear speeds: 12 Technology: 2-piece crank set: - Integrated crank arm and bottom bracket: Increased rigidity with less weight - Wider bearing positioning: Rigidity is enhanced and pedaling force is efficiently transmitted - Precision Bearings: Low maintenance and simplified installation