Shimano 105 FC-RS520 12-Speed Road Crankset 50/34t 170mm | Alloy, Asymmetric BCD JPA/JPA2/JPA3/JPA4//JAL/JAL2/JAL3//JIN/JIN2/JIN3//JMN/JMN2/JMN3//JNY/JNY2//JCO/JCO2/JCO3//JNC/JNC2/JNC3/ Designed with a 36h spoke

Designed with a 36h spoke count and 135mm dropout spacing

Innovative construction combines polyester and nylon components for superior durability

and pry tool

providing a snug fit that improves pedal efficiency and reduces foot fatigue

while a non-slip heel cup ensures secure foot placement and stability throughout intense rides

Shimano 105 FC-RS520 12-Speed Road Crankset 50/34t 170mm | Alloy, Asymmetric BCD JPA/JPA2/JPA3/JPA4//JAL/JAL2/JAL3//JIN/JIN2/JIN3//JMN/JMN2/JMN3//JNY/JNY2//JCO/JCO2/JCO3//JNC/JNC2/JNC3/ Designed with a 36h spokeUpgrade Your Road Cycling Performance with the Shimano 105 FC RS520 Crankset 170mm, 12 Speed, 50 34T, 110 Asymmetric BCD Optimize your road bike with the Shimano 105 FC RS520 crankset, engineered for seamless power transfer, durability, and advanced technology. Crafted with precision, this lightweight 2 piece, 4 arm crankset is designed to elevate your cycling experience whether you're tackling climbs, sprints, or long distance rides. Materials &