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/ providing a snug fit that

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

or riders seeking a versatile upgrade that performs across multiple disciplines

reliable connections in critical situations

insulating materials to provide exceptional warmth during cold winter 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/ providing a snug fit thatUpgrade 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 &