105 12 Speed Crankset FC RS520 Black 165mm Arm 50 34T Chainrings 110mm Bolt Circle Four Bolt Sweet Shifting And Crisp Power Transfer On Road Bikes For Road Bike Rides And Daily Commutes

105 FC-RS520 12-Speed Crankset with 34-50T and 110mm BCD
✔️ 12-speed crank with 34/50t, 110mm BCD, 4-bolt, 165mm-175mm arms

This road bike crankset is designed for road riding, common on new builds, upgrades, and daily commutes. It uses a 34/50T chainring setup with a 110mm bolt circle diameter to match standard setups.

✅ Arm material: aluminum
✅ Arm lengths: 165mm, 170mm, 172.5mm, 175mm
✅ Chainring sizes: 34t and 50t
✅ Bolt circle diameter: 110mm, bolts: 4

💡 What is a road bike crankset and why upgrade to a 12-speed system? A handy upgrade for riders looking to improve gearing and shift feel on paved roads.

• 12-speed compatibility enhances gear variety for climbs and flats
• Crisp power transfer with aluminum crankarms for efficient pedaling
• Chainring combo 34/50t keeps fast starts and solid cruising
• 110mm BCD maintains broad cassette compatibility