Shimano

R600 34/50 Compact Crankset

Shimano FC-R600: 105-level compact crank with Shimano logo graphics.

• Compact specific chainring design works with all Shimano 10-speed front derailleurs
• Hollowtech-II bottom bracket spindle integrated with right crank for increased rigidity, left arm mounts to splined spindle
• SG-X Hyperdrive 10-speed aluminum chainrings:
• 765g @ 170mm
• Outboard, alloy bottom bracket bearing cups sold separately

Confused about bottom bracket standards and what it is you need? Here's a comprehensive look at the subject: The Bottom Bracket (Un)Standard blog post.