Rene Herse One-By Crank

Rene Herse cranks are ideal for one-by setups: Light, strong and easy to dial in. The one-by chainrings have alternating ‘thick/thin’ teeth that have been optimized to mesh perfectly with the chain. The chain won’t derail and fall off even with the extreme chain angles of 11- or 12-speed drivetrains.

We offer a choice of crankarms: If you’ll only ever want to run a single chainring, our single-specific crankarms are the lightest and most elegant. Or choose our convertible crankarms that use a custom-machined spacer on the chainring tab – that way, it’s easy to install a second (and even third) chainring in the future.

Recommended bottom brackets:

• SKF JIS 107 mm for standard 45 mm chainline
• SKF JIS 110 mm for 48 mm chainline on bikes with widely-spaced chainstays
• Most other bottom brackets have slightly thinner spindles—use a BB spindle that is 2-3 mm longer than SKF.

Rene Herse crank bolts and pedal washers are included. Cranks are custom-assembled based on your order. Please allow 7-10 days until your order can ship.

Pro Tip: For 12-speed drivetrains, we recommend the SRAM flat-top chains for Rene Herse one-by cranks. For 11- or fewer speeds, most chains work well. We recommend SKF JIS bottom brackets.