- Bottom bracket (drive arms): 121 mm, JIS taper
- Bottom bracket (connecting arms): length see frame specs, JIS taper
- Narrow Q factor: 153 mm (drive cranks)
- Length: 165, 171, 177 mm
- Forged 2014 arms for high strength
- CNC-machined 7075 chainrings for long wear
- Meets EN 'Racing Bike' standard for fatigue resistance
- Compatible with most drivetrains (up to 10-speed)
- Important: not compatible with Shimano STI or Campagnolo Ergopower shifters.
- Compatible with downtube or bar-end shifters. (If you want to use STI or Ergopower, use Rene Herse double tandem cranks.)
- Important: use "double" front derailleur with a smooth cage. Triple front derailleurs have stepped cages that work only with specific chainring combinations.
- Assembled in Seattle from parts made in Taiwan and USA
- 10 year warranty
- Click here for instructions for Rene Herse Cranks, SKF Bottom Brackets, and our chart for using the two together.
Rene Herse Tandem Triple Crank
Rene Herse tandem cranks are made to the same ultra-high specifications as our single-bike cranks. Thanks to their smart design and net-shape forging, they are among the lightest cranks available today, while offering a great choice of chainrings: from 52 to 24 teeth.
Rene Herse cranks are compatible with modern 10-speed drivetrains, as well as classic 5- to 9-speed systems. (See Technical Specs for details.)
Rene Herse crank bolts and pedal washers are included. The large choice of chainrings allow you to fine-tune your gearing to your riding style:
Outer Chainring (teeth)
52 50 48 46 44 42
Middle and Inner Rings (teeth)
44 42 38 36 34 33 32 30 28 26 24
Tandem Left-Side (teeth)
Crank length: Arm pair with triple chainrings is ‘drive arms’; the other set (right crank without chainring) are ‘connecting arms.’
We recommend SKF bottom brackets (JIS spindle) for Rene Herse cranks.