Rene Herse Tandem Triple Crank


Rene Herse cranks are a modern classic. 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

Inner Ring (teeth)
44 42 38 36 34 33 32 30 28 26 24

Tandem Left-Side (teeth)

Crank length: Arm pair with triple chainrings are “drive arms”; the other set (right crank without chainring) are “connecting arms.”

Assembled in Seattle from Taiwan-made parts. 10 year warranty.

We recommend SKF bottom brackets (JIS spindle) for Rene Herse cranks.


Rene Herse cranks remain unsurpassed in their efficiency. The small 70 mm bolt circle allows you to use any chainring combination from 24 teeth upward. The minimalist design with three arms makes this one of the lightest cranks ever made, yet the chainrings are well-supported, and standard chainring bolts are used. Choose between single, double and triple cranks. A triple crank can be converted to double by removing one inner/middle ring and using double chainring bolts.

We’ve updated Rene Herse’s classic design by curving the arms slightly. This provides additional heel clearance and allows use of a shorter bottom bracket spindle. We forge the arms out of the strongest aluminum, and we machine the chainrings out of ultra-hard 7000-series aluminum for optimum wear resistance. We custom-make our bolts. Producing such a minimalist design requires very tight tolerances and superior quality. That is why we have a dedicated engineer supervising the production at our suppliers.

Thanks to our net-shape forging process (which has a dedicated forging die for each crank length), Rene Herse cranks are the only classic cranks that pass the most stringent EN “Racing Bike” standard for fatigue resistance. They have proven themselves over tens of thousands of miles of hard riding.

  • Bottom bracket (drive arms): 121 mm, JIS taper
  • Bottom bracket (connecting arms): length see frame specs, JIS taper
  • Low tread/ 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.
  • Click here for downloadable instructions for Rene Herse Cranks, SKF Bottom Brackets, and our chart for using the two together.

You may also like…