Rene Herse 34T 1X Crankset


Rene Herse 34T 1X Crankset

Rene Herse announced a 34T 1X crankset ($455), offering better gearing without messing with your derailleur or cassette…

If you like the look of 44t cassettes and normal length cages on your derailleurs when it comes to a gravel bike, you might find that a 42t or 40t chainring doesn’t give enough gear inches to climb mountains. That’s what drove Rene Herse to develop a 34t 1X crankset. The 15% gear reduction from a 40t ring gives you just enough gearing to make it up that steep, loose pitch.


  • Bottom bracket:
    • JIS taper
      for 45 mm chainline: 110 mm spindle (SKF 107 mm)
      for 48 mm chainline (most bikes): 113 mm spindle (SKF 110 mm)
      Narrow Q factor: 139 – 145 mm (depending on spindle length)
  • Length: 165, 171, 177 mm
  • Compatible with 5- to 12-speed chains
  • Arms only (165 mm): 372 g
  • Complete crankset (171 mm, 40-tooth chainring): 476 g
  • Forged 2014 arms for high strength
  • CNC-machined 7075 chainrings for long wear
  • Meets EN “Racing Bike” standard for fatigue resistance
  • Assembled in Seattle from parts made in Taiwan and USA
  • 10 year warranty

Check ’em out at Rene Herse.