Completely re-designed for 2016, the KH-Schlumpf geared hub adds an entirely new dimension to your riding. The second gear increases versatility by increasing your top speed without losing any climbing torque or maneuverability in first gear. Designed for both on- and offroad use. Hand made in Switzerland in collaboration with Schlumpf Innovations.

New for 2016:

  • Standard hub (100 mm) and wide hub (125 mm) models now available
  • Standard model is compatible with the External Disc Brake (EDB) standard
  • Wide model is compatible with hub-mount disc brakes
  • Improved bearing and flange durability
  • Axle bolts are now compatible with larger 8 mm hex key
  • New torque block (small protruding nub) in the knurled bearing securely locks it within the frame bearing housing


  • The 2016 Standard KH/Schlumpf hub is compatible with all KH frames produced since 2012.  Minor modification may be required to the bearing housings of other frames to fit the torque block.
  • The 2016 Wide KH/Schlumpf hub is only compatible with frames designed to fit 125 mm hubs and is not compatible with standard disc rotors. It is supplied with a disc rotor to fit the hub.

Watch how the KH/Schlumpf geared hub is made from the Discovery Channel TV show How It's Made:


2016 Standard Hub (100mm)
Weight: TBA
Gear Ratios: 1:1 or 1.5:1
Axle: ISIS spline
Capability: All KH frames. Fully disc brake compatible with KH frames produced after June 2012.
2015 & Earlier Model
Weight: 1420 g
Gear Ratios: 1:1 or 1.5:1
62 mm triple bearings with dust protection rings, for high bearing durability and strength
Axle: ISIS spline
Capability: All September 2006+ KH frames
Wheel Building
Flange Diameter: 91.5 mm
Flange Spacing: 66.7 mm (width)
Spoke Hole Diameter: 2.9 mm
Spoke Lengths: 227 mm (24” rim), 251 mm (26"), 282 mm (29" rim), 360 mm (36" rim)

Our Commitment

Kris Holm Unicycles prides itself on producing equipment that lasts through years of long rides with minimal maintenance or repairs. Should you have any concerns about the quality of your KHU product please refer to our Warranty Policy or contact us.


Important Information Regarding the Use of the KH-Schlumpf Geared Hub

Geared hubs can be dangerous due to the high potential speed and the risk of unplanned dismounts during shifting. Ride within your limits!

Important Information Regarding the Use of the KH-Schlumpf Hub with Spirit EDB Cranks

The KH/Schlumpf Geared Hub is currently NOT compatible with the External Disc Brake (EDB) standard as supplied. Riders choosing to modify KH equipment to use disc brakes in conjunction with the KH-Schlumpf geared hub are strongly encouraged to review the following safety disclaimers.