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Completely re-designed for 2023, the KH-Schlumpf geared hub adds an entirely new dimension to your riding by adding a second gear.
The second gear increases versatility by increasing your top speed without losing any climbing torque or maneuverability in first gear. In second gear, a 24" unicycle is like a 36", a 27.5 like a 41", a 29" like a 44", and a 36" like a 54.
The 2023 model features a hub-mounted disc rotor and is available for both 100 mm and 125 mm bearing spacing. The internal rotor increases braking power in second gear and enables simultaneous braking and shifting. Hand made in Switzerland in collaboration with Schlumpf Innovations.
| Weight: 1650g (100 mm model) or 1750g (125 mm model) |
| Gear Ratios: 1:1 or 1.5:1 |
| Axle: ISIS spline |
| Options: available in 100m or 125 mm width (bearing centre-centre), 32 or 36 hole. Riders can choose a standard fixed setup, or a freewheel option that enables coasting. Supplied with a Schlumpf-specific disc rotor in 160, 180, or 203 mm width (standard disc rotors do not fit). We recommend a larger rotor to provide greater breaking power. Consider the fixed option unless you are sure that you would like to take on the challenge of coasting at speed. |
| Spoke length: Visit the Unicycle.com Spoke Length Calculator to obtain measurements for your wheelset. |
| Capability: 2023 KH Unicycle Frames. Requires a disc brake mount on the left side of the frame and is only compatible with disc rotors produced by Schlumpf Innovations (included with the hub). 203 mm disc rotor recommended. |
| 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. |
| 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 |
| 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) |
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 installation, maintenance & safety instructions for the 2023 KH-Schlumpf shiftable unicycling hub (doc version: 2023/05)
Geared hubs can be dangerous due to the high potential speed and the risk of unplanned dismounts during shifting. Ride within your limits!
Due to the potential for oil leakage, DO NOT store the hub on the expensive oriental carpet!!!
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.