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The Spirit hub is forged from a single piece of CrMo material. This results in a beautifully simple, strong and reliable hub.

The centre of the axle tapers slightly giving an hour-glass shape to reduce weight all while maintaining strength. The 36-hole flanges are widely spaced and shaped to maximize wheel strength. Spoke holes are beveled and slightly de-tempered (softened) to minimize spoke breakage. The 42 mm bearings are extremely durable: Evolution of Balance Award Winner Cary Gray rode his loaded KH36 more than 10,000 km before needing a replacement set. Compatible with all ISIS spline cranks.


Together, the Spirit hub and Spirit cranks provide a strong, stiff, and lightweight setup for all types of riding. With Spirit disc brake cranks, this setup provides the high geometric strength of widely spaced flanges in a symmetrical wheel, with no requirement to remove a bearing to install the disc rotor.


Spirit CrMo
Axle: Forged Hour-glass CrMo
Flanges: Forged with axle
36 hole
Axle Bolt: M12
Weight: <580g

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.

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