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New Kris Holm unicycles for 2023

KH 2023 unicycle range

We are proud to announce the release of a major new update to the KH range of products.

Kris has introduced a new hub and brake format for the 2023 season.  Gone is the Spirit (and moment) cranks with their external disc and ISIS interface.  In comes a splined interface with a more traditional internal disc brake with the range name of "Boundary".

Boundary cranks

Boundary cranks are the latest offering from Kris Holm to enable the highest possible strength to weight ratio and pedal performance in a unicycle hub.

Boundary cranks are constructed from tough, stiff 7050 alloy for all types of riding, Boundary Cranks use the Q-Axle micro-spline standard for maximum strength and stiffness.  The Q-axle micro spine is parallel (not tapered) and secures with pinch-bolts on the crank.  This makes it easy to install and remove, without the wear and tear of a tapered spline interface.   Boundary cranks are angled outwards by 8 mm (Q-factor), which maintains a slim profile with just enough clearance to avoid bruised ankle bones.  For geared, KH/Schlumpf hub riders, the crank shape is configured to enable easy shifting and avoid accidental shifts. The Boundary crank comes with two pedal hole options to suit different riding conditions and rider preferences. Compatible with Q-Axle hubs including the Kris Holm Boundary hub. 

Available lengths: 110/127 mm (373 g), 117/137 mm (414 g), 127/150 mm (444 g)


The Boundary hub uses the Q-Axle micro spine, which has a larger (24mm) diameter compared to the ISIS-typical 22mm, enabling high strength at 33% lower weight than the KH Spirit hub. Cranks are fixed by tightening two bolts on the crank, which makes them easy to install and remove without wear-and-tear on the splines. Available in disc-mount and standard models, with a 42 mm bearing and 100-mm bearing-bearing spacing.

KH 2023 range

This update has been long awaited and other than the new hub and cranks, the new range will be familiar to everyone with it's emphasis on quality and riding experience. The only other things of note is that the unicycles come fitted with 203 rotors as standard and that the 36" in mainland Europe will be supplied with the King George tyre and a QuAx rim rather than the Dominator 2.



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