product description
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.
The Boundary hub uses the Q-Axle micro spline, which has a larger (24mm) diameter compared to the ISIS-type 22mm, enabling high strength at 33% lower weight than the KH Moment and 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.
The 42 mm bearing and 100-mm bearing-bearing spacing is compatible with all ISIS-ready frames.
Should you want to build the wheel, here is a link to the spoke calculator so you can find the correct spoke length you need.
Features:
• Splined Drive interface
• Unicycle Bearings - ISIS 42mm
• Bearing pitch of 100mm (Industry standard)
• Spoke Holes: 36
• Weight: 389g (420g including bearings)
Hub Detail:
- Please see our spoke calculator for this information
Note: This hub utilizes 42mm bearings, and is compatible with 42mm frame/bearing housings only.
