|AXLE SYSTEM||ISIS Drive (International Spline Interface Standard)|
|LENGTH||110/127mm, 117/137mm, 127/150mm, 137/165mm|
|WEIGHT||380g (110/127 mm), 400g (110/137 mm), 430g (127/150 mm), 460g (137/165 mm) per pair|
|OTHER||Sold in pairs|
|OTHER COMPATIBILITY||Kris Holm Spirit Rollo Disks|
CRANK LENGTH: To determine the crank size, measure the distance from the centre of the axle hole to the centre of the pedal hole. The smaller the ratio of the crank length to wheel size the faster the unicycle will travel, the larger the ratio the more control the unicycle will have.
Q-FACTOR: This is the amount a crank bends outwards. Zero means it doesn’t lean outwards at all. The straighter the crank the better for speed, the wider the better for ankle clearance and greater maneuverability.