OS20 is NOT 22″. OS20 is 20″, but BIGGER.
There are two wheel sizes under the 20″ category – the 20″ on Jr/mini bikes uses the 451mm diameter wheel in narrow widths (for 20-1/8″ & 20-3/8″ tires), and the conventional 20″ which uses the smaller 406mm diameter wheel but in wider widths. OS20 is 451mm wheel diameter in widths similar to 406mm wheels.
This fork will accommodate a OS 20” Wheel, as well as a 20 x 1 3/8″ wheel, but the fork is built for a Pro size rider and a OS 20″ Tire.

[one_half][image title=”” align=”right” lightbox=”false” width=”one_half” link=”http://elevnracing.com/products/forks/os20-forks/7-0-lt-pro-os-fork-10mm/”]http://elevnracing.com/wp-content/uploads/2016/09/pro-v2-fork-white.png[/image][fancy_heading style=”style1″ size=”medium”]7.0 LT OS 10mm forks[/fancy_heading][/one_half][one_half_last][image title=”” align=”right” lightbox=”false” width=”one_half” link=”http://elevnracing.com/products/forks/os20-forks/7-0-lt-pro-os-fork-20mm/”]http://elevnracing.com/wp-content/uploads/2014/10/20mm-fork-black.png[/image][fancy_heading style=”style1″ size=”medium”]7.0 LT OS 20mm forks[/fancy_heading][/one_half_last]