I have added a tool category to my web site, stridacanada.ca/?product_cat=strida-tools
it includes my new EVO Lock Ring Tool. If you want to adjust or change the belt on your EVO then you need to loosen the large 95mm lock ring that secures the KS3 gear box into the EVO’s bottom bracket. This custom tool is designed to fit the 6 notches in the lock ring.
Regards, Bill Wilby