RadioFlyer
Right2Repair
Apparently BMW has patented a design for a shiftcam single. Perhaps a revised 310 or the rumoured 420.
https://canadamotoguide.com/2023/02/27/patent-drawing-hints-at-new-bmw-single/
https://canadamotoguide.com/2023/02/27/patent-drawing-hints-at-new-bmw-single/