The mirror mount attaches to either front wheel kingpin and works perfectly with the Mirrycle mirror #37205. Many riders have a mirror mounted on each side of their trike. This is also the mounting point for Greenspeed fenders.
In both of the above applications two mounts are required for fender installation.
20" wheels Series II kingpins (non-threaded) fit GTR, GTO, GTT, GT II Series and Magnum models.