2D DDC Front Suspension Sensor Kit
I purchased the 2D DDC Front Suspension Sensor Kit from Alpha Racing in 2016, but never installed it.
It seems the kit is for riding on the race track, rather than on the street. The kit requires the installation of steering stops that restrict the bike's turning radius, and prevents locking the forks. On the track, it's not a problem. But in the city, a tight turning radius and fork locking are important.