The Mini Tricopter was designed to utilise parts from the Tricopter V3. It uses the same Naze and PDB, servo, tilt mechanism, motor mounts, front spacer and arms (cut to half length). Which means that you can convert your regular size Tricopter to a Mini Tricopter simply by cutting the arms (or getting new pre-cut ones) and screwing on this conversion kit. (Warning: cutting carbon fiber is dangerous and may harm your health. Use proper protection if you try it.) Also, don’t forget to downsize the electronics accordingly.
This add-on kit can also be added onto the regular size Tricopter for extra protection and more places to mount gear. Also makes the copter look really cool.