The foot peg on the lever snaps into a holder in the rigid, frame mounted part so it can take the load of the leg/foot. The friction drums are made of stainless steel with a friction plate taken from an Indian Chief:
All the spring and adjusting stuff is covered inside the housing. Final assembly shown below, plates are made of 10mm carbon fiber plate, the pivot is taken from a streetfighter peg:
And on the bike...