It's not going to be cheap though, the BDK tails are carbon

I made my own subframe for the track bike. Weighed about 2lb all in. Fitted the race seat unit on and moved the ecu ontop of an undertray I made. Though you'd be hard pressed to fit lights to it! :)

I have a few BDK bits and bobs and I know there no cheap I like there carbon units but I don't like how the TZ looking one goes down the side of the frame