Beyond cannibalizing another engine I'm not sure you are going to find a source of them. Replacement parts wise TakaraTomy only sells couplers and rubbers as far as I know, the rods themselves are not made in a user serviceable way as ucwepn's own videos show.
![[Image: gRR83EM.png]](http://i.imgur.com/gRR83EM.png)