Tarmo4 replacement bumper

A multipart bumper for the Tarmo4 1/10th RC car. Attempting to make a bumper that will survive an impact. For better survive-ability, print the mount and the grille out of something like carbon fibre or nylon or similar. I don't have a hardened nozzle, so I'm making do with PLA and seeing if I can design something to survive a minor impact. Expect the grille part to break any serious crash (still working on that bit),

When mounting, use separate bolts for mounting the middle flex to the mount and the grille to the flex. Requires 3 M4x15 to mount the flex (hex head), and 3 M4x20 to mount the grille (socket head)

Feel free to play with the design if you like -- I've included the STEP files.