1. Vita VXR 1100
2. Hydrolic platform
3. Rear wheel stand
all found under Decor / Sculptures, all cost 0. You need Fast Lane or a later pack for the Vita VXR 1100 to show in the game. Use the cheat moveobjects on to place items.
Hydrolic platform set (MediaFire)
The workshop 5. Bell MV2 helmet
The workshop 3. 6 tire sets