The most reasonably priced component used on the Lt-z400 Quad Sport 2012 (l2) Usa (e03) Quadsport Quad-sport Frame (lt-z400zl2) is the Bolt.
Some items from this specific schematic: Bolt(10x30), Plate,battery, Bolt(6x20), Rail,seat(silver).
With a quantity of four pieces, the Bolt is the most used part in the FRAME (LT-Z400ZL2) diagram.