Stating in 5.0 (and reworked in 5.1), gearing in SWTOR may not be as simple as you once may have remembered it. In order to acquire gear with setbonuses, there are a few steps one must take. First, you must either acquire Unassembled Gear via Operations (all modes) or from Unassembled Components, which are acquired from Warzones, Arenas, and Galactic Starfighter.
Once you have an Unassembled Gear piece, you will need to trade that piece (as well as Command Tokens, received from opening CXP crates) to a vendor to finally receive your specific piece of setbonus gear. There are three tiers of gear. To progress to the next tier of gear, you will need to trade in the previous tier's Unassembled Gear piece and Command Tokens. For example, you only need to spend Command Tokens for Tier I gear. Tier Gear II required a Tier I Unassembled Piece and Command Tokens. A Tier III piece requires a Tier II Unassembled Piece and Command Tokens.
Check out our Command Experience Tracker!