Character Boost gear list

When a character is boosted, all gear slots are emptied and filled with new specialization-appropriate ilevel uncommon-quality gear. The previous gear is mailed to the character. These mailed items may include Timeless items that were earlier mailed to the character by other characters on the same account. The boosted character can immediately turn these into epic quality gear, increasing that character's item level even more.

As of patch 6.2.2, the gear lists for the level 90 and level 100 boost are the same, with the only difference being item levels (and thus differently scaled stats).

Gear

 * Level 90 (ilvl 483) / Level 100 (ilvl 640) / Level 110 (ilvl ??) / Level 120 (ilvl 385-390)
 * Heart-Lesion
 * Springrain
 * Trailseeker
 * Mountainsage
 * Mistdancer
 * Sunsoul
 * Communal
 * Lightdrinker
 * Streamtalker
 * Felsoul
 * Oathsworn

Trivia

 * These sets look like the gear shown when choosing a new character's race and class as of Warlords of Draenor, though not during customization, which shows their actual starting gear. Items with this appearance can also be obtained via the Garrison Salvage Yard.