In Wrath of the Lich King it is item level 232, requires level 80 and is named Windrunner's Legguards. In MoP Classic it is item level 245 and requires level 80.
Read from the World of Warcraft client build files (JournalEncounterItem, JournalEncounterCreature, Achievement) and the Blizzard Game Data quest API.
How Windrunner's Legguards of Triumph Compares
Who It Suits
Mail is the armor type Evoker, Hunter and Shaman wear. With Agility or Intellect, Windrunner's Legguards of Triumph suits Beast Mastery, Marksmanship and Survival Hunter; Elemental, Enhancement and Restoration Shaman; Devastation, Preservation and Augmentation Evoker.
Transmog Sets
Windrunner's Legguards of Triumph is part of the transmog set Windrunner's Pursuit (Hunter only). The other 16 pieces:
Built from the World of Warcraft client build files and recorded Auction House snapshots.
Where Windrunner's Legguards of Triumph Fits
Other Items Named Windrunner's Legguards of Triumph
3 other items in the current build are also called Windrunner's Legguards of Triumph. Same-name entries are usually a different rank, faction, quest stage or reward track of the same object.
Items Numbered Next to Windrunner's Legguards of Triumph
Blizzard numbers items as they are created, so the named items next to ID 48271 (48266 to 48276) were usually added in the same batch as Windrunner's Legguards of Triumph: the same quest line, zone, vendor or reward set.