"Reinforcing the gauntlets of all Tiger Claws increases their hitpoints."—In-game description
Reinforced Gauntlets is a technology in Age of Empires III: The Asian Dynasties that can be researched at a Trading Post built on a Bhakti Temple settlement. Once researched, it increases the hit points of Tiger Claw by 50%.
Even with Reinforced Gauntlets, Tiger Claws are far from the best native units.