Welcome to Underground fitness boxing in NYC.

Your new home for fitness boxing in the heart of Williamsburg. Whether you’re here to sharpen your skills, build strength, or find your rhythm, FNT Boxing Club is where the fight begins.

Classes ->

Group workouts for all levels

Memberships ->

Unlimited access to the club

Private Training ->

Custom workouts for peak performance

Stay in the Fight

Download our app to easily schedule classes, track your progress, and stay connected. Your boxing journey, just a tap away.