World ChampionsTrain Here.
SuperBad Boxing Gym is Detroit's home for championship boxing and serious fitness — built by world champion Tony Harrison and head coach L.J. Harrison. Real purpose. Real results. All ages, all levels.
A Gym Built On Legacy
Boxing runs in the Harrison blood — three generations of fighters and trainers. What started as a promise has grown into a Detroit powerhouse where youth become national champions and pros sharpen their craft.
From first-time members to world-class athletes, everyone trains under the same roof and the same standard: discipline, respect, and relentless work.
Train Your Way
Whether you want to compete, get in the best shape of your life, or give your kid a positive outlet — there's a place for you in the gym.
Youth Boxing
Building champions and character. Our youth program has produced 11+ national champions while keeping kids focused, fit, and inspired.
Adult & Fitness
High-energy boxing fitness classes and skills training for every level. Burn, build, and learn the sweet science — no experience required.
Competitive Team
Elite coaching for amateurs and pros. The same program that trains college athletes, NFL players and world champions.
Detroit Boxing, On The Marquee
Our fighters and our city show up on the sport's biggest cards — from training camp to Little Caesars Arena.
Built By Champions
This isn't a fitness fad. SuperBad is led by a world champion and a master coach — and the results speak for themselves.
Tony Harrison
Former WBC world champion repping Detroit on boxing's biggest stages, including a celebrated return at Little Caesars Arena.
L.J. Harrison
Head coach and teacher of the "sweet science" — he's turned every traveling fighter in the gym into a nationally ranked athlete.
National Champions
Homegrown youth fighters crowned the best in the country — with hundreds of new kids every month.
Support The Expansion
We're growing fast — hundreds of new kids every month. Help us expand the facility with updated equipment, a bigger weight room, and more space for the next generation of champions.
Train Like A Champion
Walk in a beginner. Train like a champion. Lock in your membership or book a consultation today.
