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Welcome to Class One Mixed Martial Arts & CrossFit

We are a full Mixed Martial Arts, CrossFit and Fitness Kickboxing training facility:

Full Mixed Martial Arts Program

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World Class Trainers

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Sign up for a trial week of unlimited classes in our Mixed Martial Arts program  for only $49

We are looking to provide you with a complete Mixed Martial Arts experience with a full range of various striking and grappling arts, combined with CrossFit, a comprehensive strength and conditioning program, from world class fighters and trainers.

Whether your goals are to improve your strength, get faster or just overall wellness, our trainers are here to help you improve yourself through physical exercise. Our trainers are not just competitors in their fields, but class leaders, and champions. Below are some of the programs we currently offer (there will be more to come!):

Mixed Martial Arts (MMA)
Brazilian Jiu-jitsu (BJJ)
K-1/ Glory rules Kickboxing
Muay Thai Kickboxing
Sanda / San shou Kickboxing
CrossFit (Strength & Conditioning)
KickFit (Fitness Kickboxing)

Convenient Location

We are conveniently located in Park Slope Brooklyn at 85  4th Ave. (corner of St.Mark’s Place) near Barclays Center, home of the Brooklyn Nets. We’re are just a few blocks from Atlantic Terminal with the following subway lines servicing the area: 2,3,4,5,D,N,R,B,Q. We are also very close to the following neighborhoods: Fort Greene, Brooklyn Heights, Carroll Gardens, Clinton Hill, DUMBO, Downtown Brooklyn, Boerum Hill.




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For more info please contact us at 718 230 3530 or at