• Give your child the gift of confidence, leadership, respect, focus & discipline with our Kids Martial Arts classes. 

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  • Our Small Samurai Class (for children ages 3-5) introduces the children to karate basics in a fun environment.

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  • Our Adult Karate and Self-Defense class blends the fantastic benefits of traditional Japanese karate with the self-protection skills needed for the street.

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  • Get a great workout and learn self-defense with our kickboxing classes!

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  • WE HAVE MOVED! Our new location is 1180 W. Ash Street #100, Windsor, behind Taco Bell! Check out our awesome Karate Classes Trial Offer: Get at T-Shirt and 4 Classes for $49 -- register on the home page of our website!


      Welcome to Kaizen Karate & Self-Defense in Windsor, CO! We offer Karate classes for children ages 3 and up, women's self-defense classes, women's kickboxing classes, and private lessons for Karate and self-defense -- including private group self-defense classes and company team-building classes. We specialize in self-protection for adults and children. Our traditional Japanese karate curriculum offers your child many fantastic benefits, including discipline, focus, and self-confidence. 

      Why choose us? Our teaching method combines the discipline and practical self-defense applications of traditional Japanese Karate with the "I Refuse to be a Victim" mentality for the street. We specialize in self-protection for both adults and children -- including anti-bullying, verbal self-defense, "stranger danger" and more. We are also proud members of the Colorado Karate Association (CKA), and students who choose to compete can attend multiple CKA tournaments throughout the year. We've produced four CKA State Champions in three years! 

      Register here for your Karate Trial: Get a T-Shirt and four classes for $49! You'll be taken to PayPal's secure site to complete your registration. 

      Trial Offer

      Upon registering, within 24 hours we'll email you a confirmation where you'll select which classes (Small Samurai, Kids Class, or Adult Class) you'll be attending for your trial and your T-Shirt size.

      You can start right your trial right away, or use it later! Please note, however, once you start your trial, you have 30 days to attend your four classes. Come once a week for four weeks, or twice a week for two weeks, up to you! Questions? Call us at 970-217-0501 or email at novictimpledge@gmail.com!

      All sales are final. Kaizen Karate & Self-Defense does not give credit and/or refunds for classes missed due to holiday, vacation, illness, weather, etc. Payment for all classes (including, but not limited to, karate & self-defense classes, women's self-defense classes, private lessons, summer camp classes) is required prior to attending the class.  Thank you for your business!