IronClad Martial Arts Center LLC

IronClad Martial Arts Center LLC



IronClad Martial Arts Center and Power-Up Kickboxing offers classes for kids, teens, and adults starting at 4 years of age to learn the best Martial Arts and Self-Defense in the world. We provide you with a specially designed program fit for your needs. Programs include Muay Thai, Krav Maga, Jiu Jitsu, Grappling, and the Superfoot System.

With over 25 years of experience, our world class instructors will give you the experience of a lifetime in the Martial Arts. Whether you are looking for more confidence, self-defense, to get in better shape, or just want to bring your training to the next level, IronClad Martial Arts can help you and your child better yourselves and reach your goals.


9 employees
8 years in business
Serves Wilmington , MA

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Frequently asked questions

We first start out with 2 free trial classes so we can introduce ourselves and get the student familiar with what they will be learning during their time here at IronClad. 

Martial Artist Kru John Johnston has an extensive history. He began his Martial Arts lifestyle when he was 11 years old. He started in Tang Soo Do under the late Grand Master Richard Byrne and continued this training until he was 18 years of age. During this time he learned how to live the life of a Martial Artist. For the past 14 years, he has trained and taught at the world famous Sityodtong under owner and head trainer Kru Mark DelleGrotte, and the late Kru Eric

Armington. Throughout these years, John trained extensively in Muay Thai, Brazilian Jiu Jitsu, Wrestling, and Boxing. From student, to instructor, to professional MMA fighter, to one of the main trainers for the Sityodtong fight team, Kru John has had years of experience teaching many people the arts. He brings fighters to the highest level in MMA so they can fulfil their dreams in the UFC.


John currently holds a blue belt in Brazilian Jiu Jitsu under Professor Julianno Coutino, Professor Daniel Gracie, and Mike Gresh. In March of 2015 John received his Black Belt under Grand Master Bill “Superfoot” Wallace in the Superfoot Systems, and for the past 12 years has been extensively studying Krav Maga under Sensei Chris Cole and Master Corey Buzzel.


In 2008 John began a journey in competing and fighting in Muay Thai. After only three fights and going 3-0 with 2 knockouts (both in the 1st round). John started his career as a Professional MMA fighter on June 17th, 2011. Since then he has stayed undefeated, going 7-0 in MMA with all 7 fights winning by way of knockout and 6 of them in the first round. John’s last fight was October 14th 2014 at the age of 44. He is currently the undefeated CES Heavyweight Champion and before he retired from his MMA career was ranked the #1 Heavyweight in the region.


Kru John displays a pleasant manner which lends itself perfectly to sharing his knowledge of the Martial Arts with others and effectively teaching many people of all ages, including children. Kru John combines patience with explicit teaching and demonstrates a deep understanding of child development with all age groups. With Kru John at the helm, kids, teens, and adults will have an experience of a lifetime learning the IronClad System of Self-Defense.

Services offered

Mixed Martial Arts