A Home for Nampa Jiu Jitsu
Core Jiu Jitsu
Welcome To
Core Jiu Jitsu
Welcome to Core Jiu Jitsu, a family-run Brazilian Jiu Jitsu academy in the heart of downtown Nampa! We welcome all types of learners and are here to teach you the fundamentals in Jiu Jitsu for self-defense and competition. Our family culture focuses on helping students with their fitness, health, confidence, and overall lifestyle. If you’re looking to change your life through BJJ training, we welcome you at Core Jiu Jitsu in Nampa, Idaho!
About Our Academy
Our Mission
At Core Jiu Jitsu, we believe that a coach is more than just a teacher – a coach is someone who sees your potential, meets you where you are, and helps guide you to where you want to be. Through the art of Brazilian Jiu Jitsu, we are committed to developing each individual by unlocking their God-given potential. Our mission is to build confidence, discipline and resilience that will empower individuals to grow both on and off the mats. We don’t just teach jiu jitsu – we coach with a purpose, walking alongside you every step of your journey until you reach your destination. Join us for a special journey through the art of Brazilian Jiu Jitsu!
History
Jayson Kira began his Jiu Jitsu journey at 23 years old, driven by a desire to challenge himself and grow both mentally and physically. Jayson started his journey at Technics Jiu Jitsu under Rylan Lizares (Pedro Sauer Association) through purple belt, then earned his brown belt and finally his black belt from Rexie Barnum at Alliance BJJ Hawaii.
As his experience deepened, so did his passion for teaching. Jayson found purpose in helping others develop solid fundamentals, confidence, and a true understanding of Jiu Jitsu’s principles both on and off the mats. That passion has now evolved into his dream — opening his own Jiu Jitsu academy, where he can share his knowledge and build a strong, family-centered community.
Born and raised in Hawaii, Jayson and his wife, Sheri, share a love for Jiu Jitsu that has become a family tradition. Their two daughters, Bailee and Lilah, also train and embrace the same values of discipline, respect, and resilience. Recently, the Kira family relocated to Nampa Idaho to begin a new chapter — bringing with them the spirit of aloha and their commitment to spreading the art of Jiu Jitsu in their new community.
Our Jiu Jitsu
Instructors
Jayson Kira
Core Jiu Jitsu is led by the experience and passion of Brazilian Jiu Jitsu from owner Jayson Kira. He, alongside his wife, Sheri, and his two daughters, Bailee and Lilah, have embraced the art and want to help others with it. They are bringing the spirit of Aloha with them from Hawaii and plan to build up the Nampa Jiu Jitsu community one person at a time.
Find Your Perfect Class Time
Whether you’re new to Jiu Jitsu or ready to level up your skills, there’s a spot waiting for you on the mats.
Check out our schedule and choose a class that fits your routine.
Got questions? Feel free to text us at (833)846-2980 and we will get back to you as soon as we can!
Explore Our Jiu Jitsu Programs
At Core Jiu Jitsu, we believe Jiu Jitsu is for everyone — kids, teens, and adults alike. Each of our programs is designed to meet students where they are, helping them build confidence, discipline, and strength both on and off the mats. Whether your goal is self-defense, fitness, competition, or personal growth, our family-friendly environment ensures every student feels supported, challenged, and part of our community.
Our Keiki (children’s) BJJ program introduces little ones to the foundations of Jiu Jitsu in a fun, safe, and positive environment. Classes focus on movement, balance, coordination, and teamwork — all while teaching respect, discipline, and confidence. Through games and age-appropriate drills, kids build focus, learn to listen, and develop a love for learning on and off the mats.
Our Juniors BJJ program helps students grow both mentally and physically through structured training, teamwork, and discipline. Kids learn practical self-defense skills, problem-solving, and how to use technique instead of strength. Each class is designed to build confidence, resilience, and respect — all while having fun in a supportive community.
Our Adult BJJ program dives into the art of technique, leverage, and strategy. Whether you’re training for fitness, self-defense, or competition, you’ll build a strong foundation through drills, situational training, and live rolling. Each session challenges you to improve both physically and mentally, developing confidence, discipline, and a calm mindset that extends beyond the mats.
Ready to roll?
Find a class that fits your schedule and come experience what makes Core Jiu Jitsu one of Nampa’s most family-friendly academies.
Try your first class free — no experience needed!
Schedule a Tour!
We are proud to provide Jiu Jitsu to those in Nampa, as well as those in Meridian and Caldwell. You can find us in the heart of downtown Nampa right across from Wells Fargo and a block from the Nampa Public Library! Special Pricing for Law Enforcement, Military, and Veterans.