WELCOME
Cai Jiu-Jitsu Academy is a private family-run martial arts organization dedicated to teaching Kosen Judo and BJJ with heavy emphasis on ground work (ne-waza). At our gym, we take pride in creating a safe and welcoming environment for individuals of all ages, experience levels, and body types. Our academy offers training in traditional Kosen Judo and Brazilian Jiu-Jitsu, both renowned for their effectiveness and safety in self-defense. We take pride in being one of the few dojos in Orange County to utilize advanced spring-loaded mat technology, which provides superior shock absorption and ensures exceptional safety and support during throws, falls, and rolls. We are also the only Kosen Judo Training Center in Orange County for Kids and Teens. Our students have the opportunity to participate in local competitions for Brazilian Jiu-Jitsu and our in-house annual tournaments for Kosen Judo throughout the year.
After School Program! Ages 4+
After School Program! Ages 4+
No Contract, No Annual Fees!
OUR PROGRAMS
Explore our programs specifically designed to suit you and your needs.
OUR TRAINING GEAR
Take a tour of our gym’s merchandise and training gear meant for style and functionality.
Two young boys practicing Brazilian Jiu-Jitsu, wearing gis, smiling and laughing while grappling on mats in a martial arts class.
Kids class practicing guard escape.
Teens class @ 6:00 pm.
Kids class sitting by the wall waiting for spar practice.
Kids class practicing strength training skills.
Children sitting on a martial arts mat in a dojo, wearing judo gis, listening to an instructor at the center of the room, with some in white gis and others in blue gis, one with an embroidered patch on the back.
Our bravest and brightest female students in our teens class @ 6 pm.
Two martial artists engaged in Brazilian jiu-jitsu on a competition mat, with one person in a blue gi on the ground in a submission hold and the other person in black gi applying a choke. Spectators and judges watch from behind, with some recording the match on their phones.
Bjj class with children practicing Brazilian Jiu-Jitsu on mats, one instructor in a white gi applying a choke on another instructor in a black gi, while other children observe.
Referee standing on a martial arts competition mat, raising a competitor's hand in victory. The competitor is wearing a white gi with a lion logo on the back, and the referee is in a red shirt with 'REFEREE' written on it. Another competitor in a black gi stands nearby. Spectators are seated on bleachers in the background at an indoor sports arena.
Two female martial artists competing in Brazilian Jiu-Jitsu, with one applying a grappling move on the other on a mat.
A person in a white martial arts gi, with black emblem, is practicing a martial arts move on a white mat, supporting their body with their hand, with their head down and hair covering their face.
Two women in Brazilian Jiu-Jitsu gis practicing groundwork on a white mat. One woman is on her knees, and the other is on her back. There are banners and social media logos in the background.
A man wearing a white judo gi with a black belt and a Star Wars Stormtrooper patch on the left chest stands in front of a blue and orange banner at a jiu-jitsu competition. The banner reads "Orange County Winter International Open 2026" and has various logos, including IBJJF, Jiu-Jitsu Con, and sponsors.
Two martial artists, a referee, and an official, are standing on a blue and yellow mat in an indoor competition, with spectators in the background.
Two martial artists in gi uniforms practicing Brazilian Jiu-Jitsu on a mat, with one person in a white gi on the ground and the other in a blue gi standing over them, in a competitive setting with an audience in the background.
Two men standing together in a gymnasium, one wearing a black T-shirt and the other in a blue judo gi with a medal, with people and banners in the background.
Brazilian Jiu-Jitsu class in session with an instructor demonstrating a technique with a young student on the mat, with children sitting against the wall observing.
A group of six people standing together at a martial arts event inside a gymnasium with spectators in the background. Some are wearing martial arts uniforms, others in casual outfit, and one person is wearing a black tank top with a white belt. The gym has a large sign reading 'WOLFPACK' on the back wall. The participants are smiling and posing for the photo.
Two young girls practicing Brazilian jiu-jitsu on a gray mat, engaged in a grappling technique, wearing traditional gi uniforms.
Two children practicing Brazilian Jiu-Jitsu on gray mats, with one in a white gi and the other in a blue gi.
Kosen Judo class with children in white uniforms, two children practicing a shoulder throw with the instructor in black uniform during a demonstration or training session.
Kids in white gis receiving an award from a coach during a martial arts ceremony in a dojo with a GFT logo on the wall.
Kids in gis practicing Kosen Judo with instructor in a dojo classroom setting.
Two children in white jiu-jitsu uniforms practicing a shoulder throw with an instructor kneeling in a black gi, inside a martial arts dojo with a logo on the wall.
Two young men in Brazilian Jiu-Jitsu gis sitting on a mat listening to instruction, one in white and the other in blue, with patches indicating their affiliation.
The kids class and their newly earned stripe promotions, which are in between belt promotions
The teenagers demonstrating an "Uchi Mata", also known as the "Inner-Thigh Reaping Throw"
Two children practicing Brazilian Jiu-Jitsu, one boy in a white gi on the ground, and another boy in a white gi on top, gripping his opponent's arm.
Two young jiu-jitsu competitors in white gis facing each other on a jiu-jitsu mat, with an audience watching from bleachers in a gymnasium.
A young man wearing a white Brazilian jiu-jitsu gi with brown belt standing in a training facility with mats and other practitioners in the background.
Two individuals competing in a Judo tournament, with a crowd of spectators seated in bleachers in the background.
Two competitors in traditional Judo gi uniforms grappling on a mats at a tournament, with spectators in the background.
A martial arts competition with two young boys in white Judo gi uniforms engaged in a judo match on a red mat, while spectators and judges watch from behind a table.
Two children competing in a judo match on a red mat, with one child on top of the other in a grappling position.
A student in a martial arts gi with a medal around his neck, standing beside Sensei Tuan, who is kneeling and holding the medal. They are in front of a banner that reads 'Mojica Judoclub Baldwin Park, CA' with a logo that includes Japanese characters and the words 'Mojica Judo Club.'
Two young boys in white martial arts uniforms practicing judo with Sensei Tuan in a room next to the competition arena.
Two judo athletes in white uniforms engaged in a judo match on tatami mats, with spectators and officials observing in the background.