I definitely recommend this gym. They have so many programs and the coaches are sincere and truly…read morecare about the well-being of their students. Both kids teens and adults will learn real self-defense.

Sway is friendly and very knowledgeable! When I first started my technique was definitely lacking…read moreand he has helped me improve so much. It's really cool to see every level training in his gym. From super newbies. To members who are in fight leagues. Taking his Krav Maga classes have really helped open my eyes to how crucial learning self defense is. I would recommend to every one! The techniques are so practical but yet so fierce. His gym is also clean and sanitized daily

This location is owned by the same owners as GB Upland. If your goal is just to do jiu-jitsu for…read morefitness, this school may work fine. The main issue is the curriculum. It's very basic, standardized, and repeated year-round. This appears intentional. Regular classes teach only the minimum, while techniques outside the posted curriculum are pushed into paid private lessons. Because of this, most students are trained as hobbyists. Extra instruction or advanced opportunities often depend on personal relationships rather than a structured development path. The curriculum is designed for retention, not depth, and this model is consistent across Gracie Barra schools. The gap becomes clear when students compete or train outside the Gracie Barra environment. While internal GB tournaments create an even playing field, they can give a false sense of progress. When students compete outside of GB or train at another academy against the same rank the difference in technical depth, adaptability, and exposure is often very noticeable. Even the instructors don't train the same curriculum as regular students, which speaks to how limited it is. Compared to other academies that teach more as part of regular training (without extra fees), this approach leaves students less prepared overall.

*BUYER BEWARE* be ready to pay double if you cancel!!!…read more You have to remember one thing, even though this is about your "kids" this is really a business and never forget that they are here to make money at the end of the day. My wife and I are coming into some financial issues and we asked for a cancellation, I came in person to cancel they told us that we had to email in order to do a cancellation before our next billing cycle when I asked for a cancellation in person. The response we got we have to wait 60 days two months in order to cancel our membership. That doesn't sound reasonable at all not even apartments make you wait that long. "Fair" business practices is no more than 30 days notice? But 60?!? That's a money grab and a shady business practice in my opinion. Originally I wanted to put us on hold for a few months but now I know we will never be back again. It's all about the principal. At the end of the day again it's a business and they're here to make money, not change lives. MONEY IS KING!!!!! I would highly reconsider taking your child or anyone you know elsewhere my biggest regret is signing up with them in the first place. Shame on you for shady business practices!

I am a newer member to Javi's gym (November, 2019), but not to jiujitsu or martial arts. I have had…read morethe privilege to learn and train under world class instructors, which is the reason I sought out Javi in the first place, as his lineage, fighting experience, personality, and teaching style, exhibit the marks of such instruction. His brand of "Strike-Based" Jiujitsu, by name alone drew me to seek him out over all other jiujitsu schools in the Inland Empire, as it emphasizes that jiujitsu is first and formost a Self-Defense art. With respect to his academy, I am pleased that there is a respectful attitude amongst his students exhibited to eachother and extended to new sign-ups like myself, there are virtually no ego's displayed or felt during live rolls, and the mats and facilities are up kept and cleaned daily. I am excited to see how my growth in jiujitsu under Javi's instruction will blossom, and although I am relatively still new to his academy, based on what I have experienced and observed thus far, I recommend his academy to anyone looking to learn, develope, and expand their knowledge of Self-Defense offered through his jiujitsu instruction.

Been training here for a month now and love it. Professor Javier is a great instructor and the…read moretraining is practical and relevant for self defense and sports BJJ. The BJJ instruction ties in well with striking and teaches you how to apply BJJ techniques in an environment where punches are being thrown. Everyone here is chill and it has a great vibe. Would definitely recommend.

I have been coming here for 7 months. Adult instruction is on point with an emphasis on technique…read moreand safety. Great for a 40 year old man trying to learn. Enrolled my toddler 2 months ago, and it is great for her. The instruct emphasizes on listening and discipline, which is exactly what these crazy kids need. In comparison to other jujutsu classes nearby for toddlers, this is the best one because they have many skilled instructors.

this is a great jiu-jitsu academy The coaches are patient, professional, and truly care about the…read morekids. My children have learned discipline, confidence, and respect while still having fun every class. The environment is safe, supportive, and very well organized. It's great to see how much my kids enjoy training here and how much they've improved. I highly recommend this place to any parent looking for a positive and healthy activity for their children. Keep in mind the place is clean & spaces and plenty of parking spaces! Highly recommended!

In May 2022 I received a text from Ren offering a "special" to pay $1200 for a full year of…read moretraining. He assured me Blvck Box was NOT closing! I did pay the $1200 via PayPal...on July 2022 and they closed due to non-payment of rent!! It was obvious the $1200 I paid was not for training and it must have not gone towards as rent as he was already behind in May... I've reached out MANY, MANY times and while Ren does eventually respond, the excuses are many - single dad, evicted from his apartment, living on food stamps, etc. DO NOT PAY IN ADVANCE!!!!

Ren, is the most amazing trainer I have ever had. He is extremely knowledgeable, flexible and down…read moreto earth. He is second to none.

learned so much here training with the coaches and students. amazing place and great programs to…read morelearn or improve striking ans grappling

Been there now for 3 yrs and planning on continuing! We love all the coaches there! There's another…read morelocation in Chino, Ca with great coaches as well! 1 membership fee for both locations!!!!

Great Coaches, great people, I strongly recommend it to anyone and everyone, either you any to be a…read morefighter or you are simply fik got for fitness, or self defense, you came to the right place!

Michelle and mike wonderful people I love them very helpful and respectful much love guysread more

Kru Rob was so wonderful for my first class here. The space is a gorgeous, big open space and other…read morestudents were so friendly and kind to me. I wish I lived closer so I could come here everyday.

First time visiting for a seminar with the Muay Thai kickboxing legend Saenchai. The owner was very…read morepolite and told us to make ourselves at home. This is a very clean facility with great equipment and fun environment.

We have been interested in jiu-jitsu for quite some time but I don't know where to start. Asked a…read morefriend if she knew of any place and she immediately sent me the link for KCA. I called and Charlie got us classes that worked perfectly for my kids and invited us to come for a free class that same day. We came and we were instantly sold. We enrolled in the young samurai class and the little dragon. Our charter school funds can be used and they offer midday clssses for homeschooled families! We are so pleased so far! Charlie is great with the kids, they are smiling and engaged and he is great at getting them excited to learn and follow directions. He is great at remembering names too, all the kids are really receptive to his teaching style!

Awesome place, Charlie is great, he is patience, understanding and just an all around a good…read moreperson. His wife is equally just as awesome. Unfortunately we weren't able to continue training but would recommend KCA to anyone wanting to train in these arts. Thank you for your patience

My son struggles with confidence and was nervous to be a beginner and Paul made him feel so…read morewelcome, I love the approach here with private lessons and group classes being optional and a kid may need to ease their way into feeling confident enough to do group classes. My son is so excited to go to class every week, this has been a game changer for him. Would definitely recommend this studio!

The teachers are focused on the pupils and hone in the skill sets that are individual specific…read more There is true passion that drives this business and they make sure the students not only feel encouraged and confident during their lesson but have fun learning. Would highly recommend.