HomeCaliforniaFountain Valley › Ace Jiu Jitsu LLC

Ace Jiu Jitsu LLC

4.7 ★★★★★ 23 Google reviews · Muay thai gym in Fountain Valley, California

Muay Thai gym Kids & teens

Plan your first class

  • Kids & youth classes kids and youth muay thai classes — built around discipline, focus, and confidence
  • Today see hours ·
  • Website & schedule acejiujitsu.com — book classes and see the live schedule
  • Phone +1 714-334-3878

Hours

Monday 10 am–8 pm
Tuesday 10 am–8 pm
Wednesday 10 am–8 pm
Thursday 10 am–8 pm
Friday 10 am–8 pm
Saturday 2–5 pm
Sunday Closed

Hours shift for holidays, seminars, and open-gym times — worth a quick check before a special trip.

The classes they run

Muay thai classes on the schedule at Ace Jiu Jitsu LLC, confirmed in members' own reviews and the gym's own info — not guessed from the sign out front.

🧒 Kids Muay Thai 7 mentions

“I can't recommend Ace highly enough, my wife and I love it and so do our kids!”

All gyms that run kids muay thai →

🛡️ Self-Defense

“I am a student at ace and I have learned so much confidence, self defense and offense.”

All gyms that run self-defense →

Other martial arts here

Muay thai gyms are usually multi-discipline. Here's what else members mention training under the same roof at Ace Jiu Jitsu LLC — mined from their reviews and the gym's own info.

🦵 Kickboxing

“They’re not only teach the kids jiu-jitsu & kick boxing but also behavior.”

Other gyms that also teach kickboxing →

🥊 Boxing

“They’re not only teach the kids jiu-jitsu & kick boxing but also behavior.”

Other gyms that also teach boxing →

🥋 Brazilian Jiu-Jitsu (BJJ) 9 mentions

“The mats are new and the head instructor Tim offers in depth explanations for people interested in learning grappling.”

Other gyms that also teach brazilian jiu-jitsu (bjj) →

Disciplines are mined from reviews and the gym's own info — they show what members have trained, not a formal class guarantee. If you specifically want BJJ, boxing, or MMA alongside muay thai, confirm the current schedule with the gym.

What members say

The things reviewers bring up again and again across 23 Google reviews — in their own words.

🧑‍🏫 expert, authentic coaching 3 mentions

“Awesome coaches and a great place for the kids to learn Jiu Jitsu.”

🤝 no-ego, friendly gym 7 mentions

“Our entire family has started training there and I've been blown away at how receptive the instructors and other students are.”

📘 real technique & fundamentals 2 mentions

“Even more impressive is the attention to detail given to help you learn Jiu Jitsu properly.”

🧠 builds confidence & discipline 2 mentions

“They have gained confidence and physical strength under the direction of caring instruction.”

From the reviews

I have trained here many times during my period in the US. The teacher "Cartmell" is one of the best Ju-Jitsu coaches I have ever met. All his entire team is really friendly and well trained; even if the school is not an huge place, it is a cozy place where you can feel yourself at ease, and the school is very great.

★★★★★ — Gregorio, Jun 2018

I love Ace. I’m not close enough in proximity to be one of their students FT but I stop in once in a while. I belong to one of their affiliated schools. They have a great crew. Master Tim Cartmell shows you technique over strength.

★★★★★ — Joann, Feb 2019

Our kids are learning great defense strategies. They have gained confidence and physical strength under the direction of caring instruction. Class atmosphere is warm and friendly with positive encouragement. ACE offers adult classes too, which our extended family rave about.

★★★★★ — Tanya, Feb 2019

Tim Cartmell is the best martial arts coach I've had the pleasure of meeting and training with . I have gone across the country to find the best and after many years, have found my new teacher .Highly recommended !

★★★★★ — Tim, Nov 2018

Excerpts from public Google reviews. Read all 23 reviews →

Your first muay thai class at Ace Jiu Jitsu LLC

Nervous about walking into a muay thai gym for the first time? Almost everyone is, and good coaches expect beginners to come through the door. Here's what to know. What to expect: a typical first class is a warm-up, then drilling the basics on pads and bags — not fighting. Rest whenever you need to; no one will bat an eye. What to wear: shorts or athletic wear and a t-shirt; you'll train barefoot on the mats. What to bring: water and hand wraps if you have them — many gyms lend gloves for a first class, so it's worth asking when you call. As you keep training you'll add your own gloves, wraps, a mouthguard, and shin guards. Sparring is optional and comes later, once your fundamentals are solid. Arrive 10–15 minutes early to sign a waiver and meet the coach. It gets easier fast — most people feel far more at home by their third class.

Muay thai is a contact sport. Ease in, listen to your coaches, and if you have any injuries or health concerns, mention them before class and check with a doctor if you're unsure.

Where to find Ace Jiu Jitsu LLC

18792 Brookhurst St, Fountain Valley, CA92708

Get directions Instagram · Facebook

More muay thai gyms near Fountain Valley

Spider Muay Thai

4.4 ★★★★☆ 24 reviews

10725 Ellis Ave Ste H, Fountain Valley, CA

🥊 Free trial class — check their site

Muay Thai gym Free trial Beginners welcome Kids & teens Fight team Authentic Thai expert, authentic coachingwelcoming to beginnersno-ego, friendly gym

under a mile away

Rounders MMA HB

4.9 ★★★★★ 25 reviews

10116 Adams Ave, Huntington Beach, CA

🥊 Free trial class — check their site

Muay Thai gym Free trial Beginners welcome Kids & teens Fitness Fight team expert, authentic coachingwelcoming to beginnersno-ego, friendly gym

1.3 miles away

Classic Fight Team

4.9 ★★★★★ 39 reviews

16919 Bushard St, Fountain Valley, CA

🥊 Free trial class — check their site

Muay Thai gym Free trial Beginners welcome Kids & teens Fitness Fight team Authentic Thai expert, authentic coachingwelcoming to beginnersno-ego, friendly gym

2.0 miles away

All muay thai gyms in Fountain Valley, CA →

Listing verified July 2026 from public business records and member reviews. Something out of date? Report a correction. Own this gym? Claim your listing — it's free.