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Fortify Fight Club
5 ★★★★★ 143 Google reviews · Kickboxing gym in Sun City, Arizona
Plan your first class
- Free trial or intro class most gyms welcome new members with a free trial or intro class — check their site or give them a call to book your first session
- Beginner-friendly all fitness levels welcome, including total beginners — no experience needed, and you get in shape by training, not before
- Kids & teen classes kids and teen kickboxing classes (ages 5–13) — built around confidence, focus, and fun
- Sparring sparring and partner work for members who want it — always optional, eased in gradually, with the coach controlling the contact
- Competition team a competition team for members who want to test themselves in the ring — amateur kickboxing, muay thai, or K-1
- Today see hours ·
- Website & schedule fortifyfightaz.com — book classes and see the live schedule
- Phone (623) 680-3603
Hours
| Monday | 11 AM–12 PM, 4–8 PM |
| Tuesday | 4–9 PM |
| Wednesday | 11 AM–12 PM, 4–8 PM |
| Thursday | 4–9 PM |
| Friday | 10 AM–12 PM, 5:30–8 PM |
| Saturday | 10 AM–3:30 PM |
| Sunday | Closed |
The classes they run
“My kids have been training at Fortify Fight Club since they opened and I cannot recommend it enough.”
“The pad workout class is perfect for beginners learning how to even throw a punch, practicing combos, and if you put in the effort, it can be a very intense work out.”
“Coach silas leads the kickboxing fight team and has taught me the skills and character it takes to grow on the mat as well as outside the gym!”
“I've always been on the fence when it came to being serious about boxing but as soon as I stepped into the gym it was all good vibes!”
Other martial arts here
“I've always been on the fence when it came to being serious about boxing but as soon as I stepped into the gym it was all good vibes!”
“If you are looking for a great place to train and learn mixed martial arts it doesn’t matter if you are a beginner or advanced student.”
“They offer adult and kids classes, boxing, kickboxing, MMA, wrestling, BJJ and more, give it a try you won’t be disappointed!”
“He gears his classes towards self-defense practical application and competition as well as fitness.”
What members say
“Coach Silaz Diaz is an excellent coach and his classes are all excellent I’ve learned so much in such a small amount of time and he’s a great person overall.”
“The pad workout class is perfect for beginners learning how to even throw a punch, practicing combos, and if you put in the effort, it can be a very intense work out.”
“Every class they are learning something new, getting hands on experience and having so much fun.”
“Coach silas leads the kickboxing fight team and has taught me the skills and character it takes to grow on the mat as well as outside the gym!”
“The gym is well-equipped with everything you need, from a full-size ring to a wide array of bags and training equipment, all meticulously maintained.”
“Not only has he helped my son build stronger skills and technique, but Coach Silas also boosted his confidence and discipline in ways that go far beyond training.”
From the reviews
Started kick boxing in November 2025 under Coach Silas. I’ve learned a lot these past few months and am stepping into the ring for my first KB fight this Friday with Silas in my corner
Coach Silaz Diaz is an excellent coach and his classes are all excellent I’ve learned so much in such a small amount of time and he’s a great person overall.
Fortify Fight Club is the best gym experience I have ever had. I had a big trip planned that I knew I wasn't in shape enough for and needed something that could really push me. I was also curious about trying boxing as I had no prior experience.
Coach Silaz is an excellent coach. He taught me very well so far and he’s a great person to be around and he is very disciplined in his martial art. (K1)
New to kickboxing? Start at Fortify Fight Club
Fortify Fight Club comes up as a beginner-friendly gym — noted on their own site. If you've never thrown a punch or a kick, that's exactly who a good beginners class is for. A few things worth knowing before your first week. First, you don't need to be fit or coordinated to start — you get in shape by training, not before it, and coaches scale every drill to you. Second, you won't be thrown into hard sparring — reputable gyms build the basics (stance, footwork, and punches and kicks on pads and bags) first, and any contact eases in gradually under a coach's control. Third, all fitness levels really are welcome — ask about a dedicated beginners or fundamentals class time so your first session is alongside others who are also starting out. Most gyms are happy to let you watch or try a class first, so reach out before you commit.
Your first kickboxing class at Fortify Fight Club
Nervous about walking into a kickboxing 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 — stance, footwork, and punches and kicks on pads or a heavy bag — not hard sparring. Go at your own pace and rest whenever you need to; no one will bat an eye. What to wear: comfortable athletic clothes you can move and sweat in, and supportive trainers. What to bring: water, and hand wraps and gloves if you have them — many gyms lend loaner gloves for a first class, so it's worth asking when you call. As you keep training you'll add your own gloves and wraps (and shin guards once you start sparring). Sparring is optional and eases in gradually, once your basics 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.
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