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DiamondHeart Striking and Grappling/PCC

5 ★★★★★ 279 Google reviews · Kickboxing gym in Brooklyn, New York

Kickboxing gym Free trial Beginners welcome Kids & teens Private lessons Competition team

Martial arts–focused gym offering Muay Thai, Brazilian jiu-jitsu & yoga, plus other options.

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 4–12) — built around confidence, focus, and fun
  • Private lessons one-on-one coaching available — a focused way to start or to work around a busy schedule; ask about availability and rates
  • 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 teamdiamondheart.com — book classes and see the live schedule
  • Phone (646) 692-0900

Hours

Monday 7:30 AM–9:30 PM
Tuesday 7:30 AM–9:30 PM
Wednesday 7:30 AM–9:30 PM
Thursday 7:30 AM–9:30 PM
Friday 7:30 AM–8:30 PM
Saturday 9:30 AM–2 PM
Sunday 11 AM–1 PM

Hours shift for holidays and class-schedule changes — worth a quick check before a special trip.

The classes they run

Kickboxing classes on the schedule at DiamondHeart Striking and Grappling/PCC, confirmed in members' own reviews and the gym's own info — not guessed from the sign out front.

💪 Women's Kickboxing

“As a woman, I’ve always felt safe at DiamondHeart.”

All gyms that run women's kickboxing →

🌱 Beginners 8 mentions

“There is also an emphasis on respect as well as community which is always a great thing to find in a gym for experienced people or brand new beginners.”

All gyms that run beginners →

🏆 Competition Team 2 mentions

“I see Gavin and crew at Coaching Clinic events in the US and watch his fighters online as they compete at Top NYC promotions such as Warriors Cup and Freedom Fighters.”

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🦵 Muay Thai 11 mentions

“Started out with Muay Thai and it didn’t take long for me to try out BJJ, boxing, kettlebells and yoga since they have a ton of classes available for everything at all times.”

All gyms that run muay thai →

🥊 Boxing 2 mentions

“Started out with Muay Thai and it didn’t take long for me to try out BJJ, boxing, kettlebells and yoga since they have a ton of classes available for everything at all times.”

All gyms that run boxing →

👤 Private Lessons

“The one-on-one intro session for beginners made a big difference in helping me feel comfortable when I first started.”

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🧒 Kids Kickboxing

“Specifically, we want to recognize Paloma, the coach for the children's grappling class.”

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Other martial arts here

Kickboxing gyms are usually multi-discipline. Here's what else members mention training under the same roof at DiamondHeart Striking and Grappling/PCC — mined from their reviews and the gym's own info.

🦵 Muay Thai 11 mentions

“Started out with Muay Thai and it didn’t take long for me to try out BJJ, boxing, kettlebells and yoga since they have a ton of classes available for everything at all times.”

Other gyms that also teach muay thai →

🥊 Boxing

“Started out with Muay Thai and it didn’t take long for me to try out BJJ, boxing, kettlebells and yoga since they have a ton of classes available for everything at all times.”

Other gyms that also teach boxing →

🏟️ MMA

“I’m especially excited for the new MMA program to start.”

Other gyms that also teach mma →

🥋 Brazilian Jiu-Jitsu 10 mentions

“Started out with Muay Thai and it didn’t take long for me to try out BJJ, boxing, kettlebells and yoga since they have a ton of classes available for everything at all times.”

Other gyms that also teach brazilian jiu-jitsu →

🛡️ Self-Defense

“What include respect, self-defense (what is not just fight but how to get out a hard situation without fight) and they have fun doing this!”

Other gyms that also teach self-defense →

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 muay thai, boxing, or MMA alongside your kickboxing, confirm the current schedule with the gym.

What members say

The things reviewers bring up again and again across 279 Google reviews — in their own words.

🧑‍🏫 expert, motivating coaching 2 mentions

“After just one session I knew that DiamondHeart was a fantastic gym with a great community - it’s a huge space, well organised, and has excellent coaches.”

🌱 welcoming to beginners 16 mentions

“I’d trained Muay Thai at one other gym for a few years, so coming to a new space was a bit daunting but Gavin and the team were extremely friendly and welcoming.”

⚖️ great for weight loss 4 mentions
🏆 active competition / fight team 2 mentions

“I see Gavin and crew at Coaching Clinic events in the US and watch his fighters online as they compete at Top NYC promotions such as Warriors Cup and Freedom Fighters.”

🧼 clean, well-equipped gym 8 mentions

“DiamondHeart is a great gym full of great people and there are a variety of classes for various levels of martial artists.”

💗 welcoming to women 4 mentions

“I felt welcomed from day one—especially by Coach Paloma, who has created such a supportive community for women in BJJ.”

From the reviews

As a fellow gym owner and Muay Thai coach I’m always dropping in and visiting gyms across the US to network, gain ideas and new perspectives on the sport and industry.

★★★★★ — Coach, Jul 2025

DiamondHeart and the culture the owner, Gavin, has cultivated is excellent. I practice Muay Thai, and the individual attention they give each practitioner on and off the mat is superb– special shout-out to coaches Jesse and Diego! But all of his coaches deserve a dab, they’re like the Wu-Tang Clan - pick your style.

★★★★★ — Gamal, May 2026

I recently started going here, and as expected when diving headfirst into a higher volume, new training regimen experienced a tendon issue in my foot. Here is where this gym stands out! I mentioned this issue and the gym gave me a complimentary session with the strength guy, Mark Sayer.

★★★★★ — Ben, Jun 2026

DiamondHeart: Where Enthusiasm Meets Confidence In the month Grace (6) has been training at DiamondHeart, the results in her enthusiasm, confidence, and socialization have been phenomenal.

★★★★★ — Adam, Nov 2025

Excerpts from public Google reviews. Read all 279 reviews →

New to kickboxing? Start at DiamondHeart Striking and Grappling/PCC

DiamondHeart Striking and Grappling/PCC 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.

Check beginner classes on their site

Your first kickboxing class at DiamondHeart Striking and Grappling/PCC

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.

Kickboxing is a contact sport. Warm up, pace yourself, 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 DiamondHeart Striking and Grappling/PCC

67 Ingraham St, Brooklyn, NY11237

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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.