HomePennsylvaniaDover › Keystone X Fitness & Martial Arts

Keystone X Fitness & Martial Arts

5 ★★★★★ 53 Google reviews · Kickboxing gym in Dover, Pennsylvania

Free trial Kids & teens

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
  • Kids & teen classes kids and teen kickboxing classes — 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
  • Today see hours ·
  • Website & schedule kxfitness.net — book classes and see the live schedule
  • Phone +1 717-781-2202

Hours

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

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 Keystone X Fitness & Martial Arts, confirmed in members' own reviews and the gym's own info — not guessed from the sign out front.

🧒 Kids Kickboxing 13 mentions

“Keystone X Fitness & Martial Arts is an Amazing place to help establish and build a strong foundation of of respect, dedication and integrity for yourself and your children.”

All gyms that run kids kickboxing →

🤜 Sparring

“They offer so much more there including an open gym area, boxing classes and karate classes.”

All gyms that run sparring →

🥊 Boxing 5 mentions

“There’s boxing, kickboxing, MMA, karate, American Fight System (their self defense program), and tai chi.”

All gyms that run boxing →

Other martial arts here

Kickboxing gyms are usually multi-discipline. Here's what else members mention training under the same roof at Keystone X Fitness & Martial Arts — mined from their reviews and the gym's own info.

🥊 Boxing 5 mentions

“There’s boxing, kickboxing, MMA, karate, American Fight System (their self defense program), and tai chi.”

Other gyms that also teach boxing →

🏟️ MMA 3 mentions

“There’s boxing, kickboxing, MMA, karate, American Fight System (their self defense program), and tai chi.”

Other gyms that also teach mma →

🥋 Karate 5 mentions

“My 5 year old daughter has been taking the karate class for 5 months now and has made huge improvements in behavior, discipline, and focus!”

Other gyms that also teach karate →

🛡️ Self-Defense 2 mentions

“There’s boxing, kickboxing, MMA, karate, American Fight System (their self defense program), and tai chi.”

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 53 Google reviews — in their own words.

🧑‍🏫 expert, motivating coaching 3 mentions

“My sons and I take Shotokan at KX and Grandmaster Trimmer is a great instructor!”

🎉 fun, high-energy classes 2 mentions

“Amazing classes for any age and skill level with fantastic trainers/coaches to help push you to improve yourself!”

🧠 builds confidence & relieves stress 2 mentions

“They have given herself confidence and much discipline.”

🤝 friendly, family gym 12 mentions

“Nearly every practice they incorporate a kid friendly activity to give them a brain break from all the discipline- often while helping them grow strong/fast/flexible.”

From the reviews

This is the best karate and mma boxing experience my son has ever had. The instructors are incredible and experienced. The interaction between instructor and pupil are par none and am glad that I enrolled my son for classes.

★★★★★ — Edla, May 2022

I love all the options they have. The workout equipment is accessible 24/7 with a key card. There’s boxing, kickboxing, MMA, karate, American Fight System (their self defense program), and tai chi. I like that I am not limited to one thing. All the coaches are phenomenal and professional. I would definitely recommend.

★★★★★ — Lauren, Jan 2021

The environment at Keystone Xtreme Fitness is judgment free. The instructors are all exceptional and very well versed in what they teach! Tremendous MMA training and self defense classes aswell! Also have helpful and instructive online classes if you are not able to find the time to get out of your house as frequent!

★★★★★ — Brayden, Jan 2021

Keystone X Fitness & Martial Arts is an Amazing place to help establish and build a strong foundation of of respect, dedication and integrity for yourself and your children. Highly recommended instructors that live and breathe what they teach. Nothing but positive Ora, love and support you become part of a family.

★★★★★ — Wanda, Mar 2023

Excerpts from public Google reviews. Read all 53 reviews →

Your first kickboxing class at Keystone X Fitness & Martial Arts

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 Keystone X Fitness & Martial Arts

67 N Main St, Dover, PA17315

Get directions Instagram · Facebook

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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.