Welcome to Dragon Door

At Dragon Door, we don’t just sell fitness tools — we build resilient, powerful humans.

Born from a deep connection to elite military, law enforcement, martial artists, and performance coaches, Dragon Door has spent decades developing a reputation for one thing: results. Dragon Door is built for those who demand more — more strength, more resilience, more results. Whether you're looking to forge elite-level power, stay fighting-fit for life, or rebuild your body from the ground up, you're in the right place.

We launched the modern kettlebell revolution in 2001, and our mission hasn’t changed: to give you access to the most effective, no-nonsense training methods on the planet. No fluff. No gimmicks. Just proven tools for building strength that lasts a lifetime.

Behind it all is a community, thousands strong, of dedicated men and women across 43 countries and every U.S. state. People who value efficiency, grit, and evidence-based performance. People like you.

As the founder, I’ve personally practiced tai chi since 1975 and spent my life immersed in the best practices for physical cultivation. Since starting Dragon Door in 1991, I’ve made it my mission to share these practices with people who are ready to take control of their health, performance, and longevity.

Every product and resource you find here has been hand-selected to help you live a stronger, more capable, and more vibrant life. I stand behind it all, and so does our one-year, 100% money-back guarantee.

Welcome to the community.

– John Du Cane

Founder & CEO, Dragon Door

What Real Users of The IsoMax Have to Say

“Having been a Strength and Conditioning Coach for 40 years (33 years at the college level, 7 years at the high school level), I have seen a LOT of devices come and go. The IsoMax impresses me so much that I would definitely incorporate it into my program if I were starting all over again in my career. It'll defin… Read More

Rod Cole

Stephenville, TX

“Been working out since 1975. The Isomax has taken center stage. The combination of convenient, very effective isometrics and seeing the amount of force generated on each rep is phenomenal. Dragon Door's innovations are a godsend. I'm 70 and the strongest I have ever been.”

Bob Lorenz

Vernon, NY

“I have been able to gain more muscle mass and increased strength with the Isomax than with any free weights or weight machine. I am in my mid 40s and have been lifting weights since my late teenage years, but nothing I have tried compares to the Isomax!”

Mike Little

Lansing, NC

Excellent Isometric Trainer. Additional training technique to weights. Exercises your muscles differently than normal weights. For those people like me who have never trained isometrically they stimulate your muscles without risk of injury. Isometrics strengthens muscle strength / endurance in different ways to w… Read More

Tommy Cusack

London, England

I love my IsoMax. I am 55, I had the normal aches and pains you would expect for someone my age. Back, knee and tricep tendonitis. I have been using the IsoMax for 4 months, my aches and pains have faded to nothing. My blood pressure has also improved and i have effortlessly gained muscle. And i am only using it … Read More

Stu W.

Long Island, NY

Kettlebell Get-ups at an RKC workshop with Andrea Du Cane instructing

RKC Big Six Workout

big six Andrea Du Cane Jan 18, 2024

William Sturgeon, RKC Team Leader performing a kettlebell swing

The Kettlebell Swing & Low Back Pain

Category_Kettlebell Training William Sturgeon Oct 29, 2023

Better Balance with Kettlebell Exercise - article lead image with multiple cropped examples of the exercises described in the article.

Key Kettlebell Exercises To Help You Create Better Balance

balance training William Sturgeon Feb 20, 2023

What I needed

This is what I needed to get back on track with kettlebell training.

Clear video

Clear video, but nothing new compared to the texbook

The Sequel is as good as the original!

This is a great book for getting and keeping yourself srong!This is my 'bible' for calisthenics training. Thanks Coach!

excellent

It was a good live review of the pushup chapter from the book

It was a good live review of the pushup chapter from the book. But it unintentionally (I think,) accented the importance of using a slow with the exercise. Gong down on a two second pace, pausing one second at the bottom, and then rising on a two count, ads tremendous value to the exercise. When I did the book course originally, I topped out before getting to the one handed push up. I suspect that, given recent gains, that should be able the master the one armed push up this time around while using this cadence.