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Crax™ brings modular, interchangeable Volume Crack Systems to the Indoor Climbing World.

Commercial and Home Climbing Gyms can now install amazing crack climbs with the same ease and versatility as face climbing holds.


Crax offers easy bolt-on mounting on almost any gym wall surface. Our Volumes come in four foot (4’) lengths that once installed, allow you to quickly exchange a wide variety of center panels containing different crack widths and configurations.

Our systems are designed for beginners to experts to learn, train hard, and have fun!

Crax expands your outdoor adventures!

Modular Crack Panel Systems – EASY On & Off

For Indoor Climbing Gyms and Home Use

Create an amazing array of Crack Climbs 12’ to 60’ high – finger tips to off width sizes

Beginner to Expert Jam Technique Training Systems


Our passion is to help Climbers develop a LOVE for crack climbing and to expand their technique and safety skills way beyond what they thought was possible!

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(435) 315-2099

About Jam Walls

We are Veteran Crack Climbers.

We have always been inspired by the beautiful and awesome power of cracks on the soaring walls of Yosemite; the red sandstone cliffs of Utah and Colorado; and all the amazing cracks we have experienced around the world!

Climbing Gyms have allowed our sport to explode in popularity. Climbers keep getting stronger and pushing the difficulty standards because of the accessible training opportunities our gyms provide.

But what about Crack Climbing in Gyms?

Until now, crack climbs in gyms have been pretty limited due to the difficulty and expense of installing them. Gym cracks were permanent, and climbers unfamiliar with jam technique often struggled.

Jam Walls now offers Indoor Gyms a revolutionary and practical solution to crack installations.

Dale Bard

Founder & Chief Operating Officer
Chief Innovator at Jam Walls.

Not many on this planet have climbed as many cracks as Dale Bard. Many of his first ascents are legendary, and remain as test pieces today. Dale brings a wealth of crack climbing and climbing industry experience to our Jam Walls Tribe!

Dave Yerian

Founder & VP of Business Development

Dave is a Veteran Yosemite Climber with an absolute treasure trove of knowledge of crack climbing. Dave’s decades of experience have been spent literally with the best climbers of the sport. He helps our customers maximize their Jam Walls experience and obtain the best solutions for their gym needs.

Don Mealing

Founder & President

The least experienced climber of the Jam Walls team with 42 years. With modest climbing ability combined with formidable business experience as a CEO of multiple start-ups over the past 30 years, Don will help guide Jam Walls toward success as the most innovative Modular Crack Climbing Hold company in the Industry.

Mission Statement

Jam Walls builds the World’s best Modular Indoor Crack Climbing structures that help climbers have fun in the gym, and train hard for the crack climbs they aspire to Outdoors.