Crax Systems are the best way to elevate your climbing gym or home gym space! They are completely customizeable based on your gym space, route needs, and preferences. You can purchase Crax Systems in any height for any system. For example, you may want a Crax System with a single crack route that is 40ft high for your climbing gym, or a 12ft high Crax System with a triple crack route for your Bouldering Gym. Choose one of our pre-designed gym packages or create a custom design by adding or subtracting Crax sets!

Step One

Measure Your Space

Determine your maximum height and width of the wall(s) in your indoor gym space. Crax Systems are fully customizable to fit within your space.

Step Two

Determine Your Crax Width

Our standard gym packages come in widths of a single crack, double crack, or triple crack routes. The advantage of having multiple systems is that you don't have to change routes as often. The Triple Crax System can be set up for a Finger Crack, Classic Hand Crack, and Off-Width routes. You can still easily swap out individual Crax shapes to create slightly different route combinations.

Step Three

Choose Your Look

Crax Systems come in two color choices for the frame and two color choices for the pods to match your climbing gym or home gym wall.

Step Four

Choose Your Gym Package

Pick between one of our three pre-designed gym packages based on height and width. Our standard gym packages come in heights of 12 feet, 24 feet, and 36 feet. You can customize the height by adding or subtracting height in 2-foot increments.

Shop Gym Packages

Step Five

Customize Your Package

Add on or subtract any of our five basic shapes of Crax sets in 2 foot intervals.

Shop Extras
  • Customizable Crax Sets

    Our Gym Packages are made up of five different basic Crax shapes. Each Crax Set is 2 feet tall and available in three different colors (Graphite, Granite, and Sandstone). Each of our Gym Packages includes a variety of Crax shapes which are easy to customize to create different route combinations.

  • Single Crax System

    This graphic shows the 12-foot tall Single Crack Bouldering Gym Package which includes five total Crax Sets. It's easy to swap out individual Crax Set shapes to customize the route and easy to adjust the height of the route in 2-foot intervals.

  • Five Basic Crax Shapes

    Each of our gym packages include a variety of our five basic Crax shapes that are designed to mix and match so you can set new routes with a variety of combinations.

  • Crack Fluting

    Our Crax shapes have Fluting cuts along the radius edges of the crack. The fluting gives texture and eliminates sharp edges. This creates a more natural look and feel when climbing!

  • Crax Set Dimensions

    Each Crax Set (2-foot pod + frame) is 23.5” long, and 6.75” deep (tall). The faces are all fixed at 30 degree angles (14” wide per side), and the distance between frame to each crack shape top and bottom is fixed at 3”. Inside of this 3” channel is where we cut in
    our shapes and add fluting.

  • Gym Package Options

    Our standard packages come in heights of 12ft, 24ft, and 36ft but are fully customizable by adding or subtracting Crax Sets in 2-foot increments. You can add Crax Systems Accessories from the Extras collection, or contact us to customize your Crax System and create the perfect indoor training wall.


How to Install Crax Systems

The Nitty Gritty Details


Why do I want to learn crack climbing?

Learning to crack climb safely and efficiently is the key to climbing outdoors and elevating your adventures!  Cracks are the most common way to protect yourself with gear and provide natural features to climb on rock surfaces everywhere.

How many sizes do Crax Volumes come in?

Crax volumes are 8 inches deep, and come in 2 ft. tall sets with interchangeable crack shapes (Pods), allowing you to build your dream wall to any height.

Are Crax Volumes adjustable?

Not only are Crax volumes fully adjustable from 5/8” to 6+” wide, the design allows you to interchange crack shapes!  Create an almost unlimited variety of different cracks to climb.  Changing out the Crax Pods is super easy – remove two anchor bolts and put in a different Pod, then re-tighten. 

How hard are Crax Volumes to climb?

Crack climbing difficulty is determined by BOTH the width of the crack and the steepness of the wall Crax are attached to.  For instance, a less-than-vertical wall where a Crax volume is set to perfect hand width (2 ½”) will typically be in the 5.7-5.8+ range depending on shape of the crack.  If the same configuration is placed on a wall that overhangs by 10 degrees, the difficulty will often be 5.9 to 5.10.  A 20 degree overhang can push difficulty to over 5.11.

How many crack shapes are available?

Currently, we have five (5) different shapes available.  There are two “Z” shapes which are patterned after the types of angular cracks encountered on Granite and Sandstone, two “S” curvy type cracks which can also be found on Granite and other rock formations, and a parallel “Split’R” splitter shape.  Changing up these pods on your wall regularly will really increase the variety and difficulty of your routes!

Can I mount these cracks in my home?

Absolutely! Jam Walls Crax systems are ready to mount directly to your standard 16" studs in your home or garage!

How do you clean Crax Volumes?

Crax should be cleaned on the same cycle as you would clean other face holds and volumes. We recommend at least once every six weeks. With Crax, you leave the frames on the wall, and remove only the Crax Pods for cleaning. Use spray cleaner detergent and a bristle brush. We DO NOT recommend power washing as it may compromise the wood material within the volume.