
Gym climbing
With the urbanization of indoor climbing, gyms are multiplying and trending to continue to increase as climbing becomes more and more popular.
We at MAXIM® recommend our indoor climbing ropes Chalk Line and Chalk Line soft for gym use. They are very robust with a high sheath proportion and a special construction. They utilize our Str8 Jacket intermediate cover to add friction between the rope’s core and its cover and therefore reduce sheath slippage.
In addition to dynamic climbing ropes, static ropes like our KM III and KM III Max can be used for gym climbing in certain top rope situations. However, those ropes have less elongation than dynamic ropes and therefore the impact force when falling is a lot higher. That is why static ropes must only be used when installed in configurations that have been tested and inspected for top rope use and are operated by trained personnel.
MAXIM offers the following ropes for gym climbing:

“I use MAXIM ropes at MetroRock because it lasts 3 to 4 times longer than any other gym rope on the market. It’s definitely our go-to rope.”
Pat Enright
About MAXIM Dynamic Ropes
Dynamic climbing ropes are the most important piece of gear you have, because they keep you from hitting the ground. Their high elongation absorbs most of the shock in a fall, thereby taking the load off of your body and your anchors. MAXIM ropes are made of 100% high quality nylon and feature a kernmantle construction with twisted nylon cores and a braided nylon cover. MAXIM’s long lasting dynamic climbing lines are designed as a compact rope with high-energy absorption. Each of our dynamic climbing lines offers excellent handling, superior abrasion resistance and high durability.
Special features of MAXIM dynamic ropes
The core of every dynamic MAXIM Climbing rope is dry treated with our special Endura DRY treatment process, including our indoor gym ropes. This is for the ultimate level of safety protection since nylon loses a lot of strength when wet. In addition, for maximum water-repellency, selected models also feature Endura 2x-DRY and have both a dry core and a specially treated dry cover. Those ropes fulfill the requirements of UIAA water-repellency.
Our Pinnacle and Glider series also feature MAXIM’s TPT (Twill Pattern Technology) which aligns the sheath yarns with the direction the rope moves through your protection. This dramatically reduces rope drag and provides for buttery rappels.
The Chalk Line gym ropes also feature our Str8 Jacket technology, in which we tightly weave the sheath around a mid-sheath which grips the core. These are the longest lasting gym ropes on the planet.
Standards for dynamic climbing ropes
Dynamic climbing ropes are generally certified in three categories; single ropes, half ropes and twin ropes. All of them are certified to the European Standard EN 892 and the international standard UIAA 101. Within these standards, the rope’s construction, sheath slippage, static and dynamic elongation, maximum impact force at first fall as well as the minimum number of falls a rope has to withstand are regulated. Please find more information on climbing rope types and requirements of the standards in our Tech info section.

"MAXIM sets the standard for durability of climbing ropes in the industry. In the end, a rope is our lifeline, and for many years now I've felt 100% confident trusting my life to thee amazing cords. "
Jonathan Siegrist