About Stonecrag
Climbing equipment for people who go up alone. Designed, machined and tested in Mexico.
Stonecrag makes equipment for rope solo climbers.
That is a small audience, and it is the reason the company exists. Rope solo climbing has been practised for decades using gear designed for something else — belay devices rigged upside down, ascenders pressed into a role they were never tested for, systems held together by the climber’s own care and repeated exactly right on every pitch or not at all.
El Mudo
Our flagship product is El Mudo, a stainless-steel self-belay device and the only commercially available system engineered specifically for rope solo climbing — both lead and top rope.
Its specialised engineering and full stainless-steel construction eliminate the risks of improvised setups. It has been covered by the American Alpine Club and appears in the third edition of Andrew Kirkpatrick’s Me, Myself and I, the reference work on the discipline.
How we design
Every product here exists because a climber needed it and nothing on the market did the job. Not because a category looked profitable.
That shows up in the details. El Mudo 3.0 was redesigned around a single complaint — creep on the rope while hanging — because that complaint made the device worse to work a route with. The Mudoble exists because users asked for double-rope solo and there was nothing to point them at. The Yomi was made compatible with every Mudo because owning three devices to cover three ropes is a bad answer.
Some of the climbers who test this gear have been active in the sport for more than forty years. Feedback re-engineers parts here; it does not get filed.
Made in Mexico
Everything is designed and manufactured in Mexico. The Crack Gloves are cut and sewn by leather artisans, by hand. The devices are machined from aerospace aluminium and stainless steel.
Learning to use it
Rope solo climbing is an advanced discipline. Getting the system wrong has consequences that no product design can absorb, which is why every device ships with a manual.
Read the manual. If you can, get professional instruction. Then go climb.
Get in touch
support@stonecrag.com or the contact form.