Slackers Zip Line Kits Manufacturer
Turn your backyard into an elite training ground and high-flying adventure park with Slackers, the Colorado-based brand that brings the “Ninja Warrior” experience home. From the glow-in-the-dark thrills of the Night Riderz 100-foot cable to the family-friendly Eagle and Falcon series, these kits are engineered for safety and durability with heavy-duty steel cables and spring brake systems. Whether you are navigating a Ninjaline obstacle course or soaring on a zip line that supports up to 250 lbs, Slackers makes active outdoor play accessible for kids and adults alike.
Top Slackers Zip Line Kits
Slackers Eagle 90' Zipline Kit
This best-selling flagship model provides a professional-grade 90-foot flight experience complete with a fully assembled steel trolley and a dedicated spring brake system for maximum safety.
Slackers Night Riderz 100' Zipline
Equipped with over 40 motion-activated LED lights on the seat and trolley, this 100-foot kit extends the adventure into the evening by illuminating your backyard flight path.
Slackers Ninjaline 36' Intro Kit
Modeled after professional obstacle courses, this versatile hanging system features seven interchangeable challenges like monkey bars and gymnastic rings to build core strength and agility.
Slackers transforms ordinary backyards into high-flying adventure hubs by bringing professional-grade thrill seeking to your own family lawn.
Main Product Categories
Zipline Kits
Soar through the air with precision-engineered cables that range from the 40-foot Falcon series for beginners to the 100-foot Night Riderz kits featuring LED illumination. These kits come fully equipped with galvanized steel cables, comfortable seats, and specialized spring brake systems to ensure every landing is as smooth as the ride itself.
Ninjaline and Swingline
Challenge your physical limits with customizable obstacle courses that utilize heavy-duty webbing and various hanging attachments like monkey bars, rings, and ladders. Designed to build core and upper-body strength, these systems turn any two sturdy trees into a comprehensive outdoor gym for aspiring “ninja” warriors.
Adventure Accessories
Maintain and upgrade your setup with a wide array of high-quality components, including heavy-duty trolleys, replacement seats, and essential tree-mounting hardware. These accessories allow families to customize their flight paths or add new challenges to existing lines as children grow more confident and skilled.
Real Experience Reviews
Jessica Bouten “We recently installed the 90-foot Eagle Zipline kit between two oak trees in our backyard, and it has completely changed how our kids spend their afternoons. The setup took about 45 minutes—the instructions were straightforward, though you definitely need two adults to get the cable tension just right—and the included spring brake gives me total peace of mind. My eight-year-old and ten-year-old have been out there every single day since, practicing their ‘flight’ form, and the seat is sturdy enough that I even took a few turns myself without any issues!”
Susan Courtney “I purchased the 36-foot Ninjaline Intro Kit for my three grandchildren, and it’s the best investment in active play I’ve made in years. They used to reach for the TV remote first thing in the morning, but now they are dressed and outside tackling the obstacle course before breakfast. We added the rope ladder accessory because the five-year-old is a bit shorter than her sisters, and it’s been wonderful watching them help each other navigate the different grips while building their grip strength.”
David Suhl “As an engineer and a grandparent, I was very impressed with the quality of the hardware in the Falcon series zipline we set up at our summer cabin. The steel cable is high-grade and the plastic trolley has sealed bearings that provide a surprisingly quiet and smooth glide. While the diagrams in the manual were a bit small, the actual components are clearly built to last through the seasons, and the adjustable seat height makes it easy for all the grandkids, ranging from ages 6 to 14, to ride safely.”
Slackers FAQ
What is the maximum weight capacity for a Slackers zipline kit?
Most standard Slackers zipline models, including the Eagle and Falcon series, are designed to support a maximum rider weight of 200 lbs (91 kg). However, it is mandatory to perform a “Stress Test” during installation by hanging 250 lbs (113 kg) on the line to ensure the trees and cable are securely anchored before a child takes their first flight.
What size trees do I need to install a zipline safely?
For a secure installation, you must use healthy, living trees with a minimum trunk diameter of 12 inches (31 cm) or a circumference of at least 38 inches at the point of attachment. You should never attach the cable to dead trees, branches, or power poles, as the “side load” force generated during a ride is significantly higher than a standard vertical weight.
Is it difficult to set up the zipline or Ninjaline by myself?
While the instructions are designed for home users, the installation is a two-person job that typically takes about 60 minutes. One person is needed to hold the tension of the heavy-duty steel cable while the other secures the U-clamps and turnbuckles; the Ninjaline is slightly easier as it uses a ratchet system, but it still requires two sets of hands to properly height-align the webbing between trees.
Do I need to take the kit down during the winter?
Yes, it is highly recommended to uninstall the cable, trolley, and seat once the outdoor play season ends. While the components are weather-resistant, exposure to freezing temperatures, ice, and excessive UV rays can make the plastic seats brittle and lead to surface rust on the steel hardware, shortening the lifespan of your adventure gear.
What is the difference between a Slackline and a Ninjaline?
A Slackline is designed to be installed just a few feet off the ground for the purpose of balancing and walking across the webbing, whereas a Ninjaline is mounted higher up and features sewn-in pockets for hanging obstacles like rings and monkey bars. If your goal is to build an overhead obstacle course to improve upper-body strength, the Ninjaline is the correct choice.
Can I install these products without using trees?
It is possible to use 6×6 wooden posts if they are properly engineered, but this requires significant groundwork. For a safe setup, the posts must be 14-16 feet tall with at least one-third of the post buried underground and secured with concrete to handle the lateral tension of the zipline or obstacle course.