Boomerang Trolley

$ 995.00
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Boomerang Options:
Boomerang Trolley

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The Boomerang is a remote controlled trolley return system designed for zip lines built over terrain that makes it inconvenient to return the trolley to the origin point. If you're planning on building a zip line that runs over water, rough terrain, or sits too high for a regular trolley walk-back, then the Boomerang is for you.  The Boomerang is designed for zip lines with a 6% slope or less.  Soaking wet zip lines can impact the Boomerang's ability to travel up the line.  Best when used in dry weather.

The Boomerang is not designed to carry a passenger up the zip line.  Max weight is 10lbs when the motor is moving the trolley up the line. The Boomerang is patent pending.


Want to see how it works? Check out our product overview video!



Need replacement parts? 


- Battery

- Charger

- Drive wheel


If you're not happy, send it back for a full refund within one year.


Commercial Use: Call us 1-888-476-3701

Technical specs:

  • Handlebar weight capacity: 350LBS
  • Weight: 3.4LBS
  • The Boomerang will perform differently based on the gearing used, and whether a load (like a seat and handlebar) remains attached during the return. With standard gearing, you can expect around 100 returns at 12MPH. With high speed gearing you can expect 75 returns at 16MPH. (On a standard 150' zip line)
  • Fits cable diameters from 1/4" to 1/2" 
  • Transmitter range of up to 2900' with line of sight

Watch the Boomerang in action!

FREE Design consultation

Want to talk with a specialist about your project?

Schedule a free 25 minute consult to help you plan your zip line project. Plus you'll receive a discount code to help with your order!

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How do I measure elevation change in my backyard?

Please refer to the manual that comes with your kit for specific installation instructions. 

Stand at the end tree and hold a 4 FT Carpenter’s Level like a rifle.  Holding one end up to your eye, point the opposite end at the base of the starting tree, right where the dirt and tree meet. Make sure the bubble is between the two hashes indicating level (crouch down if your yard has a minimal slope or climb a ladder if your yard has lots of slope).  

Once you have the level aiming at the base of the starting tree, measure from the Carpenter’s Level down to the ground.  This measurement is your natural elevation change.

If you have questions, please do not hesitate to give us a call at 888-476-3701

How do I figure out the slope for my zip line?

Please refer to the manual that comes with your kit for specific installation instructions.

The slope determines the speed of the zip line. Essentially this is the angle you set the cable at between the two trees. The slope is calculated by multiplying the distance between your trees times .03 or 3%.

More details on Slope can be found in the Zip Line Gear handbook included with your purchase. You can also view a digital version of the “Cable Slope & Sag” right here. We recommend finding a landscape with a natural slope of 3% to 6%, This is a 3’ - 6’ foot drop per 100’ feet. 

For zip lines that will NOT utilize a Bungee Brake System, (a Stop Block is NOT a braking system) the maximum allowable slope is 3%. For zip line setups that include a Bungee Brake, the maximum allowable slope is 6%. 

!!WARNING!! Zip line must never exceed 6% (6’ foot drop per 100’ feet) riding slope. High speed collision with end point may cause injury or death.

I don't have trees. Can I use posts?

Yes you can, but you need to carefully read the instructions for how to select, and install posts in the Backyard Zip Lines handbook included with your purchase. Alternatively, you can review the information in the digital version of our handbook right here.

If you are in any doubt as to how to properly select and install a wood post, please do not hesitate to contact us at 888-476-3701.

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