T-Cycle Chain Tensioner for Rectangular Tubing

***If your bike has circular tubing, click here*** The Universal Boom Adjust Chain Tensioner allows you to move your boom without hassling with the chain. It automatically compensates for changes in chain length when you adjust the seat for different riders. Perfect for anyone that would like to share their trike with different riders. The installation is simple, design is sleek and materials are strong. If more than one person rides your trike, then a Universal Boom Adjust Chain Tensioner is perfect to eliminate the worries of whether the chain is too long or too short! We make the mounting clamps in a wide range of sizes, so let us know your trike/bike make and model, we'll figure it out from there. FAQ 1. So I can move my boom in and out all I want and I don't have to change anything else? Yes. You're free to move the boom as much as you'd like, and you won't need to mess with the chain at all. 2. How does it work? One end clamps to the boom tube, and one end clamps to the main tube