The Terracycle AZUB 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, a Boom Adjust Chain Tensioner is perfect to eliminate the worries of whether the chain is too long or too short!
These have hardware sized specifically for AZUB Trikes.