Like all TerraCycle idlers, these will ensure trouble-free miles with less vibration and more power delivered to the drive train. The Catrike Dual Idler Kit is for Catrikes that didn't come with a TerraCycle idler. This kit essentially replaces your stock Catrike parts with high-end TerraCycle idlers. Depending on your boom setup, you can eliminate most if not all of your chain tube! The kit includes a Sport Power Idler, Return Idler, and a Stainless Single Chain Keeper, a Floating Chaintube Holder and all the hardware to make it run beautifully.