TerraTrike’s 10t Deluxe Idler is designed for quiet operation and uniform wear (original polyurethane version could flat-spot). Long-wearing black delrin material with pre-installed sealed bearing. 54mm OD, 8mm ID (bearing ID), 15mm wide Standard OD for easy retrofit on older trikes with single or double slotted idlers) If you have a double slotted rear idler you will need two of these plus a spacer for replacement OEM replacement part Standard on EVO and Gran Tourismo.
