Rear Sprocket for Currie, eZip, IZIP, GT, Mongoose, and Schwinn Electric Scooters Compatible with Currie, eZip, IZIP, GT, Mongoose, and Schwinn electric scooters. 90 teeth, 7-1/4" OD, 34mm (1-5/16") ID. 1.375" x 24 TPI right-hand clockwise threads. Has ISO standard threads that fit practically all modern bicycle wheels. SPR-2589F is a lower-priced 89-tooth freewheel sprocket that directly replaces this sprocket. ...