Please note there are two different versions of IZIP I-150 electric scooter, with each version having several parts that are not interchangeable between the two models.
The quickest way to determine your model of I-150 is the following:
If your scooter has a 200x50 rear tire, you have the 2006-2007 model of IZIP I-150
If your scooter has a smaller rear tire than the front tire, you have the 2008 and newer model of IZIP I-150