There are at least 2 companies that have rented out Spyders in the past, but neither of them is showing a Spyder on their current list of bikes. My Spyder had actually been hired out by the importer and used for a trip around the country before I purchased it.
The largest retailer in the country is probably JFK in Auckland. They don't rent them out, but would most likely know if anyone does do it. You can contact them via their web site:
https://www.jfks.co.nz
Depending on how long you are planning on visiting one option would be to purchase a second-hand one and then sell it before you leave. But that can be a bit risky. Unless, of course, if you buy mine.


There are retailers of 2-wheelers that offer a guaranteed buy-back, but none that I know of who do it with Spyders.