This is the best variator that is out there today. Polished slider slots, light and reasonably durable. This is the one I used and even purchased twice after a year. The belt tends to ware a grove it in after a year but that's to be expected if you are trying to MAX speed every day!
Key part in this series
https://www.youtube.com/playlist?list=PLKwd-ZcQF16yjnzTFYlZXO3e2evjuvnqN
This Variator works wonderfully in conjuction with the NCY Performance CDI. The two together will surely get your GET engine over 45MPH comfortably.
This will NOT work on Metropolitans after 2012. This will only work on carbureted Metropolitans.
*Performance parts are non-returnable and do not have a warranty. Install with care.*
P.S. I always recommend a new belt if you change your drive face or your Variator.
https://www.smallenginevelocity.com/product/gates-belt-785x18x30-honda-ruckus
or
http://www.smallenginevelocity.com/product/polini-performance-drive-belt-785x18x30-honda-ruckus