I didn't even know they started selling them already. I thought those were just previews of what's to come.
Edit: Other than the Den-O Belts, Kiva Belts, DecaDriver, and Double Belts (when I'm using "Belts" as a term to reference the entire series, including the title Riders and secondary Riders) as listed on the site, can these extensions work on the following Belts as well?
Blay Buckle
Hopper Zecter
And I saw on CS Toys that there are Legend Rider Series extensions. Are they different from the regular ones, because CS Toys has them listed as two separate products.