I'm all for new products for the ATV industry. It helps keep people competitive and helps with innovation. More choices is always better.
That said, the marketing on these cylinders is pretty poor up to this point. No company introduction, no background, no product specs and one lousy picture of the product.
You know why? If you Google the phone number in the ad or the screen name you get an eBay seller. These people are likely just parts peddlers and likely don't care about the actual ATV industry.
On top of that, they should be giving away a few sets of these. By the time you buy the cylinders discounted and the required pistons you're into a totally unknown setup for $500. Yea, I can't see many people getting in on that deal.
Carry on.