i wonder, because i know a guy who 3 weeks ago bought a proto onza frame with the reversed chain tensioner system it was black too. It's an onza T-master proto, i gathered. they guy who rides it is tall, has a shaved head and a f**k-off tattoo reet down his left arm. and i believe he mentioned something about belt drive. interesting idea, that. No tension issues, it won't eat your jeans, or snap. I've seen a mtb with one, it looked beefy