Made by Nicot and distributed by Orion, the RXB has a very KTM "inspired" frame design with a Honda CB derived single cylinder 249cc engine. A lot of Chinese drop-shipped bikes are advertised as "250" cc, but this one actually is. It's got six gears, too. Capable of 20-ish horsepower, lightweight, simple, cheap, it's about 75% of a KLX250 or CRF250L for 25% of the price. Mine is one revision older than the one they're selling now -- the current version has fuel injection. Mine is a carb.
Somehow, my local DMV tried to give me shit for the relatively tame Shinko 805's on my KLR, but this thing and its tires sailed right through and they let me slap a plate on it. Go figure. (The stock ones it came with weren't even DOT. I replaced the rear with a Tusk DSport after burning it up pretty much immediately.)
Very cool! I've been curious about China bikes. It seems like every year the quality is improving.