huh. yea one just showed up for sale near atl, for like 600 tho so not really worth it.
All the info I could dig up there were 125's til like 2016 but i couldnt find a 50 past 2011. but youre right, even on wikipedia:
"As of December 2014, the Madass 50 is once again available in the US in 49cc form, via a new distributor, Excalibur Motorsports of Chino, California. It is CARB certified for sale and use in the state of California."
seems to still be a thing, separate from the SAXXX mentioned above and apears to be totally separate from sachs, entirely a chinese company selling chinese madasses wit the sachs name.