I recently pushed the button on one of these silicone hose kits for the beta 2 strokes, thermostat remove.
http://www.ebay.com/itm/Silicone-Radiator-hose-kit-Beta-RR250-RR300-2-stroke-racing-2013-2015-2014-RED-/161665593699?hash=item25a4053163:g:BukAAOSwBahVI3AB&vxp=mtr
I know about Samco and I rate them highly but on the other hand I like to live dangerously and I'm cheap....
All I can say is that these as great! Very good quality and properly made.
Wall thickness and silicone grade on par with samco from what I can tell. I'm sure there is a difference but also in the price.
I'll report back when I have ridden the bike with them on a bit and post pics fitted.