Originally Posted by Snowy
I saw a picture a few days ago, see picture below. Looks like they are made by Sirio.
Hey snowy, this rumour was going around at the worlds in Messina. When Ray Wood returned, he told me that RB might switch to Sirio based engines. In the Pic you posted, the carby is Definately Sirio. Exciting stuff. RB has fallen by the way side in Onroad racing and their engines just dont cut it at the moment...