thanks!
YZ85 is the same pattern. i have yz 85 v force reeds in my rd actually.
however, not really nec on an S2 as a stock rd cage can flow enough to get close to 65-70 crank HP on an aircooled rd motor. since the s series cyls are smaller, might not be that huge a gain. but def better depending on porting.
spoke with my buddy, he has the white protoype, its probably (99%) going to be cast. possibly urethane, possibly metal, going to try both. hes taking it to his team to look at this week and make the mold. might be sand casting it ourselves as he has experience with that directly.
fyi this is a comparison of stock rd reeds, banshee reeds and stock yz 85 reeds (tip width)
here are the yz v force reeds in the 4lo cyls, same as aricooled rd bolt pattern AND banshee/rz. theres options but considering the draft of the adapter the yz 85 is about as wide as you should be able to go. keep in mind these are bolt on with NO modifications to cyl nec.
this is really just an experiment for the s2. im sure it will work well but not as good as a modified cyl with big ass cages on the back.