Does anyone know if the 2012 48 has an 11.5" rear rotor or the smaller 10" version that some of the Sporty's come with? Also, what is the tooth count and width on teh belt pulley?

Thanks in advance, my sporty chart is a little bit incomplete.

 

My 2011 has the smaller rotor which I think started in 2010, cant see them going back to the larger a year later.

 

Thanks, any idea on belt pulley size? It looks like all sporty's are 68x1 but I would like to verify.