Mine is set up for the Baja Score races witha 15/47. I'm curious to what all the other piggy riders are running. Also if any of you piggy guru's know what the max m.p.h. comparison is between running a 15 or 14 tooth and a high 50 to a low 44 or so rear sprocket. Thinking about switching down to get more low end torque (because the piggy is not quite powerful enough ).