I was wandering if the Swing Power Series from YY (500, 900 and SP Ti) are available in 3U and 2U model or their weight is exclusively determine by their model (SA, SR, SS, SX)? We all know that the Titanium Series have 2U and 3U models available, but what about the SP series? I had a SP500 before and now a SP Ti and their is no mention of 2U or 3U model on them... Thanks you.
the different types of swing power racket determines the weight, if you look closely at the handle, the little sticker on a Iso900 says something like: SS-G4.5 instead of 2U-G4.