I have been using the stock 50T rear since I got the bike new. love it in the woods and is great at pulling wheelies all the way up to 3rd and 4th no problem with just a slap of gas. I just ordered a 48T by mistake, actually since I listened to the parts guy telling me that was the stock size.... Will I notice that much of a difference in pulling the front end up? I'll take the gain in top end but would do with out in order to keep it a wheelie machine. I really would only use the extra speed on the street as I pin flat out now. But IMO that is what my street bike is for.... So how big of a difference am I going to feel???