ok everyone i just got off the phone with the kid. he was happy to know about the different sprocket. e says that he looks forward to swaping it out soon so the bike can be faster. i told him to becareful and take his time so well see what happens. also his imformed me that he has already droped it ! it was sad hearing that my bike has already been downed. luckily it wasnt to bad and he fell over @ a stop sign on some un even ground and the only damage was that he bent the shift rod closer into the shift lever so it made down shifting pain in the *** ! but i told him how to fix that and told him that if he had any more questions or needed advice feel free to call me.