jet kit

Does anyone offer a rejet kit for the 250 rebel's? I put some pipes on mine, and it said that no rejetting was required, but thought it would'nt hurt to do it anyway.

After installing aftermarket pipes on my 2001 rebel (mac pies - highly recommend) I noticed that the top speed of the bike dropped to less than 65 mph. I figured a loss would appear, knowing the carbn would need to be rejetted. Well there are no replacement jets available, unless you want to...