07 450r jetting problems ????????

[bracey]

just got a 07 450r es hrc cam t-4 pipe crf needle has that low speed stumble what other jetting should i try we will be putting on a dyno to try to sort it out on wensday but wanting to see if anybody has a thought on jetting it thanks

by low speed stumbel, do yo mean that it bogs wehen you hit the throttle really fast...if that is what you mean, put a smaller leak jet in it...stock is 70...i went to a 42 and that bog disappeared

[Jonas]

More info please. What is your jetting now? Which crf needle did you get?

[bracey]

the needle is for a crf 05 bike the jetting is the stock for a trx450 07 we will be dyno tuning it on thursday

[roundsy]

is that the correct year of crf needle for an 06/07 trx?...jw becuz i need to pick one up this week

thanks

[bracey]

yes it is

[roundsy]

thanks