I have a stock KDX 250 '94 model and I am Going to put Boysen power reeds and either a FMF Power core or pro circuit silencer. I am keeping the stock pipe as I have heard that it is as equal to the after market pipes, My bike also has been ported. My question is will I need to rejet my carb to obtain max performance and if so what would be the best combination.
Thank-you in advance.
Darren
Thank-you in advance.
Darren