hi im new and need some help??? on the trx 250r did the cdi's changed ??
for the years 86-87 to 88-89 ???does any one know ? i'm trying to build a R
bottom end is long rod all reworked.. the top end is esr bolt on cylinder
310 and i keep melting he piston esr said it maybe the dyn fs cdi box i bought
they said put on a stock one which is better?? this is the second cylinder i have been thur and the 9th piston i need help bad !!!!
thanks to everyone
chris