rm250 topend

[Puff_Pryor]

hey guys i have a 1992 rm 250 that needs a new topend what all do i need im new to two strokes and this bike has been rebuilt before so do i just need it bored and sleved or just bored and a new pistion it has a stock size pistion in it now plz help

[tltcracing]

i would like to help but im no motor guy. just call one of the motor compainies like wiseco and see what they say.