RE: Difference OS 25FX and OS MAX 25F SR
Dear boss 351
Do you have the 25 FSR?
If so could you please confirm the bore and stroke of the engine as I am currently looking for a replacement piston+cylinder for mine (around 20 yrs old engine). 'Am exploring the possibility of installing a 25 FX or TT 25 Pro cylinder and piston.
Many Thanks