rear end interchange

[Dust]

Hello friends, I was wondering if anyone can give me some info? I have a 250 sx with rear end problems and was wondering what years interchanged with this machine? Thanks for any input, Dustin.

[350for350]

I'm not sure. If you want, send Flyingw a pm. He knows a lot about the sx's.

[axeman24]

whats wrong with the rear you have

[atctim]

Any and all years ATC250ES and ATC250SX will bolt right up and work. It is known that the SX rear end has one tooth difference, thus making a Big Red faster than stock on top end. In other words, if you end up using an ATC250ES rear end, you will have a little less top speed and a little more power, but again, it will bolt right in. I am assuming you are just talking about the gear box, NOT the entire rear end - brakes / axle / swing arm.

[Dust]

Pinion gear and bearing, and housing is trashed.

[Dust]

Thanks for the info, I have a 1987 250 sx parts trike with a good differential I will use.