[Cosmo440!]

Will an ‘85 Fourtax 250 rear diff directly swap onto an ‘88 Fourtrax 300? If not does anyone have a good ‘88 rear diff? (Hey, never hurts to ask).

 

[Here 2 help]

Not directly - you may have to change the swing arm along with the brake assembly (if it will fit the 250 frame) - the short answer is no. BTW, it's not a differential - it's simply a rear drive gear case - the axle is solid from one side to the other (live axle).

Also to aid in your search, the rear gear case was the same for 88-94 TRX300 - to the best of my knowledge, no other gear case is a direct swap.