Have a 1987 Polaris trail boss 250 that needs a new bottom end. can I use a 1990 trailboss bottom end.

 

From 87 to 90 models crankshaft assy superceded to the same number. Unless stator end of shaft different,can use.BUT is the 90 model lower end good.If has ANY vertical play on rod (horizontal play ok) might as well rebuild your own.

 

Thanks for the info