Can anyone tell me the differences between the lengths of a 400ex swingarm compared to a 86,87 250r 88'89 250r atc 350x.
Help me out!!!

 

I haven't measured a 400EX yet but I do have numbers on the 250R's.

The 86-87 250R swing arm measures 19" from the centerline of the front pivot to the centerline of the axle.

The 88-89 250R measures 18.5" under the same measurement criteria.

Hope this helps.

 

Thanks for the help I appricate it.....