I was wondering if I can fit a 125cc engine into a DR90? I know it will fit a 110cc but it was kind of a gray are as to whether a 125cc would bolt on. Also,if it is currently a semi automatic will any modifications need to be made if a fully automatic is used? Thanks

 

Should fit physically.. the 90 thru 125 is the same basic engine case. no mods needed to go to a fully auto unless your going from a cvt to a gear box.