Honda ATC250R Crank Install and New Old School Big Bore Trike Build

[@MrTonyharrell]

You don’t measure the bore from the top edge, it never wears there.

[@jasonmushmansixtyfive]

I did this just to get a rough estimate before i got the number off the piston. This piston is the 1st over 89.50mm stock is 89.00mm
Thank you for the comment!