Small Yamaha problem

YZ125-krukasafgedraaidHerby a picture from a crankshaft of the Yamaha YZ125 from 2005, after being modified on the rotating machine.

After this modification we take it that we have left and right obtain the most equal weight on both sites to avoid vibrations (which means losses).

Also we have modified the Connecting rod for better greasing of the big end bearing.