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1st time YZ125 bottom end overhaul

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The big end bearing let loose on my 08 YZ125 last fall and damaged the piston and head. Winter project!

I installed a "Hot Rods" crank, bearings (KOYO), seals,head and top end. Also replaced most of the transmission bearings and a shift fork. Not too tough of a job, took my time and didn't force anything. Used heat and cold for bearings and crank.

 Rode it for the first time this weekend and it started up ran & shifted fine and no leaks! 

The You Tube videos from Ken O'Conner racing were a great help too!





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