Thread: YZ125 project
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Old 07-15-2012, 04:02 PM
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a lot. needle bearings on both sides of the rod, ball bearings on the crank, and all of the transmission, kick starter, shifter, all ride on ball bearings

you dont see any bushings like a small engine

a 4 stroke has more moving parts so they have more bearings than a 2 stroke...
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