Needle Bearing for piston wrist pin

Only SkyHawk engines have the best quality 10 roller piston wrist pin needle bearings for 10mm pin as standard issue.  

Competitor's engines have the cheap 9 roller bearings.   Advantage: SkyHawk

Both 9 and 10 roller bearings are interchangeable on 10mm wrist pins except for the quality difference.  The higher priced 10 roller sold here-in is a premium choice.  

 

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