Needle Bearing, 10 roller for 10mm dia. piston wrist pin.

Grubee Inc

$5.95 

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

Some cheaper priced engines have the lower quality 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.