Piston & Sleeve (21XZ-B) by O.S.

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This is a replacement O.S. Cylinder & Piston, and is intended for use with the O.S. .21 XZ-B. 

NOTE: You will need to detach the old connecting rod and re-attach it to the new piston during replacement. We recommend that when you replace the piston/sleeve on any engine, you also change the connecting rod and wrist pin clips. 

This product was added to our catalog on August 23, 2011.