O.S. Speed 21XZ-B Spec II Piston & Sleeve Assembly

This is a replacement O.S. Speed 21XZ-B Spec II Cylinder & Piston Assembly.

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 March 7, 2014

• O.S. Engines .21 XZ-B Speed II
• O.S. Engines .21 XZ-B V2 ABC VII