The O. S. .12XZ Speed rebuild kit features a hardened chrome-plated cylinder liner for high durability and long life. The machined aluminum piston features parallel rings that trap fuel oils and use them as a seal to enhance compression and boost power. Four port cylinder. Racers can now get everything they need in one package! Includes: one cylinder liner, one piston, one connecting rod, one piston pin and two piston pin retainers.

                                         Retail
OSMG4801 Cylinder Rebuild Kit 12XZ SP   $159.99

Visit the O.S. Engines website at www.osengines.com

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