Description Brand new 46mm Hyway cylinder/piston kit. Fits Husqvarna chainsaw models 51, 55, and 55 Rancher.   The kit includes Nikasil plated cylinder, piston, ring, wrist pin, circlips, gaskets, Oregon spark plug and decompression port plug.   Great quality kit with 1 year warranty against defects.   Has port for decompression valve (includes plug if you don’t want to use a valve). *Please note: the muffler slots require slight enlarging with a round file to fit the muffler bolts properly   Wolf Creek Saw Shop is a proud U.S. seller, we ship within 1 day of receiving payment, and you will get your parts quickly!