Kit includes
(2) new Nikasil cylinders (replaces OEM 3088214, 3085936, 3089226, 3089232, 3089525, 3089934, 3090388)
(2) pistons (w/rings, wrist pins, circlips)
(2) caged top end bearing
(1) top end gasket kit.
Fits the following Polaris 2004-2015 550 fan:
Feel free to ask questions. No cores required. I also have crankshafts if you need one.