This is a complete engine top end rebuild kit that is compatible with the 1988-2000 Honda TRX 300 2x4 & 4x4 FW and includes a new stock size cylinder, new standard size piston kit, new top end gasket kit, new oil filter with o-rings, new spark plug, and free decals. This is a complete engine top end rebuild kit that is compatible with the 1988-2000 Honda TRX 300 2x4 & 4x4 FW four-wheelers (this is for the Utility Model ATVs with the rack on the front and the back, NOT the race model ATVs). This kit includes: (1)A New Aftermarket Honed Cylinder. We make sure that each of our cylinders is honed before they leave our facility. Why is this important? Final honing of the cylinder creates a crosshatch pattern that gives the piston rings the correct textured surface for proper seating. This insures proper break-in for the rings allowing them to seat correctly which, in turn, provides a longer lasting top end rebuild. (2) A New Stock Size (74.00MM) Piston Kit. This includes a new piston, piston rings, wrist pin and two circlips. The stock size bore makes your rebuild hassle free with no carb jetting or modifications required. This ensures that when you receive this kit, everything is sized, machined and ready to bolt on. (3) A New Top End Gasket Kit. This kit includes not only the cylinder base and head gaskets, but also the exhaust gasket, both valve stem seals, rocker cover gasket, o-rings, etc. (4) A New Oil Filter With Sealing O-Rings. We provide a new oil filter with the sealing O-rings which should always be replaced any time you rebuild your top end. You should always install a new oil filter to help insure longevity of your new top end rebuild kit. (5) A New Spark Plug, accurate for your ATV. (6) Instructions for Proper Break-In Procedures and Cylinder Preparation Instructions. (7) Free G&H Discount ATV Supply and Hi-Caliber Powersports Parts decals. Our kits are a direct fit. They are ready to bolt on with no modifications required. They come boxed in styrofoam and bubble wrap for extra protection.