Includes all gaskets and o-rings necessary to complete a piston (top end) rebuild. Competitive pricing made to meet and exceed OEM quality and designed as a direct OEM replacement the Whites Complete Gasket Set if your one stop shop for engine rebuilds.Designed for OEM replacementMade from high quality materialsMeet or exceed OEM specificationsCompetitive pricing Fits: Yamaha YZ450F 2011-2013