Features: 1.Replacement for YAMAHA GRIZZLY 660 YFM660F 4WD HUNTER EDITION 2007?2008. 2.Due to the original factory standard, this kit is extremely suitable for your motorcycle. 3.Complete cylinder head valve rebuild kit, valve manufactured from hardened heat treated steel. 4.The installation is simple and convenient, the operation is quick, only takes you a few minutes. 5.Exquisite and careful workmanship, high quality and durable cylinder intake exhaust valve spring kit. Specification: Item Type: Cylinder Intake Exhaust Valve Kit Material: Steel Fitment: Replacement for YAMAHA ATV Replacement for YAMAHA GRIZZLY 660 YFM660F 4WD 2002-2008 Replacement for YAMAHA GRIZZLY 660 YFM660F 4WD HUNTER EDITION 2002 Replacement for YAMAHA GRIZZLY 660 YFM660F 4WD HUNTER EDITION 2005 Replacement for YAMAHA GRIZZLY 660 YFM660F 4WD HUNTER EDITION 2007-2008 Replacement for YAMAHA GRIZZLY 660 YFM660F 4WD HARDWOODS HUNTER EDITION 2003-2004 Replacement for YAMAHA GRIZZLY 660 YFM660F 4WD HARDWOODS HUNTER EDITION 2006 Replacement for YAMAHA GRIZZLY 660 YFM660F 4WD WETLANDS HUNTER EDITION 2003-2005 Replacement for YAMAHA GRIZZLY 660 YFM660F 4WD LIMITED EDITION 2003-2004 Replacement for YAMAHA GRIZZLY 660 YFM660F 4WD SPECIAL EDITION 2005-2006 Replacement for YAMAHA GRIZZLY 660 YFM660F 4WD DUCKS UNLIMITED EDITION 2006 Replacement for YAMAHA GRIZZLY 660 YFM660F 4WD OUTDOORSMAN EDITION 2006 PackageList: 3 x Exhaust Valve 2 x Intake Valve 5 x Valve Springs 5 x Valve Seal 10 x Valve Clack