Each kit includes all necessary gaskets, washers, seals and O-rings; kit contents vary by model Yamaha -- YZ 250 F -- (2008, 2005, 2007, 2003, 2006, 2009, 2001, 2004, 2002, 2013, 2010, 2011, 2012);...
Each kit includes all necessary gaskets, washers, seals and O-rings; kit contents vary by model Yamaha -- YFZ 450 4x2 -- (2006, 2005, 2009, 2004, 2007, 2008, 2012)