AZQP 99mm 490cc Big Bore Cylinder Top End Kit With JE Pro Series 13.5:1 Piston Kit! This is the best and most reliable big bore kit on the market! Fits Honda TRX450R & TRX450ER. Years 2006 2007 2008 2009 2010 2011 2012 2013 2014. 99mm Nikasil AZQP Big Bore Cylinder.JE Pro Series 3 Ring 13.5:1 Piston Kit (Includes, Piston, Pin, Rings & Clips). Cometic Complete Top End Gasket Set With MLS Head Gasket. This is a bolt on kit with no machining required. It will work with your stock head and valves. This item is in the category "eBay Motors\Parts & Accessories\ATV, Side-by-Side & UTV Parts & Accessories\Engines & Components". The seller is "azquadparts" and is located in this country: US. This item can be shipped worldwide.