Check the listing for details. Yamaha Banshee Athena 64mm Stock Bore Big Triple Ported Cylinders WISECO Pistons. Condition: New. Listed at 639.98 USD. Athena 64mm 350cc Stock Bore Cylinders Wiseco Pistons & GasketsThe Best Big Bore Kit On The Market!Fits Yamaha Banshee YFZ 350Years 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 This Kit Includes:Athena 64mm Nikasil Cylinders Only (Pair)Larger Water Jackets To Keep The Motor Running Cooler!Direct Replacement OEM Stock Bore CylindersTriple Exhaust Ports For An Amazing Powerband!Nikasil Plated For Less Friction & More ReliabilityAZ Quad Parts Port Specs (Casted)Base & Intake Gasket SetHeavy Duty Wrist Pin Bearings (Pair)Wiseco Pro Lite 64mm Pistons (Pair) Piston Kits Include Pistons, Rings, Pins, & ClipsForged AluminumThe Longest Lasting Highest Performance Direct Replacement Piston KitPlease note this kit does not include a head. You can use either a stock OEM head and domes or a Pro Design cool head