Banshee Kit Athena 68mm Big Bore Cylinders 421cc Stroker Crank Pistons Pro Head Cub

421cc Athena Hotrods Complete 68mm Big Bore Stroker Kit

+4mm Stroker Athena Kit

Fits Yamaha Banshee YFZ 350

Years 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006

This 421cc Stroker Conversion Rebuild Kit Includes: 

• Athena 68mm Big Bore Nikasil Plated Cylinders (Pair)
• Designed Wiseco Pro Lite 68mm Custom Pistons Pair
• Piston Kits Include Pistons, Rings, Pins, & Clips
• Forged Aluminum
• Larger Port Windows For More Power
• Piston Only Wight 7.5oz
• The Longest Lasting Highest Performance Direct Replacement Piston Kit!
• Cometic One Piece Custom Base Gasket
• Heavy Duty Wrist Pin Bearings
• Pro Design Cool Head
• Custom 21cc Big Bore Domes (Other Sizes Also Available Upon Request)
• Hotrods 4mm Stroker Crankshaft With 115mm Heavy Duty Rods (True & Welded Ready To Install)
• Athena Oil Seal Kit
• Clutch Cover Gasket 
• O-Ring Kit