Yamaha Banshee 350
Banshee Athena Complete 68mm Big Bore 421 Stroker Hotrods Crank Pistons Pro Head Domes


Starting from $1,649.99

AZ Quad Parts 421cc Athena Hotrods Complete 68mm Big Bore Stroker Kit

This Is The Only +4mm Stroker Athena Kit On The Market!

This Is The Complete Top To Bottom Motor Rebuild That Will Compete With The Cheetah Cub With A Fraction Of The Cost!

 With proper tuning on pump gas you can easily hit 95+ hp with this 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)
  • AZ Quad Parts 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
  • Wiseco Heavy Duty Wrist Pin Bearings
  • Pro Design Cool Head
  • AZQP 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


Price: $1,649.99

FREE STANDARD SHIPPING is available in all US lower 48 states, APO addresses, and Puerto Rico via USPS or UPS. (*Exceptions apply for Alaska and Hawaii.)
Free standard shipping means we will select an option that gets you your parts as soon as possible while still being economically priced.

*Shipments to Alaska and Hawaii are free as long as the parts will fit in a USPS Priority Mail Flat Rate box or envelope.
For any other type of shipping there will be a charge.


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