• Kawasaki EX650 Overbore
  • Kawasaki EX650 Overbore Pistons

Kawasaki EX650 Overbore + 2mm Piston Kit/Cylinder/Gaskets 680.94cc


Kawasaki EX650 Overbore Piston Kit/Cylinder/Gaskets 680.94cc is a 13.5 to 1 large valve valves pockets includes pistons,rings,lighter wrist pins, cir clips. 

Piston Info

SP12-650 Complete Kawasaki Engine Kit.

Kawasaki EX650 Overbore + 2mm Piston Kit/Cylinder/Gaskets 680.94cc Motoamerica legal pistons is a 13.5 to 1: Large Valve Pockets for 1mm over valves includes pistons, rings, lighter wrist pins, and cir clips. At the forefront of performance, piston manufacturing has been a result of continuous research and development of unique materials, piston designs and technologies. Utilizing State of the Art CNC machines for manufacturing, along with purpose-designed forgings, while being able to maintain exacting specifications on every piston while holding tolerances to millionths of an inch.

The Cylinders are proprietary Nickel Silicon Carbide (NSC) cylinder plating process and cylinder services. This NSC process is so superior to factory plating that Millennium Technologies is often used by professional race teams all over the world to re-plate brand new OEM cylinders. Millennium stands behind their plating with a LIMITED LIFETIME WARRANTY.

Modern engine designs use very light aluminum cylinders. The aluminum base metal is very soft and would wear out almost instantly without a very special protective barrier. The Millennium Technologies Nickel Silicon Carbide (NSC) cylinder plating process forms an extremely hard, extremely durable barrier with less friction, improved heat transfer, less weight, and ultimately more horsepower.

Nickel Silicon Carbide (NSC) plating service includes:

  • evaluation
  • stripping
  • NSC plating
  • diamond hone finish


Each Kit Consist of the Following:

Spears Racing 2mm /680.94 piston kits

Matched /Bored and Plated Cylinders(Exchange/Core)

Custom Head and Base Gaskets


Weight 5.0 lbs

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