Kawasaki EX650 Overbore + 3mm Piston Kit/Cylinder/Gaskets 697.06cc


Spears Racing Piston Kits have been winning races and Championships all over the world for over 4 decades. Spears Racing pistons have been in several of the race wins in close course racing and in road circuits in Europe and has won the Isle Of Man TT Twins race several times.



SKU: SP700-Kaw Engine Kit JE Categories: , Tags: ,


Kawasaki EX650 Overbore + 3mm Piston Kit/Cylinder/Gaskets 697.06cc pistons kit is a 13.5 to 1: These pistons are Lateral Gas Ported with 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.

Spears Racing has been designing and making race pistons with the State of the Art CNC Machining and manufacturing alliances with JE-Pistons for decades. Spears Racing continuous committed to excellence to advance as the industry changes. This commitment has resulted in more forgings specific to certain applications, proprietary treated wrist pins and piston rings manufactured only for us. Each of these aspects has been put through stringent research and development stages to ensure that our product will exceed your standards.

Spears Racing along with JE-Pistons the piston manufacturing has been a result of continuous research and development both in the dyno room and on the race track winning championships all over the world.

Utilizing State of the Art CNC machines for manufacturing, along with purpose-designed forgings, while being able to maintain exacting specifications on each and every piston – holding tolerances to millionths of an inch. This is the new forging that is lighter than stock OEM Pistons.

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:

NSC plating
diamond hone finish

Each Kawasaki EX650 Overbore Kit Consist of the Following:


Matched /Bored and Plated Cylinders

Custom Head and Base Gaskets

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