Big bore kit for 650/800 based engines.

Forged JE high compression pump gas piston kits.

MLS (Muti Layer Steel) Cometic head gaskets.

Cylinders bored and honed to match over bore pistons.

Rings are file fitted to cylinder bore.

11.5:1 compression ratio

Machined from 2618 T6 high tensile forged aluminum

Dome/Dish features smooth flowing radii and require no deburring or preparation

JE designs are specifically engineered for extreme applications including professional competition

Pins, pin fitment, lock and rings included

Engineered and manufactured in the USA With over 60 years of experience, JE Pistons is the leader in high performance forged pistons. They have built a reputation that the competition can only follow. JE has a history of manufacturing the highest quality pistons and components that professional engine builders, race teams, and high performance enthusiasts trust and rely on. The top engine builders in NASCAR, IMSA, NHRA, AMA Supercross and others choose JE Pistons over any other brand. For over 60 years, JE’s position 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, JE is able to maintain exacting specifications on each and every piston and hold tolerances to millionths of an inch.


Brand JE Pistons

Pistons Included in Kit 2

Displacement 843cc

Bore Size (Kit) 93mm Oversize +2mm

Compression Ratio 11.5:1

Weight (Grams) 338g

Skirt Style Round

Alloy 2618 Forged Aluminum

Recommended Rings JE Pistons #: JG1001-3661 Rings Included: Yes