1-6653-3935-4.0-AMC/Jeep 6 Cyl. FX1 Series -21cc Dish Top No Notch Jeep-Forged-Piston-Set- 3.935 inch bore
1-6653-3935-4.0-AMC/Jeep 6 Cyl. FX1 Series -21cc Dish Top No Notch Jeep-Forged-Piston-Set- 3.935 inch bore
1-6653-3935-4.0-AMC/Jeep 6 Cyl. FX1 Series -21cc Dish Top No Notch Jeep-Forged-Piston-Set- 3.935 inch bore
1-6653-3935-4.0-AMC/Jeep 6 Cyl. FX1 Series -21cc Dish Top No Notch Jeep-Forged-Piston-Set- 3.935 inch bore
Load image into Gallery viewer, 1-6653-3935-4.0-AMC/Jeep 6 Cyl. FX1 Series -21cc Dish Top No Notch Jeep-Forged-Piston-Set- 3.935 inch bore
Load image into Gallery viewer, 1-6653-3935-4.0-AMC/Jeep 6 Cyl. FX1 Series -21cc Dish Top No Notch Jeep-Forged-Piston-Set- 3.935 inch bore
Load image into Gallery viewer, 1-6653-3935-4.0-AMC/Jeep 6 Cyl. FX1 Series -21cc Dish Top No Notch Jeep-Forged-Piston-Set- 3.935 inch bore
Load image into Gallery viewer, 1-6653-3935-4.0-AMC/Jeep 6 Cyl. FX1 Series -21cc Dish Top No Notch Jeep-Forged-Piston-Set- 3.935 inch bore

SKU: 1-6653-3935

1-6653-3935-4.0-AMC/Jeep 6 Cyl. FX1 Series -21cc Dish Top No Notch Jeep-Forged-Piston-Set- 3.935 inch bore

$599.95
$599.95
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Ships in 1 - 8 days

Made in the USA

Made in the USA

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This is a pre order item. We will ship it when it comes in stock.

4.0 AMC/Jeep 6 Cyl. FX Comp Height: 1.592 -21cc Dish Top No Notch PIN: .931 Ring Groove: 1.5/1.5/4MM Stroke: 3.44 ROD: 6.125 Forged and Machined in Saint Charles Illinois USA! Boost and NOS Ready! (Moderate to High Levels) Comp Ratio: 52cc-9.47, 55cc-9.16, 58cc-8.88


Engine Brand: Jeep

Engine Family: AMC/Jeep 6 Cyl.

Engine Size: 4.0

With/Without Rings: Without Rings

Cylinder Bore Size: 3.935 in - 99.87 mm

Ring Width: 1.5/1.5/4MM

Compression Height: 1.592

Pin Diameter: .931

Connecting Rod Length: 6.125 in

Crankshaft Stroke: 3.440 in

Piston Series: 1 - FX Series

Alloy: Forged 4032

Cylinder Head: Jeep

TDC Assembly Height: 9.437

Piston Top Aprox. Comp. Ratio:

-21cc Dish Top No Notch Jeep
ChamberComp Ratio
52cc9.47 to 1
55cc9.16 to 1
58cc8.88 to 1

Download Piston Instructions

Piston Specs

Engine Brand: Jeep

Engine Family: AMC/Jeep 6 Cyl.

Engine Size: 4.0

With/Without Rings: Without Rings

Cylinder Bore Size: 3.935 in - 99.87 mm

Ring Width: 1.5/1.5/4MM

Compression Height: 1.592

Pin Diameter: .931

Connecting Rod Length: 6.125 in

Crankshaft Stroke: 3.440 in

Piston Series: 1 - FX Series

Alloy: Forged 4032

Cylinder Head: Jeep

TDC Assembly Height: 9.437

Piston Top Aprox. Comp. Ratio:

-21cc Dish Top No Notch Jeep
ChamberComp Ratio
52cc9.47 to 1
55cc9.16 to 1
58cc8.88 to 1

Download Piston Instructions

Engine Power TV

The DSS FX, X-Groove Feature