Load image into Gallery viewer, K3-6653-3915-4.0-AMC/Jeep 6 Cyl. FXK3 Series -21cc Dish Top No Notch Jeep-Forged-Piston-Set- 3.915 inch bore
Load image into Gallery viewer, K3-6653-3915-4.0-AMC/Jeep 6 Cyl. FXK3 Series -21cc Dish Top No Notch Jeep-Forged-Piston-Set- 3.915 inch bore
Load image into Gallery viewer, K3-6653-3915-4.0-AMC/Jeep 6 Cyl. FXK3 Series -21cc Dish Top No Notch Jeep-Forged-Piston-Set- 3.915 inch bore
Load image into Gallery viewer, K3-6653-3915-4.0-AMC/Jeep 6 Cyl. FXK3 Series -21cc Dish Top No Notch Jeep-Forged-Piston-Set- 3.915 inch bore

SKU: K3-6653-3915

K3-6653-3915-4.0-AMC/Jeep 6 Cyl. FXK3 Series -21cc Dish Top No Notch Jeep-Forged-Piston-Set- 3.915 inch bore

Regular price $1,104.95
Sale price $1,104.95 Regular price
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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 Extreme Levels) Boost and NOS Ready! (Moderate to High Levels) Includes matching DSS Racing XP Severe Duty ring set. Comp Ratio: 52cc-9.37, 55cc-9.07, 58cc-8.80


Engine Brand: Jeep

Engine Family: AMC/Jeep 6 Cyl.

Engine Size: 4.0

With/Without Rings: Includes Rings

Cylinder Bore Size: 3.915 in - 99.36 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: 3 - FX Series

Alloy: Forged 2618

Cylinder Head: Jeep

TDC Assembly Height: 9.437

Piston Top Aprox. Comp. Ratio:

-21cc Dish Top No Notch Jeep
ChamberComp Ratio
52cc9.37 to 1
55cc9.07 to 1
58cc8.8 to 1

Download Piston Instructions

Piston Specs

Engine Brand: Jeep

Engine Family: AMC/Jeep 6 Cyl.

Engine Size: 4.0

With/Without Rings: Includes Rings

Cylinder Bore Size: 3.915 in - 99.36 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: 3 - FX Series

Alloy: Forged 2618

Cylinder Head: Jeep

TDC Assembly Height: 9.437

Piston Top Aprox. Comp. Ratio:

-21cc Dish Top No Notch Jeep
ChamberComp Ratio
52cc9.37 to 1
55cc9.07 to 1
58cc8.8 to 1

Download Piston Instructions

Engine Power TV

The DSS FX, X-Groove Feature