K3-6653-3935-4.0-AMC/Jeep 6 Cyl. FXK3 Series -21cc Dish Top No Notch Jeep-Forged-Piston-Set- 3.935 inch bore
K3-6653-3935-4.0-AMC/Jeep 6 Cyl. FXK3 Series -21cc Dish Top No Notch Jeep-Forged-Piston-Set- 3.935 inch bore
K3-6653-3935-4.0-AMC/Jeep 6 Cyl. FXK3 Series -21cc Dish Top No Notch Jeep-Forged-Piston-Set- 3.935 inch bore
K3-6653-3935-4.0-AMC/Jeep 6 Cyl. FXK3 Series -21cc Dish Top No Notch Jeep-Forged-Piston-Set- 3.935 inch bore
Load image into Gallery viewer, K3-6653-3935-4.0-AMC/Jeep 6 Cyl. FXK3 Series -21cc Dish Top No Notch Jeep-Forged-Piston-Set- 3.935 inch bore
Load image into Gallery viewer, K3-6653-3935-4.0-AMC/Jeep 6 Cyl. FXK3 Series -21cc Dish Top No Notch Jeep-Forged-Piston-Set- 3.935 inch bore
Load image into Gallery viewer, K3-6653-3935-4.0-AMC/Jeep 6 Cyl. FXK3 Series -21cc Dish Top No Notch Jeep-Forged-Piston-Set- 3.935 inch bore
Load image into Gallery viewer, K3-6653-3935-4.0-AMC/Jeep 6 Cyl. FXK3 Series -21cc Dish Top No Notch Jeep-Forged-Piston-Set- 3.935 inch bore

SKU: K3-6653-3935

K3-6653-3935-4.0-AMC/Jeep 6 Cyl. FXK3 Series -21cc Dish Top No Notch Jeep-Forged-Piston-Set- 3.935 inch bore

$1,104.95
$1,104.95
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Ships in 1 - 8 days

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Made in the USA

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

251 AMC/Jeep 6 Cyl. FX Comp Height: 1.592-21cc Dish Top No Notch PIN: 0.931 Ring Groove: 1.5/1.5/4MM Stroke: 3.44 ROD: 6.125 Full-Floating or Press Fit Includes matching DSS Racing ring set 52cc-1.59, 55cc-1.56, 58cc-1.54 2618 Alloy


Engine Brand: Jeep

Engine Family: AMC/Jeep 6 Cyl.

Engine Size: 4.0

With/Without Rings: Includes Rings

Cylinder Bore Size: 3.935 in , 99.870 mm

Ring Width: 1.5/1.5/4MM

Compression Height: 1.592

Pin Diameter: 0.931

Connecting Rod Length: 6.125

Crankshaft Stroke: 3.440

Piston Series: 3 - FX 2618 Alloy Gas Ports, XP Pin Upgrade, Spiral Locks

Alloy: 2618 Alloy

Cylinder Head: Jeep

TDC Assembly Height: 9.437

Piston Top Aprox. Comp. Ratio:

-21cc Dish Top No Notch Jeep
ChamberComp Ratio
521.59 to 1
551.56 to 1
581.54 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: 3.935 in , 99.870 mm

Ring Width: 1.5/1.5/4MM

Compression Height: 1.592

Pin Diameter: 0.931

Connecting Rod Length: 6.125

Crankshaft Stroke: 3.440

Piston Series: 3 - FX 2618 Alloy Gas Ports, XP Pin Upgrade, Spiral Locks

Alloy: 2618 Alloy

Cylinder Head: Jeep

TDC Assembly Height: 9.437

Piston Top Aprox. Comp. Ratio:

-21cc Dish Top No Notch Jeep
ChamberComp Ratio
521.59 to 1
551.56 to 1
581.54 to 1

Download Piston Instructions

Engine Power TV

The DSS FX, X-Groove Feature