1-5000-4080-390-FE Ford FX1 Series -5cc Flat Top FE Ford-Forged-Piston-Set- 4.08 inch bore
1-5000-4080-390-FE Ford FX1 Series -5cc Flat Top FE Ford-Forged-Piston-Set- 4.08 inch bore
1-5000-4080-390-FE Ford FX1 Series -5cc Flat Top FE Ford-Forged-Piston-Set- 4.08 inch bore
1-5000-4080-390-FE Ford FX1 Series -5cc Flat Top FE Ford-Forged-Piston-Set- 4.08 inch bore
Load image into Gallery viewer, 1-5000-4080-390-FE Ford FX1 Series -5cc Flat Top FE Ford-Forged-Piston-Set- 4.08 inch bore
Load image into Gallery viewer, 1-5000-4080-390-FE Ford FX1 Series -5cc Flat Top FE Ford-Forged-Piston-Set- 4.08 inch bore
Load image into Gallery viewer, 1-5000-4080-390-FE Ford FX1 Series -5cc Flat Top FE Ford-Forged-Piston-Set- 4.08 inch bore
Load image into Gallery viewer, 1-5000-4080-390-FE Ford FX1 Series -5cc Flat Top FE Ford-Forged-Piston-Set- 4.08 inch bore

SKU: 1-5000-4080

1-5000-4080-390-FE Ford FX1 Series -5cc Flat Top FE Ford-Forged-Piston-Set- 4.08 inch bore

$669.95
$669.95
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Ships in 1 - 8 days

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.

390 FE Ford FX Comp Height: 1.775 -5cc Flat Top PIN: .975 Ring Groove: 1/16-1/16-3/16" Stroke: 3.784 ROD: 6.489 Forged and Machined in Saint Charles Illinois USA! Boost and NOS Ready! (Moderate to High Levels) Comp Ratio: 65cc-11.32, 72cc-10.48, 76cc-10.06


Engine Brand: Ford

Engine Family: FE Ford

Engine Size: 390

With/Without Rings: Without Rings

Cylinder Bore Size: 4.080 in - 103.55 mm

Ring Width: 1/16-1/16-3/16"

Compression Height: 1.775

Pin Diameter: .975

Connecting Rod Length: 6.489 in

Crankshaft Stroke: 3.784 in

Piston Series: 1 - FX Series

Alloy: Forged 4032

Cylinder Head: FE Ford

TDC Assembly Height: 10.156

Piston Top Aprox. Comp. Ratio:

-5cc Flat Top FE Ford
ChamberComp Ratio
65cc11.32 to 1
72cc10.48 to 1
76cc10.06 to 1

Download Piston Instructions

Piston Specs

Engine Brand: Ford

Engine Family: FE Ford

Engine Size: 390

With/Without Rings: Without Rings

Cylinder Bore Size: 4.080 in - 103.55 mm

Ring Width: 1/16-1/16-3/16"

Compression Height: 1.775

Pin Diameter: .975

Connecting Rod Length: 6.489 in

Crankshaft Stroke: 3.784 in

Piston Series: 1 - FX Series

Alloy: Forged 4032

Cylinder Head: FE Ford

TDC Assembly Height: 10.156

Piston Top Aprox. Comp. Ratio:

-5cc Flat Top FE Ford
ChamberComp Ratio
65cc11.32 to 1
72cc10.48 to 1
76cc10.06 to 1

Download Piston Instructions

Engine Power TV

The DSS FX, X-Groove Feature