K1-6840-4125C-392 - 6.4-Small Block Mopar Hemi Gen III FXK1 Series -1.5cc Flat Top Gen III Hemi-Forged-Piston-Set- 4.125 inch bore
K1-6840-4125C-392 - 6.4-Small Block Mopar Hemi Gen III FXK1 Series -1.5cc Flat Top Gen III Hemi-Forged-Piston-Set- 4.125 inch bore
K1-6840-4125C-392 - 6.4-Small Block Mopar Hemi Gen III FXK1 Series -1.5cc Flat Top Gen III Hemi-Forged-Piston-Set- 4.125 inch bore
K1-6840-4125C-392 - 6.4-Small Block Mopar Hemi Gen III FXK1 Series -1.5cc Flat Top Gen III Hemi-Forged-Piston-Set- 4.125 inch bore
Load image into Gallery viewer, K1-6840-4125C-392 - 6.4-Small Block Mopar Hemi Gen III FXK1 Series -1.5cc Flat Top Gen III Hemi-Forged-Piston-Set- 4.125 inch bore
Load image into Gallery viewer, K1-6840-4125C-392 - 6.4-Small Block Mopar Hemi Gen III FXK1 Series -1.5cc Flat Top Gen III Hemi-Forged-Piston-Set- 4.125 inch bore
Load image into Gallery viewer, K1-6840-4125C-392 - 6.4-Small Block Mopar Hemi Gen III FXK1 Series -1.5cc Flat Top Gen III Hemi-Forged-Piston-Set- 4.125 inch bore
Load image into Gallery viewer, K1-6840-4125C-392 - 6.4-Small Block Mopar Hemi Gen III FXK1 Series -1.5cc Flat Top Gen III Hemi-Forged-Piston-Set- 4.125 inch bore

SKU: K1-6840-4125C

K1-6840-4125C-392 - 6.4-Small Block Mopar Hemi Gen III FXK1 Series -1.5cc Flat Top Gen III Hemi-Forged-Piston-Set- 4.125 inch bore

$834.95
$834.95
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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.

392 - 6.4 Small Block Mopar Hemi Gen III FX Comp Height: 1.21 -1.5cc Flat Top PIN: .927 Ring Groove: 1.2/1.2/3MM Stroke: 3.72 ROD: 6.2 Forged and Machined in Saint Charles Illinois USA! Boost and NOS Ready! (Moderate to High Levels) Includes matching DSS Racing Ductile Moly ring set. Comp Ratio: 65cc-11.83, 74cc-10.68, 85cc-9.56


Engine Brand: Mopar

Engine Family: Small Block Mopar Hemi Gen III

Engine Size: 392 - 6.4

With/Without Rings: Includes Rings

Cylinder Bore Size: 4.125 in - 104.69 mm

Ring Width: 1.2/1.2/3MM

Compression Height: 1.210

Pin Diameter: .927

Connecting Rod Length: 6.200 in

Crankshaft Stroke: 3.720 in

Piston Series: 1 - FX Series

Alloy: Forged 4032

Cylinder Head: Gen III Hemi

TDC Assembly Height: 9.27

Piston Top Aprox. Comp. Ratio:

-1.5cc Flat Top Gen III Hemi
ChamberComp Ratio
65cc11.83 to 1
74cc10.68 to 1
85cc9.56 to 1

Download Piston Instructions

Piston Specs

Engine Brand: Mopar

Engine Family: Small Block Mopar Hemi Gen III

Engine Size: 392 - 6.4

With/Without Rings: Includes Rings

Cylinder Bore Size: 4.125 in - 104.69 mm

Ring Width: 1.2/1.2/3MM

Compression Height: 1.210

Pin Diameter: .927

Connecting Rod Length: 6.200 in

Crankshaft Stroke: 3.720 in

Piston Series: 1 - FX Series

Alloy: Forged 4032

Cylinder Head: Gen III Hemi

TDC Assembly Height: 9.27

Piston Top Aprox. Comp. Ratio:

-1.5cc Flat Top Gen III Hemi
ChamberComp Ratio
65cc11.83 to 1
74cc10.68 to 1
85cc9.56 to 1

Download Piston Instructions

Engine Power TV

The DSS FX, X-Groove Feature