Load image into Gallery viewer, 1-6840-4075D-6.1-Small Block Mopar Hemi Gen III FX1 Series -1.5cc  Flat Top  Gen III Hemi-Forged-Piston-Set- 4.075 inch bore
Load image into Gallery viewer, 1-6840-4075D-6.1-Small Block Mopar Hemi Gen III FX1 Series -1.5cc  Flat Top  Gen III Hemi-Forged-Piston-Set- 4.075 inch bore
Load image into Gallery viewer, 1-6840-4075D-6.1-Small Block Mopar Hemi Gen III FX1 Series -1.5cc  Flat Top  Gen III Hemi-Forged-Piston-Set- 4.075 inch bore
Load image into Gallery viewer, 1-6840-4075D-6.1-Small Block Mopar Hemi Gen III FX1 Series -1.5cc  Flat Top  Gen III Hemi-Forged-Piston-Set- 4.075 inch bore

SKU: 1-6840-4075D

1-6840-4075D-6.1-Small Block Mopar Hemi Gen III FX1 Series -1.5cc Flat Top Gen III Hemi-Forged-Piston-Set- 4.075 inch bore

Regular price $669.95
Sale price $669.95 Regular price
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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.

6.1 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: 3.578 ROD: 6.243 Forged and Machined in Saint Charles Illinois USA! Boost and NOS Ready! (Moderate to High Levels) Comp Ratio: 65cc-11.18, 74cc-10.09, 85cc-9.04


Engine Brand: Mopar

Engine Family: Small Block Mopar Hemi Gen III

Engine Size: 6.1

With/Without Rings: Without Rings

Cylinder Bore Size: 4.075 in - 103.42 mm

Ring Width: 1.2/1.2/3MM

Compression Height: 1.210

Pin Diameter: .927

Connecting Rod Length: 6.243 in

Crankshaft Stroke: 3.578 in

Piston Series: 1 - FX Series

Alloy: Forged 4032

Cylinder Head: Gen III Hemi

TDC Assembly Height: 9.242

Piston Top Aprox. Comp. Ratio:

-1.5cc Flat Top Gen III Hemi
ChamberComp Ratio
65cc11.18 to 1
74cc10.09 to 1
85cc9.04 to 1

Download Piston Instructions

Piston Specs

Engine Brand: Mopar

Engine Family: Small Block Mopar Hemi Gen III

Engine Size: 6.1

With/Without Rings: Without Rings

Cylinder Bore Size: 4.075 in - 103.42 mm

Ring Width: 1.2/1.2/3MM

Compression Height: 1.210

Pin Diameter: .927

Connecting Rod Length: 6.243 in

Crankshaft Stroke: 3.578 in

Piston Series: 1 - FX Series

Alloy: Forged 4032

Cylinder Head: Gen III Hemi

TDC Assembly Height: 9.242

Piston Top Aprox. Comp. Ratio:

-1.5cc Flat Top Gen III Hemi
ChamberComp Ratio
65cc11.18 to 1
74cc10.09 to 1
85cc9.04 to 1

Download Piston Instructions

Engine Power TV

The DSS FX, X-Groove Feature