D.S.S. FX-Series Forged Piston and Ring Kits with XR Wrist Pins K3-6590-4090

Name: D.S.S. FX-Series Forged Piston and Ring Kits with XR Wrist Pins
Brand: DSS Racing
SKU: DMS-K3-6590-4090
Price: 1054.95 USD
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Part Number: DMS-K3-6590-4090

$1,054.95

D.S.S. FX-Series Forged Piston and Ring Kits with XR Wrist Pins

Pistons, Rings, FX-Series, XR Wrist Pins, Forged, 1.50cc Flat, 4.090 in. Bore, Mopar Gen III Hemi, Set of 8
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D.S.S. FX-Series Forged Piston and Ring Kits with XR Wrist Pins K3-6590-4090

DMS-K3-6590-4090

Not Yet Reviewed

Part Number: DMS-K3-6590-4090

Estimated Ship Date: Apr 6, 2026

$1,054.95

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Estimated Ship Date: Apr 6, 2026 Would you rather pick it up?

Overview

Brand:

DSS Racing

Manufacturer's Part Number:

K3-6590-4090

Part Type:

Pistons

Product Line:

D.S.S. FX-Series Forged Piston and Ring Kits with XR Wrist Pins

Summit Racing Part Number:

DMS-K3-6590-4090

UPC:

194403060935

Piston Rings Included:

Yes

Bore (in.):

4.090 in.

Bore (mm):

103.886mm

Stroke:

3.720 in.

Engine Stroke Type:

Stock

Rod Length:

6.200 in.

Piston Style:

Flat top, with two valve reliefs

Piston Material:

Forged aluminum

Compression Height (in.):

1.210 in.

Piston Head Volume (cc):

+1.50cc

Wrist Pin Style:

Floating

Wrist Pin Retainers Included:

Yes

Wrist Pin Included:

Yes

Pin Diameter (in.):

0.945 in.

Piston Ring Thickness:

1.20mm x 1.20mm x 3.00mm

File Fit:

Yes

Gapless:

Remanufactured:

Quantity:

Sold as a set of 8.

D.S.S. FX-Series Forged Piston and Ring Kits with XR Wrist Pins

Pushing the envelope on your engine combination? Need parts that will stand up to the demands of today's power levels? DSS FX Series pistons increase your horsepower potential without killing the budget. Forged and machined with premium aircraft quality 2618 alloy with horizontal gas porting, these pistons are a great choice for naturally aspirated, nitrous, or boosted engines with the added strength from the internal gussets. Additional CNC milling removes material in non-critical areas to achieve a lighter weight for the perfect balance of strength, power and longevity. Kit includes a DSS XP piston ring set featuring gas nitrided steel top rings, Napier second rings, and flex vent oil rings.

FX Series pistons feature the patented X Groove skirt design which reduces damage caused by fuel wash down and break-in debris for superior skirt, cylinder and ring life. For stroker engines, the advanced skirt design improves piston stability and ring seal which provides quieter operation.

Features include:

* Forced pin oiling
* Drilled bottom land intersecting oil groove drain backs
* Pin lock ring removal slot
* Precision honed piston pin bores
* XR Extreme duty wrist pins
* Deep CNC valve reliefs
* Horizontal gas porting