D.S.S. FX-Series Forged 4032 Alloy Piston and Ring Kits K1-3251-4125C

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Part Number: DMS-K132514125C

$937.95

-5cc Flat Top SBF 20 Degree Inline & Twisted Wedge Forged 4032
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D.S.S. FX-Series Forged 4032 Alloy Piston and Ring Kits K1-3251-4125C

D.S.S. FX-Series Forged 4032 Alloy Piston and Ring Kits K1-3251-4125C

DMS-K132514125C

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Part Number: DMS-K132514125C

Estimated Ship Date: Mar 5, 2026

$937.95

Estimated Ship Date: Mar 5, 2026 Would you rather pick it up?

Overview

Brand:
Manufacturer's Part Number:
K1-3251-4125C
Part Type:
Product Line:
Summit Racing Part Number:
DMS-K132514125C
UPC:
194403274806
Piston Rings Included:
Yes
Bore (in.):
4.125 in.
Bore (mm):
104.775mm
Stroke:
4.250 in.
Engine Stroke Type:
Stroked
Actual Engine Displacement:
7.4L/454
Rod Length:
6.200 in.
Piston Style:
Flat top, with three valve reliefs
Piston Material:
Forged aluminum
Compression Height (in.):
1.165 in.
Piston Head Volume (cc):
+5.00cc
Wrist Pin Style:
Press-fit or floating
Wrist Pin Retainers Included:
Yes
Wrist Pin Included:
Yes
Pin Diameter (in.):
0.927 in.
Piston Ring Thickness:
1.20mm x 1.20mm x 3.00mm
File Fit:
No
Gapless:
No
Top Ring Thickness:
1.2mm
Top Ring Material:
Stainless steel
Top Ring Facing Material:
Gas nitrided
Second Ring Thickness:
1.2mm
Second Ring Material:
Iron
Second Ring Facing Material:
Iron
Oil Ring Thickness:
3.0mm
Oil Ring Material:
Stainless steel
Oil Ring Tension:
Standard
Remanufactured:
No
Quantity:
Sold as a set of 8.
Notes:
For use with TFS Twisted Wedge cylinder heads or cylinder heads with 20 degree inline valves.

D.S.S. FX-Series Forged 4032 Alloy Piston and Ring Kits

D.S.S. Competition Engine offers FX-Series forged 4032 aluminum alloy piston and ring kits for a wide range of Chevy engine applications from the 1960s and up. The pistons are available in flat top, dish, and dome styles—in countless size and performance options. For your convenience, these sets include corresponding piston rings for a turnkey installation.

FX-Series forged 4032 alloy pistons increase your horsepower potential without breaking the budget. Forged and machined with premium aircraft-quality 4032 alloy, the 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. FX-Series pistons feature a 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. Order the set recommended for your year/make and engine application.

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