D.S.S. FX-Series Forged 4032 Alloy Piston and Ring Kits K1-3820-4125

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Part Number: DMS-K1-3820-4125

$937.95

Piston Set, 412C / Boss Stroker SBF 351C K1-FX Series -3cc Flat Top Boss/Canted Piston Set. 4.125 bore
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D.S.S. FX-Series Forged 4032 Alloy Piston and Ring Kits K1-3820-4125

D.S.S. FX-Series Forged 4032 Alloy Piston and Ring Kits K1-3820-4125

DMS-K1-3820-4125

Not Yet Reviewed

Part Number: DMS-K1-3820-4125

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:
K1-3820-4125
Part Type:
Product Line:
Summit Racing Part Number:
DMS-K1-3820-4125
UPC:
00194403168273
Piston Rings Included:
Yes
Bore (in.):
4.125 in.
Bore (mm):
104.775mm
Stroke:
3.850 in.
Engine Stroke Type:
Stroked
Actual Engine Displacement:
6.8L/412
Rod Length:
6.000 in.
Piston Style:
Flat top, with two valve reliefs
Piston Material:
Forged aluminum
Compression Height (in.):
1.265 in.
Piston Head Volume (cc):
+3.00cc
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:
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.

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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