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Diamond Pistons Domestic Series Pistons
SB Chevy DM 4.125B/1.250CD NS
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Estimated Ship Date: Apr 13, 2026 Would you rather pick it up?
Overview
Brand:
Manufacturer's Part Number:
11750
Part Type:
Product Line:
Summit Racing Part Number:
DPP-11750
UPC:
193564376077
Piston Rings Included:
Yes
Bore (in.):
4.125 in.
Bore (mm):
104.775mm
Stroke:
3.480 in.
Engine Stroke Type:
Stock/De-Stroked
Actual Engine Displacement:
6.1L/372
Rod Length:
6.000 in.
Piston Style:
Dome, with two valve reliefs
Piston Material:
Forged aluminum
Compression Height (in.):
1.250 in.
Piston Head Volume (cc):
-13.70cc
Wrist Pin Style:
Floating
Wrist Pin Retainers Included:
Yes
Wrist Pin Included:
Yes
Pin Diameter (in.):
0.927 in.
Piston Ring Thickness:
1/16 in. x 1/16 in. x 3/16 in.
File Fit:
Yes
Gapless:
No
Top Ring Thickness:
1/16 in.
Top Ring Material:
Ductile iron
Top Ring Facing Material:
Plasma-moly
Second Ring Thickness:
1/16 in.
Second Ring Material:
Ductile iron
Second Ring Facing Material:
Ductile iron
Oil Ring Thickness:
3/16 in.
Oil Ring Material:
Stainless steel
Oil Ring Tension:
Standard
Remanufactured:
No
Quantity:
Sold individually.
Notes:
Pistons are 2618 material.
Diamond Pistons Domestic Series Pistons
Diamond Pistons Domestic Series pistons are designed and tested for the high-stresses seen with high-compression, forced induction, or nitrous-fed domestic engines. Engineered with longevity, reliability, and strength, these forged aluminum pistons are specifically designed for your engine to deliver the results you demand.
Diamond Piston Domestic Series pistons feature:
* 3D milling on piston crowns for "ready-to-install" finish
* Generous valve pockets designed to work with stock or oversized valves and various cylinder heads
* Constructed from forged 4032 or 2618 aluminum alloy (where specified)
* Premium 8620 or H-13 steel wrist pins (where specified)
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