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Diamond Pistons Race Series Pistons
SB Chevy DS 4.165B/1.062CD NS
See More Specifications
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Estimated Ship Date: Dec 7, 2026 Would you rather pick it up?
Overview
Brand:
Manufacturer's Part Number:
11440
Part Type:
Product Line:
Summit Racing Part Number:
DPP-11440
UPC:
193564372789
Piston Rings Included:
Yes
Bore (in.):
4.165 in.
Bore (mm):
105.791mm
Stroke:
3.875 in.
Engine Stroke Type:
Stroked
Actual Engine Displacement:
6.9L/422
Rod Length:
6.000 in.
Piston Style:
Dish, with single valve relief
Piston Material:
Forged aluminum
Compression Height (in.):
1.062 in.
Piston Head Volume (cc):
+38.00cc
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:
Stainless steel
Top Ring Facing Material:
C-23 PVD Chrome
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. Includes H-13 wrist pins.
Diamond Pistons Race Series Pistons
Diamond Pistons Race Series pistons will withstand some serious horsepower for your high performance engine. These 2618 aluminum pistons are not only significantly lighter than the factory pistons but also superior in strength. The 2618 alloy is specifically for high-horsepower, nitrous, and boosted engines making up to 2,000 hp.
Diamond Pistons Race Series pistons feature:
* 3D milling on piston crowns for "ready to install" finish
* Inside design forging with fully machined underskirts for maximum strength
* Valve pockets designed to work with most aftermarket cylinder heads
* Side gas ports for better ring seal
* Moly skirt coating for friction-loss and skirt-wear protection
* Premium H-13 wrist pins included; chamfered for round wire locks
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