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Pistons, Premium, Forged 2618 Aluminum, 4.040 in. Bore, 3.875 in. Stroke, Flat Top, Right Side, Chevy, Small Block, Each
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Estimated Ship Date: Apr 20, 2026 Would you rather pick it up?
Overview
Brand:
Manufacturer's Part Number:
SIC978R.040
Part Type:
Product Line:
Summit Racing Part Number:
UEM-SIC978R-040
UPC:
800745227515
Piston Rings Included:
No
Bore (in.):
4.040 in.
Bore (mm):
102.616mm
Stroke:
3.875 in.
Engine Stroke Type:
Stroked
Actual Engine Displacement:
6.5L/397
Rod Length:
6.000 in.
Piston Style:
Flat top, with two valve reliefs
Piston Material:
Forged aluminum
Compression Height (in.):
1.062 in.
Piston Head Volume (cc):
+6.30cc
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:
1.50mm x 1.50mm x 3.00mm
File Fit:
No
Gapless:
No
Top Ring Thickness:
1.5mm
Second Ring Thickness:
1.5mm
Oil Ring Thickness:
3.0mm
Remanufactured:
No
Quantity:
Sold individually.
Notes:
Pistons are made of forged 2618 alloy aluminum.
ICON Premium Forged Pistons
ICON premium forged pistons are made from high-strength, heat-treated aluminum alloy. They feature a diamond-machined skirt, head, mini-grooves, pin bore, gas accumulator, ring grooves, and pressure-drilled pin hole oiling. The pistons have a V-rib design for light weight, strength, and maximum piston cooling. Compare weight, performance, design, and cost—and you will win with ICON!
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Some parts are not legal for use in California or other states with similar laws / regulations
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