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Single Piston and Ring Kit, Forged Aluminum, 4.125 in. Bore, AMC, Single Piston, Each
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Estimated Ship Date: Oct 26, 2026 Would you rather pick it up?
Overview
Brand:
Manufacturer's Part Number:
5539A45
Part Type:
Product Line:
Summit Racing Part Number:
WIS-5539A45
UPC:
00193564095176
Piston Rings Included:
Yes
Bore (in.):
4.125 in.
Bore (mm):
104.775mm
Stroke:
3.440 in.
Actual Engine Displacement:
6.0L/368
Rod Length:
5.875 in.
Piston Style:
Flat top, with two valve reliefs
Piston Material:
Forged aluminum
Compression Height (in.):
1.590 in.
Piston Head Volume (cc):
+8.60cc
Wrist Pin Style:
Press-fit or floating
Wrist Pin Retainers Included:
Yes
Wrist Pin Included:
Yes
Pin Diameter (in.):
0.930 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:
Cast iron
Second Ring Facing Material:
Phosphate coated
Oil Ring Thickness:
3/16 in.
Oil Ring Material:
Carbon steel
Oil Ring Facing Material:
Chrome
Oil Ring Tension:
Standard
Remanufactured:
No
Quantity:
Sold individually.
Wiseco Pro Tru Street Pistons
Are you looking for affordable high performance for your street machine? Wiseco Pro Tru Street pistons are right up your alley! These forged 4032 aluminum pistons are complete with chromium alloy steel piston pins and Spirolox. Oversized, symmetrical, radiused valve pockets allow for maximum flow around the valves during overlap—and accommodate oversized valves and high-lift cams. Wiseco's proprietary ArmorGlide skirt coating extends piston life, increases horsepower, reduces noise, and offers much tighter dimensional tolerances than typical spray-on coatings. Choose the set designed for your vehicle and engine application. World-class, precision-machined high performance pistons—that's Wiseco value!
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Some parts are not legal for use in California or other states with similar laws / regulations
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