Attributes

Key Value
Bore (in.)4.500 in.
Bore (mm)114.300mm
BrandKB
Compression Height (in.)1.270 in.
Engine Stroke TypeStroked
File FitNo
GaplessNo
Manufacturer's Part.KB389.034
NotesStep dish design. Space.
Part TypePistons
Pin Diameter (in.)0.990 in.
Piston Head Volume (cc)+10.00cc
Piston MaterialHypereutectic aluminum
Piston Ring Thickness1/16 in. x 1/16 in. x 3.
Piston Rings IncludedNo
Piston StyleStep head, with single .
Product LineKB Performance Pistons
QuantitySold as a set of 8.
Rod Length6.385 in.
Stroke4.250 in.
Summit Racing Part Numb.UEM-KB389-034
UPC800745113634
Wrist Pin IncludedYes
Wrist Pin Retainers Inc.Yes
Wrist Pin StylePress-fit or floating
© 2025 · Data Alchemy · Version 60 · ts:1760052239
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