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KB Pistons Harley-Davidson M-8 114/117 ci to 128 ci Conversion [4.250in.]
InfoVehicle Info Needed
UNITED ENGINE MACHINEPART NUMBER: 648-KB596LCA.STD

KB Pistons Harley-Davidson M-8 114/117 ci to 128 ci Conversion [4.250in.]

$30654
ShippingShips on 10/05/2026
Lowest PriceLowest Price Guarantee

Harley-Davidson [Milwaukee-8]
Harley-Davidson (HD) KB Conversion Pistons
  • Aftermarket 4.250 in. Big Bore Cylinders
  • Current Milwaukee-8 (M-8) Engines
  • 114 or 117 ci to 128 ci Conversion
  • Includes Rings, Wrist Pins, and Locks
  • 4032 Forged Aluminum
  • Pair

    KB Motorcycle Pistons by UEM KB596LCA.STD Features and Specifications:

    • Harley Davidson Milwaukee-8 Oil and Water Cooled Engines
    • Cubic Inch: 128
    • Bore: 4.255 in.
    • Stroke: 4.500 in.
    • Compression Height: 1.083 in.
    • Dome Volume: 2.5 cc
    • Compression Ratio: 11.7 w/88.6 cc Head
    • Valve Reliefs Machined for up to 3 mm Valves
    • Type 3 Hard Anodized Crown and Top Ring Groove
    • LINE2LINE Abradable Skirt Coating
    • Part TypePiston
    BrandUNITED ENGINE MACHINE
    Package Height5.75
    Package Width5.75
    Package Length6.15
    Weight3.21 PG
    Part CategoryPerformance Parts
    Piston Head Volume (Cc)-2.5
    Compression Distance1.083 in.
    Piston Ring Thickness (In.)1.50mm x 1.50mm x 3.00mm
    Wrist Pin StyleFloating
    QuantitySold as a pair
    Piston MaterialForged
    Part FitmentSemi Universal
    Rod Length8.015 in.
    Bore4.25 in (108 mm)
    Vendor Part NumberKB596LCA.STD
    Package Qty1
    Package TypeEA
    No Questions
    No Reviews

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