big bore pistons for knucklehead, panhead and shovelheads 3 5/8"
keith balck forged big bore pistons 3 5/8"

Keith Black Forged Pistons 3 5/8″

$225.00

Keith Black big bore 3 5/8″ forged pistons 9.5 to 1 compression ratio.

For 4 1/4″ to 4 3/4″ strokes

Sizes: Standard, +.005″, +.010″ over sizes available.

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Description

Forged 4032 alloy pistons for 3 5/8″ big bore Knuckle, Pan and Shovel engines.
Good for strokes from 4 1/4″ to 4 3/4″ or 88 to 96 cubic inch engines
General compression ratio of 9.5 to 1. This ratio will of course vary with the stroke of the engine. It is always best to oil the engine out to see what you really have.

Sizes Available are STD, +.005″, +.010″

Additional information

size

std, +.005", +.010"

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