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Keith Black Performance Hypereutectic Piston Kits

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  • Keith Black Performance Hypereutectic Piston Kits
Product may vary from photo(s).

$202.99

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J&P Part: 744-381

Description

Keith Black Performance Hypereutectic Piston Kits

Fitment Note: Also fits 2007-13 96" models converted to a 103" big Bore kit.

• Manufactured from high-strength, T-5, heat-treated, 390 hypereutectic aluminum alloy

• Allow a tighter fit, longer piston and ring life

• Diamond-machined pistons are held to plus or minus on gram weight and less than .005" tolerances between pistons

• Each kit contains two pistons, pins, spiral-lock pin clips and Hastings moly rings

• Replacement piston rings and pin lock rings available separately

• These pistons can be installed tighter than other pistons, resulting in less piston rock and better ring seal.

• Special attention is required to the top ring end gap, refer to instructions for correct piston and ring installation

Important Product Notes

Product Specs

Compression Ratio: 10:1

Cylinder Bore Size: 3.875″

Dimension Oversize: .010″

Manufacturer Part Number: KB409C.010

Material: Aluminum

Overall Size: Oversized

Sold in Units: Kit

Style: Forged

Fitment

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Fitment Note: Also fits 2007-13 96" models converted to a 103" big Bore kit.

Click (+) to view all compatible models

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