74 FLH-FX Piston Set .005 Oversize
Keith Black 390 hypereutectic piston set is .005 oversize and is for 3.438 bore. Pistons have a compression of 9.0:1.
**Note:Run engine at moderate speeds for at least 500 miles avoiding excessive running in lower gears in order to properly break-in new pistons and rings.
Country Of Origin: MEXICO
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