SKU:10-2091
The V-Twin 10-2091 Factory Sample Cylinder Head Set is designed to support improved engine airflow, horsepower, and torque. Each head receives a complete valve job for reliable performance and consistent valve operation. The single-plug heads are assembled with chrome rocker boxes and are supplied as a matched pair, making this kit a practical replacement or project component for select Harley-Davidson applications from the late 1970s through the mid-1980s.
Factory sample parts are brand-new pre-production components that may have cosmetic imperfections in the finished surface. These imperfections can include marks from installation testing or fitment evaluation. The parts do not have physical defects such as cracks or holes; however, the appearance may differ from production-finished components. Inspect each part carefully before installation and verify that threaded and bearing holes are free of excess plating.
The V-Twin 10-2091 cylinder head set has a maximum recommended valve lift of .450 inch and is supplied in kit form. It fits select 1978–1984 Harley-Davidson FL and FX models, including the 1978, 1979, 1980, 1981, 1982, and 1983 FL applications and the 1979, 1980, 1981, 1982, 1983, and 1984 FX applications listed for this product. Confirm motorcycle year, model, engine configuration, and installation requirements before ordering. Professional inspection and installation are recommended to ensure proper fit, clearance, and engine operation.
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