Wiseco Black Edition V-Twin. Piston Kit, 3.937 in. Bore, 11:1 CR
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Wiseco Black Edition pistons are designed and built to be the ultimate in piston performance and durability for Harley-Davidson engines. Introducing proprietary, industry first coatings, Black Edition pistons perform as good as they look. Wiseco’s ArmorX coating protects critical areas of the piston for miles and miles of riding, while ArmorFit skirt coating helps reduce engine noise and friction. Equip your performance Milwaukee-8, Twin Cam, or Rushmore Harley build with the American-made pistons it deserves.