Wiseco Ford DOHC V8 4.6L Nitrous Top Ring Down .300in -13.0cc 3.572 Bore 8.8:1 CR (Single Piston)

Engineered, forged, and machined in the USA from 2618 aluminum for improved tensile strengthArmorGlide? Skirt Coating: seizure resistant, friction reduction, and quieter operationFully machined crown featuresPrecision ring grooves, anti-detonation groove, and additional ring seal improving featuresForced pin oilingDesigned and built to withstand heavy to severe duty performance applications