Wiseco Ford SOHC V8 4.6L 2 Val NA/Boost/Nitrous Top Ring Down .300in -20.0cc 3.552 Bore 8.9:1 CR - K0089XS

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