Hastings "Tough Guy" Racing File-Fit Piston Ring Set - Bore Size: 4.060" Top Ring: 1/16", Second Ring: 1/16", Oil Ring: 1/8" - Oil Ring Tension: Standard Helmet Visor Cleaner these are the same high

these are the same high quality 16 fin per inch cores that AFCO has always featured

1996-2016 Ford Mustang

and are designed to eliminate the cost of heavy aftermarket cast aluminum bellhousings and cases

GM 4-Cylinder

Hastings "Tough Guy" Racing File-Fit Piston Ring Set - Bore Size: 4.060" Top Ring: 1/16", Second Ring: 1/16", Oil Ring: 1/8" - Oil Ring Tension: Standard Helmet Visor Cleaner these are the same highHastings racing piston rings deliver race winning performance in even the most extreme applications. The low tension, low friction design provides unsurpassed combustion seating and exceptional sealing. Each set includes plasma moly, high tensile cast iron top rings; reverse twist, taper faced cast iron second rings, and choice of standard or low tension Flex Vent stainless steel oil control rings. Low tension oil rings make significant increases in