Hastings "Tough Guy" Racing File-Fit Piston Ring Set - Bore Size: 4.145" Top Ring: 1/16", Second Ring: 1/16", Oil Ring: 3/16" - Oil Ring Tension: Standard H777C08XS 1965-1965 GMC 1500 Series

1965-1965 GMC 1500 Series

900 in Head

Seal / Spacer

Ultra-durable and long-lasting container is rotationally-molded which gives additional wall thickness throughout

1966-1979 Ford Thunderbird

Hastings "Tough Guy" Racing File-Fit Piston Ring Set - Bore Size: 4.145" Top Ring: 1/16", Second Ring: 1/16", Oil Ring: 3/16" - Oil Ring Tension: Standard H777C08XS 1965-1965 GMC 1500 SeriesHastings 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