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 91629039 Same quality as AFCO coil-over

Same quality as AFCO coil-over springs

GM/Marine Marine 1050 Gen-IV Big Block V8

Our lightweight

Clip In / Wrap Around

1/2" ID x 25 ft lengthDerale has been the leader in performance cooling for decades

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 91629039 Same quality as AFCO coil-overHastings 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