Hastings "Tough Guy" Racing File-Fit Piston Ring Set - Bore Size: 4.000" Top Ring: 1/16", Second Ring: 1/16", Oil Ring: 3/16" - Oil Ring Tension: Standard 10203C Use choke rod #9171

Use choke rod #9171

Bel Era III

the Hyper-Cool Extreme is designed to outperform the competition

1971-1971 Mercury Comet

Hastings "Tough Guy" Racing File-Fit Piston Ring Set - Bore Size: 4.000" Top Ring: 1/16", Second Ring: 1/16", Oil Ring: 3/16" - Oil Ring Tension: Standard 10203C Use choke rod #9171Hastings 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