Hastings "Tough Guy" Racing Standard Piston Ring Set - Bore Size: 4.030" Top Ring: 1/16", Second Ring: 1/16", Oil Ring: 3.0mm - Oil Ring Tension: Standard H778001L **CTS monitor not included

**CTS monitor not included

11/16 in or Smaller Shaft

Great upgrade for stock cam in fuel injected applications

1968-1968 GMC G15/G1500 Van

It is simple

Hastings "Tough Guy" Racing Standard Piston Ring Set - Bore Size: 4.030" Top Ring: 1/16", Second Ring: 1/16", Oil Ring: 3.0mm - Oil Ring Tension: Standard H778001L **CTS monitor not includedHastings 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