Hastings "Tough Guy" Racing File-Fit Piston Ring Set - Bore Size: 4.030" Top Ring: 1/16", Second Ring: 1/16", Oil Ring: 1/8" - Oil Ring Tension: Standard Gas Cap Pre-Cut / Drilled

Pre-Cut / Drilled

An exclusive 12 point head design

but a good gasket can do it with less clamping force

1988-1996 Mercury Tracer

Designed to solve fuel delivery problems in high horsepower

Hastings "Tough Guy" Racing File-Fit Piston Ring Set - Bore Size: 4.030" Top Ring: 1/16", Second Ring: 1/16", Oil Ring: 1/8" - Oil Ring Tension: Standard Gas Cap Pre-Cut / DrilledHastings 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