Hastings "Tough Guy" Racing Standard Piston Ring Set - Bore Size: 4.000" Top Ring: 1/16", Second Ring: 1/16", Oil Ring: 3/16" - Oil Ring Tension: Standard 20-OTL-NR-LXL GM Fullsize SUV / Truck

GM Fullsize SUV / Truck 2019-22

M and L-59) and one for large sizes (L-60

R1500 Suburban 1991-1987

While Superchips initially focused on serving the British racing community with high-end solutions

With Out EGR

Hastings "Tough Guy" Racing Standard Piston Ring Set - Bore Size: 4.000" Top Ring: 1/16", Second Ring: 1/16", Oil Ring: 3/16" - Oil Ring Tension: Standard 20-OTL-NR-LXL GM Fullsize SUV / TruckHastings 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