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I have used Arias pistons, Speed-Pro rings, and Scat rods in the past and must say they have never let me down. On the pistons, notice they are a lightweight design but the ring package doesn't need a spacer ring to support the oil control ring--a common crutch used when the wrist pin bore intrudes into the oil ring land. Not having this reduces piston weight and simplifies the ring package (which is made up of .049-inch/.049-inch/3mm rings from Speed-Pro). View Related Article
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