The Manley / Total Seal AP Steel Piston Rings are suggested all Forced Induction and / or Nitrous Applications. These Rings are File to Fit and are sold as a complete set of 6. Designed specifically to fit the Manley Platinum Series 3.7L Cyclone Pistons
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Bore Size
This bore size is determined by your machinist depending on how much your block needed to be bored or honed out. Standard OEM Bore is 3.76". You will need to get the rings that match the bore size of your block and the pistons you are purchasing.
CLICK HERE for 3.7 Pistons