Diamond Racing Pistons - 4.005-4.125 Bore Range

Pro Select Ring Sets - 4.005-4.125 Bore Range
Diamond’s Pro-Select ringset’s are available for applications from naturally aspirated to high hp power adders. Bore size availability ranges from 3.346” to 4.675”, and come in a wide variety of top ring materials. Not sure on what ringset will fit your application the best? Contact our technical staff and let them help you pick the best ring package for your build.

  • Legend - Top Ring:
  • AP - Stainless Steel W/ C23 PVD Face Coating - Great for power adder applications
  • AP Gapless - Stainless Steel W/ C23 PVD Face Coating - Gapless ring
  • CRM - Carbon Steel - Chrome Barrel Face
  • GN - Gas Nitrided - Barrel Face - Great for street/strip power adder applications
  • KS - Keystone – Diesel applications
  • PMD - Plasma Moly Ductile Barrel Face – NA/Mild Power adder applications
  • PMD Gapless - Plasma Moly Ductile Barrel Face - Gapless – NA/Mild Power adder applications
  • TNT - Martensitic Ductile Iron Barrel Face - Power adder applications
  • Fire-Power - PC479 Coated Hardened Ductile Barrel Face - Power adder applications
  • Legend - 2nd Ring:
  • NAP - Napier Face – Great oil control 2nd ring
  • RBT - Taper Face – Reverse Back Twist
  • ZG - Z-Gap – Gapless 2nd – Diesel applications
  • Legend - Oil Ring:
  • LT - Light tension oil ring
  • STD - Standard tension oil ring
  • HT - High tension oil ring
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