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You are here: Home > Piston Rings > Probe Piston Rings > Pre-Fit

Traditionally, pre-gapped replacement ring-sets are “sized” for the nominal bore size of the engine, usually with generous end gap clearances to minimize the potential of butting the end gaps. These are perfect of the novice engine builder or for a lower performance build where ring end gaps are not critical.

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Probe Piston Rings
Probe Gas_Nitrided Stainless Steel Ring Set_3.898_1.2 1.2 3.0_Pre Fit

P/N: 1411-20000
  • Gas Nitrided Steel Moly Top Ring
  • Napier Second Ring (Martensitic)
  • Standard Tension Oil (Flex-Vent)
  • 3.898 Base Bore
  • 8 Cylinder Set
Available Bore Sizes: 3.898, 3.905
more info
Probe Piston Rings
Probe Gas_Nitrided Stainless Steel Ring Set_3.898_1.2 1.5 3.0_Pre Fit

P/N: 1412-30000
  • Stainless Steel Top Ring (Nitrided)
  • Napier Second Ring (Martensitic)
  • Standard Tension Oil (Flex-Vent)
  • 3.898 Base Bore
  • 8 Cylinder Set
Available Bore Sizes: 3.898, 3.905
more info
Probe Piston Rings
Probe Gas_Nitrided Stainless Steel Ring Set_3.917_1.2 1.2 3.0_Pre Fit

P/N: 1411-20001
  • Gas Nitrided Steel Moly Top Ring
  • Napier Second Ring (Martensitic)
  • Standard Tension Oil (Flex-Vent)
  • 3.917 Base Bore
  • Pre Fit
  • 8 Cylinder Set
Available Bore Sizes: 3.917, 3.927, 3.937
 more info
Probe Piston Rings
Probe Gas_Nitrided Stainless Steel Ring Set_3.917_1.2 1.5 3.0_Pre Fit

P/N: 1412-30001
  • Stainless Steel Top Ring (Nitrided)
  • Napier Second Ring (Martensitic)
  • Standard Tension Oil (Flex-Vent)
  • 3.917 Base Bore
  • Pre Fit
  • 8 Cylinder Set
Available Bore Sizes: 3.917, 3.927, 3.937
 more info
Probe Piston Rings
Probe Gas_Nitrided Stainless Steel Ring Set_4.000_1.2 1.2 3.0_Pre Fit

P/N: 1411-20002
  • Gas Nitrided Steel Moly Top Ring
  • Napier Second Ring (Martensitic)
  • Standard Tension Oil (Flex-Vent)
  • 4.000 Base Bore
  • Pre Fit
  • 8 Cylinder Set
Available Bore Sizes: 4.000, 4.010, 4.020, 4.030, 4.040, 4.050, 4.060, 4.070, 4.080, 4.100, 4.120
 more info
Probe Piston Rings
Probe Gas_Nitrided Stainless Steel Ring Set_4.000_1.2 1.2 3.0_Pre Fit

P/N: 1412-30002
  • Stainless Steel Top Ring (Nitrided)
  • Napier Second Ring (Martensitic)
  • Standard Tension Oil (Flex-Vent)
  • 4.000 Base Bore
  • +.005 File Fit
  • 8 Cylinder Set
Available Bore Sizes: 4.000, 4.030, 4.040, 4.060, 4.070, 4.080, 4.100, 4.120
more info
Probe Piston Rings
Probe Gas_Nitrided Stainless Steel Ring Set_4.125_1.2 1.2 3.0_Pre Fit

P/N: 1411-20003
  • Gas Nitrided Steel Moly Top Ring
  • Napier Second Ring (Martensitic)
  • Standard Tension Oil (Flex-Vent)
  • 4.125 Base Bore
  • 8 Cylinder Set
Available Bore Sizes: 4.125, 4.135, 4.155, 4.165, 4.185 more info
Probe Piston Rings
Probe Moly Faced Steel Ring Set_3.780_1.5 1.5 3.0_Pre Fit

P/N: 1413-10000
  • Stainless Steel Top Ring (Nitrided)
  • Napier Second Ring (Martensitic)
  • Standard Tension Oil (Flex-Vent)
  • 3.780 Base Bore
  • Pre Fit
  • 8 Cylinder Set
Available Bore Sizes: 3.780
more info
Probe Piston Rings
Probe Moly Faced Steel Ring Set_3.898_1.5 1.5 3.0_Pre Fit

P/N: 1413-10001
  • Stainless Steel Top Ring (Nitrided)
  • Napier Second Ring (Martensitic)
  • Standard Tension Oil (Flex-Vent)
  • 3.898 Base Bore
  • Pre Fit
  • 8 Cylinder Set
Available Bore Sizes: 3.898, 3.905
more info
Probe Piston Rings
Probe Moly Faced Steel Ring Set_3.917_1.5 1.5 3.0_Pre Fit

P/N: 1413-10002
  • Stainless Steel Top Ring (Nitrided)
  • Napier Second Ring (Martensitic)
  • Standard Tension Oil (Flex-Vent)
  • 3.917 Base Bore
  • Pre Fit
  • 8 Cylinder Set
Available Bore Sizes: 3.917, 3.927, 3.937
more info