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    Piston Rings

    CNC-Motorsports offers the best selection in performance piston rings for pump gas street engines to nitrous or turbo race engines. We carry piston ring brands by Total Seal, Hastings, JE, Wiseco, CP and Mahle. Shop our selection of pre-fit, file fit, and gapless piston rings. We offer a huge selection of bore size options, and ring thickness sizes. Custom ring sets are available.
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    1. MAH-4145MS-15 PART NUMBER
      Mahle Performance Piston Ring Set 4145MS-15
      Mahle Performance Piston Ring Set 4145MS-15
      $158.86
      Mahle
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      4.140+5 Bore, File Fit, 1.5 1.5 3mm Ring Pak, Std Tension Oil Rings Learn More
    2. MAH-4145ML-043 PART NUMBER
      Mahle Performance Piston Ring Set 4145ML-043
      Mahle Performance Piston Ring Set 4145ML-043
      $192.78
      Mahle
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      4.140+5 Bore, File Fit, .043 .043 3mm Ring Pak, Low Tension Oil Rings Learn More
    3. TS-CS2010-140 PART NUMBER
      CS2010-140
      Total Seal AP Steel Piston Ring Set Low Tension CS2010-140
      $375.68
      Total Seal
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      Total Seal, AP Steel, Piston Rings, 4.140 Bore, Pre Fit, 1.5 1.5 3.0mm Ring Pak, 11 LB Low Tension Oil Rings Learn More
    4. MAH-4145MS-112 PART NUMBER
      Mahle Performance Piston Ring Set 4145MS-112
      Mahle Performance Piston Ring Set 4145MS-112
      $202.98
      Mahle
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      4.140+5 Bore, File Fit, 1.0 1.0 2.0mm Ring Pak, Std Tension Oil Rings Learn More
    5. DRP-09224140 PART NUMBER
      09224140 Diamond Pro Select Piston Rings 4.140 Bore, .043 .043 3.0mm
      09224140 Diamond Pro Select Piston Rings 4.140 Bore, .043 .043 3.0mm
      $317.99
      Diamond
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      4.140 Bore Size, .043 Plasma Moly Dutile Barrel Face Top Ring, .043 Napier Face 2nd Ring, 3.0mm Standard Tension Oil Ring, File Fit, 8 Cylinder Set Learn More
    6. MAH-4145MS-1115 PART NUMBER
      Mahle Performance Piston Ring Set 4145MS-1115
      Mahle Performance Piston Ring Set 4145MS-1115
      $189.56
      Mahle
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      4.140+5 Bore, File Fit, 0.043", 1.5mm, 3.0mm, Ring Pak, Standard Tension Oil Rings Learn More
    7. DRP-09214140 PART NUMBER
      09214140 Diamond Pro Select Piston Rings 4.140 Bore .043 .043 3.0mm
      09214140 Diamond Pro Select Piston Rings 4.140 Bore .043 .043 3.0mm
      $329.99
      Diamond
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      Fits 4.140 Bore Size, .043 AP Stainless Steel Top Ring, .043 Napier Face 2nd Ring, 3.0mm High Tension Oil Ring, File Fit, 8 Cylinder Set Learn More
    8. DRP-09754140 PART NUMBER
      09754140 Diamond Pro Select Piston Rings 4.140 Bore .0354 .0354 2.0mm
      09754140 Diamond Pro Select Piston Rings 4.140 Bore .0354 .0354 2.0mm
      $392.99
      Diamond
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      Fits 4.140 Bore Size, 0.0354 AP Steel Top Ring, 0.0354 Napier 2nd Ring, 2.0mm Low Tension Oil Ring, File Fit, 8 Cylinder Set Learn More
    9. DRP-09854140 PART NUMBER
      09854140 Diamond Pro Select Piston Rings 4.140 Bore 1.0 1.0 2.0mm
      09854140 Diamond Pro Select Piston Rings 4.140 Bore 1.0 1.0 2.0mm
      $222.99
      Diamond
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      Fits 4.140 Bore Size, 1.0mm HV385 Steel Top Ring, 1.0mm Napier 2nd Ring, 2.0mm Standard Tension Oil Ring, File Fit, 8 Cylinder Set Learn More
    10. Ts-TFX1010204140 PART NUMBER
      CS9010-5
      TFX1010204140 Total Seal TFX Steel Top Piston Ring Set, 4.140 Bore
      $189.95
      Total Seal
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      Total Seal, TFX Steel, Piston Rings, 4.140 Bore, File Fit, 1.0mm 1.0mm 2.0mm Ring Pack, Set of 8 rings

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    Products (1-10 of 11)

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      4.140
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    180. 5.000 1 item
    181. 81.00mm 2 items
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    184. 82.00mm 2 items
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    Oil Ring
    1. 2.0mm 4 items
    2. 3.0mm 7 items
    Ring Fitment
    1. File Fit 10 items
    2. Pre Fit 1 item
    Ring Series
    1. AP Steel Top 2 items
    2. Classis AP Steel Top 1 item
    3. Ductile Iron 2 items
    4. Ductile Iron Low Tension 1 item
    5. HV385 Steel 1 item
    6. Plasma-Moly Ductile 1 item
    7. Standard Tension 1 item
    8. TFX 2 items
    Second Ring
    1. 0.0354" 1 item
    2. 0.043" 3 items
    3. 1.0mm 3 items
    4. 1.2mm 1 item
    5. 1.5mm 3 items
    Top Ring
    1. 0.0354" 1 item
    2. 0.043" 4 items
    3. 1.0mm 3 items
    4. 1.2mm 1 item
    5. 1.5mm 2 items
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