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                               PISTON RINGS
   PISTON RINGS      PISTON RINGS


 Wiseco Ring Chart  Wiseco Ring Chart
 All Wiseco rings can be used in cast iron, nickel ceramic platings (Nikasil), boron composite, and Electrofusion bores.
 CAUTION: With the exception of the XJ rings, Wiseco 4-stroke rings can NOT be used in chrome plated bores. Engine damage will occur.
 *XJ rings are designed to be used in chrome bores.
 Type  Bore Range  Top Ring  2nd Ring  Oil Ring  Type  Bore Range  Top Ring  2nd Ring          Oil Ring
 2.0mm (.078”)  2.0mm (.078”)  4mm (.118”)  1.5mm (.057”)   1.5mm (.057”)        3mm (.118”)
 E  Alloy steel  Cast iron  3-piece oil assembly  XN  96.84mm (3.8125”)  Cast iron,   Cast iron,   3 piece oil assembly:
                                                           reverse torsion
                                                                                 Stainless steel flex-vent spacer,
 Phosphate coated
 Ferrox coated
                                       plasma
 Chrome faced  Taper faced  Stainless stl. flex-vent spacer  moly faced  taper faced  unplated rails
 1.2mm (.047”)                         1.5mm (.057”)       1.5mm (.057”)         3mm (.118”)
 0.7mm (.028”)   2mm (.079”)
 EK  96 - 98mm (3.780 - 3.858”)  Alloy steel,   Cast iron,   2 piece cast iron oil assembly,   XP  92.01 - 96.01mm (3.663 - 3.780”)  Cast iron,   Cast iron,   3 piece oil assembly:
 flat faced  phosphate coated,   phosphate coated  plasma   reverse torsion      Stainless steel flex-vent spacer,
 taper faced                           moly faced          taper faced           chrome faced rails
 1.2mm (.047”)   1.2mm (.047”) Cast   3mm (.118”)   1.5mm (.057”)   1.5mm (.057”)   3mm (.118”)
 GFX  93.54 - 105.61mm (3.683- 4.158”)  Alloy steel,   iron, phosphate   3 piece oil assembly:   XQ  95 - 97.28mm (3.740 - 3.830”)  Cast iron,   Cast iron,   3 piece oil assembly:
 coated, taper
                                                                                 Stainless steel flex-vent spacer,
                                                           reverse torsion
 gas nitrided,
 Stainless steel flex-vent spacer,
 positive twist  faced, under hook  chrome faced rails  moly faced  taper faced  chrome faced rails
 1.5mm (.058”)  1.5mm (.058”)          1mm (.039”)         1.2mm (.047”)         2mm (.079”)
 Alloy steel  Cast iron  3mm (.118”)  XR  85 - 94mm (3.346 - 3.701”)  Alloy steel,   Cast iron,   3 piece oil assembly:
 GNX  Gas Nitrided  Phosphate coated  3-piece oil assembly  ferrox coated,   phosphate coated,   Stainless steel flex-vent spacer,
 Stainless stl. flex-vent spacer
 Barel faced,   Taper faced under-  Chrome faced rails  chrome faced  taper faced  chrome faced rails
 positive twist  hook                  1.2mm (.047”)       1.5mm (.057”)         2mm (.079”)
                                                                                 3 piece oil assembly:
                                       Alloy steel,
                                                           Cast iron,
 062” (1/16”)  .187” (3/16”)  XS  95 - 104mm (3.740 - 4.094”)  ferrox coated,   phosphate coated,   Stainless steel flex-vent spacer,
 H  Hi-tensile   062” (1/16”)  3-piece   chrome faced      taper faced             chrome faced rails
 Cast
 Plasma
                                       0.9mm (.035”)
                                                           0.8mm (.031”)
                                                                                 1.5mm (.059”)
 Moly  Standard Tension  XU  77.00mm (3.031”)  Alloy steel,   Ductile iron,      3 piece oil assembly:
 .062” (1/16”)  3.0mm (.118”)          ferrox coated,      phosphate coated,     Stainless steel flex-vent spacer,
                                       chrome faced
                                                           taper faced
                                                                                 chrome faced rails
 HF  Hi-tensile   .062” (1/16”)  3-piece   1mm (.039”)     1.2mm (.047”)         2.8mm (.110”)
 Cast
 Plasma
 Moly  Standard Tension  XX  75 - 100mm (2.953 - 3.937”)  Stainless steel,   Cast iron,    3 piece oil assembly:
                                                           phosphate
 1.2mm (.047”)                         gas nitrided,       coated, taper         Stainless steel flex-vent spacer,
 1.0mm (.039”)  Cast iron  2.8mm (.110”)  barrel faced     faced, under hook       nitrided rails
 TX  Alloy steel  Phosphate coated  3-piece oil assembly  1.2mm (.047”)   1.5mm (.057”)   3mm (.118”)
 Stainless stl. flex-vent spacer
 Ferrox coated
 Barel faced  Taper faced, napier   Chrome faced rails  XY  95-100mm (3.740 - 3.937”)  Alloy steel,   Cast iron,     3 piece oil assembly:
                                       ferrox coated,
                                                           phosphate coated,
                                                                                 Stainless steel flex-vent spacer,
 underhook
 1.2mm (.047”)   1.5mm (.057”)   3mm (.118”)   chrome faced  taper faced           chrome faced rails
                                                                                 2.8mm (.110”)
                                       1.96mm (.077”)
 VA  97mm (3.819”)  Alloy steel,   Cast iron,   3 piece oil assembly:   XL  65.09 - 67.63mm (2.563 - 2663”) Chrome faced   No second ring    3 piece oil assembly:
 phosphate coated,
 Stainless steel spacer,
 ferrox coated,
 chrome faced  taper faced  chrome faced rails  Nodular iron                     Stainless steel spacer,
                                                                                 chrome faced rails
 1.2mm (.047”)  1.5mm (.057”)  2mm (.079”)  1mm (.039”)                          2.8mm (.110”)
 VF  Alloy steel  Cast iron  3-piece oil assembly:  XM  65.09 - 71.50mm (2.563 - 2.815”)  Alloy steel,   No second ring    3 piece oil assembly:
                                                                                 Stainless steel spacer,
                                       ferrox coated,
 Phos. coated
 Stainless stl. flex-vent spacer
 Phosphate coated
 Chrome faced  Taper faced  Chrome faced rails  chrome faced                     chrome faced rails
 .078” (5/64”)  .187” (3/16”)          0.9mm (.035”)                             1.5mm (.059”)
                                                                                 3 piece oil assembly:
                                       Stainless steel,
 VK  Hi-tensile   .078” (5/64”)  3-piece   YB  78mm (3.071") & 80mm (3.150”)  gas nitrided,   No second ring  Stainless steel flex-vent spacer,
 Plasma
 Cast
                                       barrel faced
                                                                                   nitrided rails
 Moly  Standard Tension                0.8mm (.031”)
 1.58mm (.0625”)   1.58mm (.0625”)   3.9mm (.1525”)   Alloy steel,               1.5mm (.059”)
 X  80.97 - 92.83mm (3.188 - 3.655”)  Cast iron,   Cast iron, taper   3 piece oil assembly:   YC  77mm (3.031”)  phosphate   No second ring  3 piece oil assembly:
                                                                                 Stainless steel flex-vent spacer,
                                       coated,
 moly barrel
 Stainless steel flex-vent spacer,
 faced, reverse
 faced  torsion  chrome faced rails    chrome faced                              chrome faced rails
                                       positive twist
 0.8mm (.031”)   0.8mm (.031”)   1.5mm (.059”)   1mm (.039”)
 XA  60 - 74.5mm (2.362-2.933”)  Alloy steel,   Nodular iron,   3 piece oil assembly:   Alloy steel,   2mm (.079”)
 ferrox coated,
 phosphate coated,
 Stainless steel flex-vent spacer,
                                       phosphate
                                                                                 3 piece oil assembly:
 chrome faced  taper faced  chrome faced rails  YE  95mm (3.740")  coated,   No second ring  Stainless steel flex-vent spacer,
 1mm (.039”)   1.2mm (.047”)   2.8mm (.110”)   chrome faced                      chrome faced rails
                                       positive twist
 XC  64-94mm (2.520-3.701”)  Alloy steel,   Cast iron,   3 piece oil assembly:   .8mm (.031”)   1.5mm (.057”)
 phosphate coated,
 ferrox coated,
 Stainless steel spacer,
 chrome faced  taper faced  chrome faced rails  YF  66mm (2.598")  Alloy steel,   No second ring  3 piece oil assembly:
                                       gas nitrided,
 1mm (.039”)   1.2mm (.047”)   2mm (.079”)   barrel faced                        Stainless steel flex-vent spacer,
                                                                                 chrome faced rails
 XD  66-68mm (2.598-2.677”)  Alloy steel,   Cast iron,   3 piece oil assembly:   positive twist  2mm (.079”)
                                       1.1mm (.043”)
 phosphate coated,
 Stainless steel spacer,
 ferrox coated,
 chrome faced  taper faced  chrome faced rails  ZB  107.95mm (4.250")  Ductile iron,   No second ring  3 piece oil assembly:
                                                                                   Stainless steel flex-vent spacer,
                                       plasma moly
 1mm (.039”)   1.2mm (.047”)   2.5mm (.098”)   face                              chrome faced rails
 XE  47-59mm (1.850-2.323”)  Alloy steel,    Cast iron,   3 piece oil assembly:   1mm (.039”)   2.8mm (.110”)
 Stainless steel spacer,
 phosphate coated,
 ferrox coated,
                                       Alloy steel,
                                                                                 3 piece oil assembly:
 chrome faced  taper faced  chrome faced rails  ZC  89mm (3.504") & 91mm (3.583”)  ferrox coated,   No second ring  Stainless steel spacer,
 1mm (.039”)   1mm (.039”)   2mm (.079”)   chrome faced                          chrome faced rails
 XG  75-83mm (2.953-3.268”)  Alloy steel,   Nodular iron,   3 piece oil assembly:   ZG  76mm (2.992”)  1mm (.039”)   No second ring  2mm (.079”)
                                                                                 3 piece oil assembly:
                                       Alloy steel,
 phosphate coated,
 ferrox coated,
 Stainless steel flex-vent spacer,
 gas nitrided  taper faced  chrome faced rails  ferrox coated,                     Stainless steel flex-vent spacer,
                                                                                   chrome faced rails
                                       gas nitrided
 1.2mm (.047”)   1.5mm (.057”)   4mm (.057”)                                     3mm (.118”)
 XH  95-102mm (3.740-3.977”)  Alloy steel,   Cast iron,   3 piece oil assembly:   ZN  96.84mm (3.8125”)  1.5mm (.057”)   No second ring  3 piece oil assembly:
                                       Alloy steel,
 ferrox coated,
 phosphate coated,
 Stainless steel spacer,
                                                                                   Stainless steel flex-vent spacer,
 chrome faced  taper faced  chrome faced rails  unplated face                    unplated rails
 1.2mm (.047”)   1.5mm (.057”)   4mm (.158”)   1.2mm (.047”)                     2mm (.079”)
 *XJ  95mm (3.740”)  Soft nitrided,   Cast iron,   3 piece oil assembly:   ZS  95 - 101mm (3.740 - 3.976”)  Alloy steel,   No second ring    3 piece oil assembly:
                                                                                   Stainless steel flex-vent spacer,
                                       ferrox coated,
 Stainless steel spacer,
 nodular cast
 phosphate coated,
 iron  taper faced  soft nitrided rails  chrome faced                              chrome faced rails
 1.5mm (.057”)   1.5mm (.057”)   2.5mm (.098”)   .95mm (.037”)                   2mm (.079”)
                                       Alloy steel,
 XK  98.42 - 103.38mm (3.875 - 4.070”)  Cast iron,    Cast iron,   3 piece oil assembly:   ZV  96 - 100mm (3.780 - 3.937")  gas nitrided   No second ring    3 piece oil assembly:
                                                                                 Stainless steel flex-vent spacer,
 reverse torsion
 Stainless steel flex-vent spacer,
 plasma
                                       barrel faced
 moly faced  taper faced  chrome faced rails  positive twist                     chrome faced rails
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