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Pro-Lite PK Piston Kit - PK1139

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Pro-Lite PK Piston Kit - PK1139

  • Part #:
  • Mfg Part #:
  • OEM/Ref#:
MSRP: $179.78

Price: $133.95 25% off!
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Wiseco Pro-Lite PK Piston Kit - PK1139
  • Durability, longevity and increased horsepower
  • Innovative forging design and piston skirt provide maximum horsepower and torque
  • Lightweight wrist pins enable faster revs and quicker throttle response
  • Contain all the necessary components for overboring or rebuilding your top end
  • SCEM Composite - Cylinder resleeving or replating required for oversizes
  • Cylinder sleeves must be purchased separately

  • Included Items:
    (1) W6385 Top End Gasket set
    (1) 641M05500 Piston Kit
    (1) B1013 Top End Bearing

    Note: For 54.5mm bore/.5mm over size use part number PK1138

    Our pistons, rings and kits are sold by application and bore size. Please note that STANDARD and OVERSIZES are not indicated. To get the correct part, you must know the standard bore size to make sure you are ordering either the standard or correct amount of oversize that you need. If you have any questions, please call Technical Service.
Bore Size 55 mm
Mfg #: PK1139
Part #: PK1139
Type Top End Kit w/o Cylinder
Type Top End Rebuild
Units Kit
Weight 0.85 lbs
Alternate/OEM Part Number(s):
WARNING: Cancer and Reproductive Harm -
Fitment for Wiseco Pro-Lite PK Piston Kit - PK1139

Part PK1139 fits the following machines

  • RM125 1997-1999
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