Hastings 3.937" Bore Standard Piston Ring Set (2C5231)
Hastings 3.937" Bore Standard Piston Ring Set (2C5231)

Hastings 3.937" Bore Standard Piston Ring Set (2C5231)

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$81.95
$50.39
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Description  
  • Includes top compression rings, second compression rings, and oil control rings.

    • Top compression rings are Barrel Face.

  • Coated using PVD (Physical Vapor Deposition) process.
  • Helps in the the heat transfer process between the piston and cylinder wall.
  • Controls combustion chamber gases allowing the piston to transfer the energy of the expanding combustion gases, to the crankshaft.

    • Second compression rings are Napier.

  • Reverse twist ring along with a taper-machined ring face duplicates the OD bottom side scraping edge of a positive twist torsional ring.
  • Promotes side sealing that prevents oil from being forced under and behind the ring resulting in better oil economy.

    • Oil control rings are Three Piece Flex Vent.

  • Three-piece design allows rails to be manufactured with a small cross sectional area for better conformability to bore.
  • Provides uniform pressure through four steel rails and two expanders assuring positive oil control.
  • Made in the USA.
  • Includes enough rings for two pistons.
  • Two rings per groove, except for the rails that will be two rail rings per one expander ring.
Compatible Vehicles
Years Make Make Notes
2018-2019 Harley-Davidson Breakout FXBR 107
2018-2020 Harley-Davidson Deluxe FLDE 107
2019-2022 Harley-Davidson Electra Glide Standard FLHT
2017-2019 Harley-Davidson Electra Glide Ultra Classic FLHTCU
2018-2019 Harley-Davidson Fat Bob FXFB 107
2018-2019 Harley-Davidson Fat Boy FLFB 107
2017-2018 Harley-Davidson Freewheeler FLRT
2018-2021 Harley-Davidson Heritage Classic FLHC 107
2018-2020 Harley-Davidson Low Rider FXLR 107
2017-2023 Harley-Davidson Road Glide FLTRX
2017-2018 Harley-Davidson Road Glide Special FLTRXS
2017-2018 Harley-Davidson Road Glide Ultra FLTRU
2017-2022 Harley-Davidson Road King FLHR
2017-2018 Harley-Davidson Road King Special FLHRXS
2018-2021 Harley-Davidson Softail Slim FLSL 107
2020-2023 Harley-Davidson Softail Standard FXST 107
2018-2021 Harley-Davidson Sport Glide FLSB 107
2018-2020 Harley-Davidson Street Bob FXBB 107
2017-2023 Harley-Davidson Street Glide FLHX
2017-2018 Harley-Davidson Street Glide Special FLHXS
2017-2018 Harley-Davidson Tri Glide Ultra FLHTCUTG
2017-2018 Harley-Davidson Ultra Limited FLHTK
2017-2018 Harley-Davidson Ultra Limited Low FLHTKL

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