Manufacturer & Distributor Part Numbers:  
Hastings Punctuated Part#:  2M6164020
Hastings NON-Punctuate Part #:  2M6164020
Drag Specialties Punctuated Part#:  DS-750842
Drag Specialties NON-Punctuate Part#:  DS750842

Piston Rings - 3.498" + 0.020" - Evolution Big Twin

Features

• Includes top compression rings, second compression rings, and oil control rings
• Top Compression Rings are Barrel Face
• 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 Ring are Reverse Torsional Taper Face
• Promotes side sealing that prevents oil from being forced under and behind the ring resulting in better oil economy
• Reverse twist ring along with a taper-machined ring face duplicates the OD bottom side scraping edge of a positive twist torsional ring
• 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
• Due to the thermal conductivity and design of KB pistons, special attention is required to the top ring end gap. Please read instructions furnished with piston for correct ring installation.
• Includes enough rings for two pistons (unless noted).
• Two rings per groove, except for the rails that will be two rail rings per one expander ring.

Specs

Fitment Disclosure:
This quick reference fitment information is provided to direct you to our catalog information and the manufacturer's information. Consult manufacturer publication(s) and/or website(s) for specific fitment and application information and other important information. This fitment information is based upon the stock version of the motorcycle or unit referenced and any accessory added or other modification could invalidate the quick reference information provided.

1999
Harley-Davidson
FXR 3


1999
Harley-Davidson
Softail Night Train FXSTB


1999
Harley-Davidson
FXR 2


1998
Harley-Davidson
Road Glide FLTR


1998
Harley-Davidson
Road Glide EFI FLTR


1997-1999
Harley-Davidson
Softail Heritage Springer FLSTS


1996-1999
Harley-Davidson
1200 Sport XLS


1996-1999
Harley-Davidson
1200 Custom XLC


1996
Harley-Davidson
Tour Glide Ultra Classic EFI FLTCU


1995-1998
Harley-Davidson
Dyna Convertible FXDS-CONV


1995-1998
Harley-Davidson
Road King Classic EFI FLHRC


1995-1998
Harley-Davidson
Electra Glide Classic EFI FLHTCI


1995-1998
Harley-Davidson
Super Glide FXD


1995-1998
Harley-Davidson
Electra Glide Ultra Classic EFI FLHTCUI


1995-1998
Harley-Davidson
Road King EFI FLHR


1995-1998
Harley-Davidson
Electra Glide Police FLHTPI


1995-1997
Harley-Davidson
Softail Bad Boy FXSTSB


1994-1998
Harley-Davidson
Road King FLHR


1994-1996
Harley-Davidson
Softail Heritage Special FLSTN


1993-1998
Harley-Davidson
Low Rider FXDL


1993-1998
Harley-Davidson
Wide Glide FXDWG


1993
Harley-Davidson
Softail Nostalgia FLSTN


1992
Harley-Davidson
Dyna Glide Custom FXDC


1992
Harley-Davidson
Dyna Daytona FXDB


1991
Harley-Davidson
Dyna Sturgis FXDB


1990-1999
Harley-Davidson
Softail Fat Boy FLSTF


1990-1993
Harley-Davidson
Low Rider Convertible FXRS-CONV


1989-1998
Harley-Davidson
Electra Glide Ultra Classic FLHTCU


1989-1996
Harley-Davidson
Tour Glide Ultra Classic FLTCU


1988-1999
Harley-Davidson
Softail Springer FXSTS


1988-1999
Harley-Davidson
Sportster 1200 XLH


1988-1994
Harley-Davidson
Low Rider Custom FXLR


1988
Harley-Davidson
Sportster 1100 XLH


1987-1993
Harley-Davidson
Electra Glide Sport FLHS


1987
Harley-Davidson
Low Rider Chrome FXRC


1986-1999
Harley-Davidson
Softail Custom FXSTC


1986-1999
Harley-Davidson
Softail Heritage Classic FLSTC


1986-1994
Harley-Davidson
Super Glide FXR


1986-1993
Harley-Davidson
Low Rider FXRS


1986-1993
Harley-Davidson
Low Rider Sport FXRS-SP


1986-1990
Harley-Davidson
Softail Heritage FLST


1986
Harley-Davidson
Sport Glide Grand Touring FXRD


1985
Harley-Davidson
Low Glide Custom FXRC


1984-1999
Harley-Davidson
Softail Standard FXST


1984-1998
Harley-Davidson
Electra Glide Classic FLHTC


1984-1998
Harley-Davidson
Electra Glide Police FLHTP


1984-1994
Harley-Davidson
Tour Glide Classic FLTC


1984-1993
Harley-Davidson
Sport Glide FXRT


1984-1992
Harley-Davidson
FXRP


1984-1987, 1995-1998
Harley-Davidson
Electra Glide Standard FLHT


1984-1986
Harley-Davidson
Tour Glide FLT


1984-1985
Harley-Davidson
Low Glide FXRS


1984-1985
Harley-Davidson
Electra Glide Special FLHX


1984-1985
Harley-Davidson
Electra Glide FLH


1984
Harley-Davidson
Disc Glide FXRDG