High-Performance Piston Kit — 3.5055" piston, 4.25" stroke, 1340 cc, 10.0:1, Aluminum

WISECO High-Performance Piston Kit — 3.5055" piston, 4.25" stroke, 1340 cc, 10.0:1, Aluminum – 84-86 Big Twin, 84-96 Touring, 85-89, 91, 93, 98-99 Softail, 91, 94-95 Dyna, 85-94 FXR, 99 CVO

WISECO
K1666
WK1666
Complete top-end piston kit with forged high-silicon aluminum pistons, X-Ring set, chrome wrist pins and circlips. Made in USA.
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Built for serious performance and durability, this high-performance piston kit delivers reliable top-end rebuild components. 🔧🔥

Forged from high-silicon aluminum alloy for maximum strength and dependability, the kit includes precision pistons and an X-Ring set for improved sealing.

  • 2x pistons
  • 2x ring sets (X-ring: 0.062" top ring, 0.062" compression ring, 0.158" oil ring)
  • 2x wrist pins (chrome)
  • 4x circlips

Pistons are made in the USA and supplied as a complete top-end rebuild kit for straightforward installation. 🇺🇸

: K1666
In Stock

Data sheet

Type
Top End
Units
Kit
Color/Finish
Aluminum
Brand
WISECO
Engine Type
4-Stroke
Skirt Coating
Non-Coated
Bore - Oversize
+0.010"
Piston Material
Forged 2618 Aluminum
Bore Size
3,508"
Displacement
1340 cc
Piston Head Shape
Positive Dome +12.9 cc
Piston Diameter
3,5055"
3.5055"
Stroke Length
4-1/4"
Compression Ratio
10.0:1
Harley Family
CVO
Dyna
FXR
Softail
Touring
Vintage Big Twin

This product fits the following vehicles. Use the filters below to narrow down the list if needed.

Manufacturer Model Family Year Notes
Harley Davidson Electra Glide Standard Big Twin 1984
Harley Davidson Electra Glide Standard Big Twin 1985
Harley Davidson Electra Glide Sport Touring 1987
Harley Davidson Electra Glide Sport Touring 1988
Harley Davidson Electra Glide Sport Touring 1989
Harley Davidson Electra Glide Sport Touring 1990
Harley Davidson Electra Glide Sport Touring 1993
Harley Davidson Electra Glide Sport Touring 1994
Harley Davidson Electra Glide Touring 1984
Harley Davidson Electra Glide Touring 1986
Harley Davidson Electra Glide Touring 1987
Harley Davidson Electra Glide Touring 1988
Harley Davidson Electra Glide Standard Touring 1995
Harley Davidson Electra Glide Classic Touring 1984
Harley Davidson Electra Glide Classic Touring 1985
Harley Davidson Electra Glide Classic Touring 1986
Harley Davidson Electra Glide Classic Touring 1987
Harley Davidson Electra Glide Classic Touring 1988
Harley Davidson Electra Glide Classic Touring 1989
Harley Davidson Electra Glide Classic Touring 1990
Harley Davidson Electra Glide Classic Touring 1991
Harley Davidson Electra Glide Ultra Classic Touring 1989
Harley Davidson Electra Glide Ultra Classic Touring 1990
Harley Davidson Electra Glide Ultra Classic Touring 1991
Harley Davidson Electra Glide Ultra Classic Touring 1992
Harley Davidson Electra Glide Ultra Classic Touring 1995
Harley Davidson Electra Glide Ultra Classic Special Anniversary Edition Touring 1995
Harley Davidson Electra Glide Classic Touring 1984
Harley Davidson Electra Glide Special Touring 1984
Harley Davidson Electra Glide Special Touring 1985
Harley Davidson Heritage Softail Softail 1986
Harley Davidson Tour Glide Touring 1984
Harley Davidson Tour Glide Classic Touring 1984
Harley Davidson Tour Glide Classic Touring 1985
Harley Davidson Tour Glide Classic Touring 1986
Harley Davidson Tour Glide Classic Touring 1987
Harley Davidson Tour Glide Classic Touring 1988
Harley Davidson Tour Glide Classic Touring 1989
Harley Davidson Tour Glide Classic Touring 1990
Harley Davidson Tour Glide Ultra Classic Touring 1989
Harley Davidson Tour Glide Ultra Classic Touring 1990
Harley Davidson Tour Glide Ultra Classic Touring 1993
Harley Davidson Tour Glide Ultra Classic Touring 1994
Harley Davidson Tour Glide Ultra Classic Touring 1995
Harley Davidson Tour Glide Ultra Classic Touring 1996
Harley Davidson Dyna Glide Sturgis Dyna 1991
Harley Davidson Dyna Low Rider Dyna 1995
Harley Davidson Dyna Super Glide Convertible Dyna 1994
Harley Davidson Dyna Super Glide Convertible Dyna 1995
Harley Davidson Fat Bob Big Twin 1985
Harley Davidson Fat Bob Big Twin 1986
Harley Davidson Low Rider Custom FXR 1987
Harley Davidson Low Rider Custom FXR 1988
Harley Davidson Low Rider Custom FXR 1989
Harley Davidson Low Rider Custom FXR 1990
Harley Davidson Low Rider Custom FXR 1991
Harley Davidson Low Rider Custom FXR 1992
Harley Davidson Low Rider Custom FXR 1993
Harley Davidson Low Rider Custom FXR 1994
Harley Davidson Super Glide FXR 1986
Harley Davidson Super Glide FXR 1987
Harley Davidson Super Glide FXR 1988
Harley Davidson Super Glide FXR 1989
Harley Davidson Super Glide FXR 1990
Harley Davidson Super Glide FXR 1991
Harley Davidson Super Glide FXR 1992
Harley Davidson Super Glide FXR 1993
Harley Davidson Super Glide FXR 1994
Harley Davidson Super Glide Screamin Eagle CVO 1999
Harley Davidson Super Glide Screamin Eagle CVO 1999
Harley Davidson Low Glide Custom FXR 1985
Harley Davidson Low Glide Custom FXR 1986
Harley Davidson Low Glide Custom FXR 1987
Harley Davidson Disc Glide FXR 1986
Harley Davidson Disc Glide Big Twin 1985
Harley Davidson Low Glide FXR 1985
Harley Davidson Low Rider FXR 1986
Harley Davidson Low Rider FXR 1987
Harley Davidson Low Rider FXR 1988
Harley Davidson Low Rider FXR 1989
Harley Davidson Low Rider FXR 1990
Harley Davidson Low Rider FXR 1991
Harley Davidson Low Rider FXR 1992
Harley Davidson Low Rider Convertible FXR 1989
Harley Davidson Low Rider Convertible FXR 1990
Harley Davidson Low Rider Convertible FXR 1991
Harley Davidson Low Rider Convertible FXR 1992
Harley Davidson Low Rider Convertible FXR 1993
Harley Davidson Low Rider Sport Edition (Fxrsl) FXR 1986
Harley Davidson Low Rider Sport Edition (Fxrsl) FXR 1987
Harley Davidson Low Rider Sport Edition (Fxrsl) FXR 1988
Harley Davidson Low Rider Sport Edition (Fxrsl) FXR 1989
Harley Davidson Low Rider Sport Edition (Fxrsl) FXR 1990
Harley Davidson Low Rider Sport Edition (Fxrsl) FXR 1991
Harley Davidson Low Rider Sport Edition (Fxrsl) FXR 1992
Harley Davidson Low Rider Sport Edition (Fxrsl) FXR 1993
Harley Davidson Sport Glide FXR 1985
Harley Davidson Sport Glide FXR 1986
Harley Davidson Sport Glide FXR 1987
Harley Davidson Sport Glide FXR 1988
Harley Davidson Sport Glide FXR 1989
Harley Davidson Sport Glide FXR 1990
Harley Davidson Sport Glide FXR 1991
Harley Davidson Sport Glide FXR 1992
Harley Davidson Low Rider Big Twin 1985
Harley Davidson Softail Softail 1985
Harley Davidson Softail Softail 1986
Harley Davidson Softail Softail 1988
Harley Davidson Softail Softail 1989
Harley Davidson Softail Night Train Softail 1998
Harley Davidson Softail Custom Softail 1986
Harley Davidson Softail Custom Softail 1987
Harley Davidson Softail Custom Softail 1989
Harley Davidson Softail Custom Softail 1993
Harley Davidson Softail Custom Softail 1999
Harley Davidson Softail Springer Softail 1988
Harley Davidson Softail Springer Softail 1989
Harley Davidson Softail Springer Softail 1991
Harley Davidson Wide Glide Big Twin 1985
Harley Davidson Wide Glide Big Twin 1986