S&S Cycle 84-99 BT 89in Low Compression Stroker Pistons - Standard

These low compression 3-1/2" bore forged stroker pistons for 1984-'99 HD® big twins are a low compression option for 89" stroker kits for 1984-'99 with 4-5/8" stroke flywheels and S&S® Super Stock heads. 10.5:1 compression . Standard bore.

These S&S Cycle low compression forged pistons are designed specifically for 1984 to 1999 Harley Davidson big twin models equipped with 89-inch stroker kits. Crafted for optimal performance, these pistons feature a 3-1/2 inch bore and are compatible with 4-5/8 inch stroke flywheels paired with S&S Super Stock heads. With a compression ratio of 10.5:1, they provide a reliable balance of power and durability for custom motorcycle builds and performance upgrades. Made from high-quality forged aluminum, these pistons ensure strength and longevity even under demanding riding conditions. They are engineered to fit standard bore applications, making installation straightforward for experienced technicians and enthusiasts alike. These pistons are ideal for riders seeking a low compression option that enhances torque and throttle response without sacrificing engine reliability. The design emphasizes compatibility with a broad range of Harley Davidson models, including Electra Glide Sport and Super Glide II variants from 1984 through 1990, ensuring a versatile fit for many popular bikes of that era. This part is not carburetor approved and requires carb acknowledgment during installation, aligning with specific performance and compliance standards. The pistons are lightweight yet robust, contributing to smoother engine operation and improved overall performance. Whether you're rebuilding an existing engine or customizing a new build, these pistons from S&S Cycle offer a high-performance solution tailored for Harley Davidson big twins, promising consistent power delivery and long-term durability. Please note that these pistons are air freight prohibited and are intended for professional installation within the powersports sector. Trust S&S Cycle for quality, innovation, and performance in your motorcycle projects.

Features:

• Forged aluminum construction for strength and durability

• Designed for 1984-1999 Harley Davidson big twin models

• Compatible with 89-inch stroker kits and standard bore applications

• Compression ratio of 10.5:1 for balanced power and reliability

• Fits models including Electra Glide Sport and Super Glide II from 1984 to 1990

• Low compression design to enhance torque and throttle response

• Engineered for performance and longevity in demanding conditions

• Requires carb acknowledgment during installation

• Not carb approved, intended for professional use

Fitment:
Harley Davidson FLHR Road King Base 1994
Harley Davidson FLHR Road King Base 1995
Harley Davidson FLHR Road King Base 1996
Harley Davidson FLHR Road King Base 1997
Harley Davidson FLHR Road King Base 1998
Harley Davidson FLHS Electra Glide Sport Base 1984
Harley Davidson FLHS Electra Glide Sport Base 1987
Harley Davidson FLHS Electra Glide Sport Base 1988
Harley Davidson FLHS Electra Glide Sport Base 1989
Harley Davidson FLHS Electra Glide Sport Base 1990
Harley Davidson FLHS Electra Glide Sport Base 1991
Harley Davidson FLHS Electra Glide Sport Base 1992
Harley Davidson FLHS Electra Glide Sport Base 1993
Harley Davidson FLHT Electra Glide Standard Base 1986
Harley Davidson FLHT Electra Glide Standard Base 1987
Harley Davidson FLHT Electra Glide Standard Base 1988
Harley Davidson FLHT Electra Glide Standard Base 1989
Harley Davidson FLHT Electra Glide Standard Base 1990
Harley Davidson FLHT Electra Glide Standard Base 1991
Harley Davidson FLHT Electra Glide Standard Base 1992
Harley Davidson FLHT Electra Glide Standard Base 1993
Harley Davidson FLHT Electra Glide Standard Base 1994
Harley Davidson FLHT Electra Glide Standard Base 1995
Harley Davidson FLHT Electra Glide Standard Base 1996
Harley Davidson FLHT Electra Glide Standard Base 1997
Harley Davidson FLHT Electra Glide Standard Base 1998
Harley Davidson FLHTC Electra Glide Classic Base 1989
Harley Davidson FLHTC Electra Glide Classic Base 1990
Harley Davidson FLHTC Electra Glide Classic Base 1991
Harley Davidson FLHTC Electra Glide Classic Base 1992
Harley Davidson FLHTC Electra Glide Classic Base 1993
Harley Davidson FLHTC Electra Glide Classic Base 1994
Harley Davidson FLHTC Electra Glide Classic Base 1995
Harley Davidson FLHTC Electra Glide Classic Base 1996
Harley Davidson FLHTC Electra Glide Classic Base 1997
Harley Davidson FLST Heritage Softail Base 1986
Harley Davidson FLST Heritage Softail Base 1987
Harley Davidson FLST Heritage Softail Base 1988
Harley Davidson FLST Heritage Softail Base 1989
Harley Davidson FLST Heritage Softail Base 1990
Harley Davidson FLSTC Heritage Softail Classic Base 1988
Harley Davidson FLSTC Heritage Softail Classic Base 1989
Harley Davidson FLSTC Heritage Softail Classic Base 1990
Harley Davidson FLSTC Heritage Softail Classic Base 1991
Harley Davidson FLSTC Heritage Softail Classic Base 1992
Harley Davidson FLSTC Heritage Softail Classic Base 1993
Harley Davidson FLSTC Heritage Softail Classic Base 1994
Harley Davidson FLSTC Heritage Softail Classic Base 1995
Harley Davidson FLSTC Heritage Softail Classic Base 1996
Harley Davidson FLSTC Heritage Softail Classic Base 1997
Harley Davidson FLSTC Heritage Softail Classic Base 1998
Harley Davidson FLSTC Heritage Softail Classic Base 1999
Harley Davidson FLSTF Fat Boy Base 1990
Harley Davidson FLSTF Fat Boy Base 1991
Harley Davidson FLSTF Fat Boy Base 1992
Harley Davidson FLSTF Fat Boy Base 1993
Harley Davidson FLSTF Fat Boy Base 1994
Harley Davidson FLSTF Fat Boy Base 1995
Harley Davidson FLSTF Fat Boy Base 1996
Harley Davidson FLSTF Fat Boy Base 1997
Harley Davidson FLSTF Fat Boy Base 1998
Harley Davidson FLSTF Fat Boy Base 1999
Harley Davidson FLSTN Heritage Softail Nostalgia Base 1993
Harley Davidson FLSTN Heritage Softail Special Base 1994
Harley Davidson FLSTN Heritage Softail Special Base 1995
Harley Davidson FLSTN Heritage Softail Special Base 1996
Harley Davidson FLSTS Heritage Springer Base 1997
Harley Davidson FLSTS Heritage Springer Base 1998
Harley Davidson FLSTS Heritage Springer Base 1999
Harley Davidson FLTC Tour Glide Classic Base 1989
Harley Davidson FLTC Tour Glide Classic Base 1990
Harley Davidson FLTC Tour Glide Classic Base 1991
Harley Davidson FLTC Tour Glide Classic Base 1992
Harley Davidson FLTC Tour Glide Classic Base 1993
Harley Davidson FLTCUI Tour Glide Ultra Classic Base 1996
Harley Davidson FLTR Road Glide Base 1998
Harley Davidson FXD Dyna Super Glide Base 1995
Harley Davidson FXD Dyna Super Glide Base 1996
Harley Davidson FXD Dyna Super Glide Base 1997
Harley Davidson FXD Dyna Super Glide Base 1998
Harley Davidson FXDB-D Dyna Glide Daytona Base 1992
Harley Davidson FXDC Super Glide Custom Base 1992
Harley Davidson FXDL Dyna Low Rider Base 1993
Harley Davidson FXDL Dyna Low Rider Base 1994
Harley Davidson FXDL Dyna Low Rider Base 1995
Harley Davidson FXDL Dyna Low Rider Base 1996
Harley Davidson FXDL Dyna Low Rider Base 1997
Harley Davidson FXDL Dyna Low Rider Base 1998
Harley Davidson FXDWG Dyna Wide Glide Base 1993
Harley Davidson FXDWG Dyna Wide Glide Base 1994
Harley Davidson FXDWG Dyna Wide Glide Base 1995
Harley Davidson FXDWG Dyna Wide Glide Base 1996
Harley Davidson FXDWG Dyna Wide Glide Base 1997
Harley Davidson FXDWG Dyna Wide Glide Base 1998
Harley Davidson FXR Super Glide II Base 1986
Harley Davidson FXR Super Glide II Base 1987
Harley Davidson FXR Super Glide II Base 1988
Harley Davidson FXR Super Glide II Base 1989
Harley Davidson FXR Super Glide II Base 1990
Harley Davidson FXR Super Glide II Base 1991
Harley Davidson FXR Super Glide II Base 1992
Harley Davidson FXR Super Glide II Base 1993
Harley Davidson FXR Super Glide II Base 1994
Harley Davidson FXST Softail Standard Base 1984
Harley Davidson FXST Softail Standard Base 1985
Harley Davidson FXST Softail Standard Base 1986
Harley Davidson FXST Softail Standard Base 1987
Harley Davidson FXST Softail Standard Base 1988
Harley Davidson FXST Softail Standard Base 1989
Harley Davidson FXST Softail Standard Base 1990
Harley Davidson FXST Softail Standard Base 1991
Harley Davidson FXST Softail Standard Base 1992
Harley Davidson FXST Softail Standard Base 1993
Harley Davidson FXST Softail Standard Base 1994
Harley Davidson FXST Softail Standard Base 1995
Harley Davidson FXST Softail Standard Base 1996
Harley Davidson FXST Softail Standard Base 1997
Harley Davidson FXST Softail Standard Base 1998
Harley Davidson FXST Softail Standard Base 1999
Harley Davidson FXSTB Night Train Base 1999
Harley Davidson FXSTS Springer Softail Base 1988
Harley Davidson FXSTS Springer Softail Base 1989
Harley Davidson FXSTS Springer Softail Base 1990
Harley Davidson FXSTS Springer Softail Base 1991
Harley Davidson FXSTS Springer Softail Base 1992
Harley Davidson FXSTS Springer Softail Base 1993
Harley Davidson FXSTS Springer Softail Base 1994
Harley Davidson FXSTS Springer Softail Base 1995
Harley Davidson FXSTS Springer Softail Base 1996
Harley Davidson FXSTS Springer Softail Base 1997
Harley Davidson FXSTS Springer Softail Base 1998
Harley Davidson FXSTS Springer Softail Base 1999
Harley Davidson FXSTSB Bad Boy Base 1995
Harley Davidson FXSTSB Bad Boy Base 1996
Harley Davidson FXSTSB Bad Boy Base 1997