S&S Cycle 3-1/2 in. +.010 in. Bore Forged Stroker Piston Kit, Model 84-99 BT, Part 106-5555

These forged 3-1/2" bore stroker pistons for 1984-'99 HD® Evolution® big twin engines are required for the S&S 89" stock bore stroker kits, which include S&S 4-5/8" stroke flywheels. Pistons are designed to be used with stock cylinder heads or with S&S Performance Replacement heads. Low silicon forged material and advanced S&S piston skirt design result in high strengh and low noise. 3-1/2" +.010" bore.

The S&S Cycle 3-1/2 in. +.010 in. bore forged stroker piston kit is designed for 1984–1999 Harley-Davidson Evolution big twin engines. These pistons are required for S&S 89 in. stock-bore stroker kits, which include S&S 4-5/8 in. stroke flywheels. The pistons are designed for use with stock cylinder heads or S&S Performance Replacement heads.

Constructed from low-silicon forged material, the pistons feature an advanced S&S piston skirt design intended to provide high strength and low noise. The kit has a 3-1/2 in. bore with a +.010 in. oversize. Manufacturer part number: 106-5555. Vendor part number: 106-5555.

Fitment includes the 1990 Harley-Davidson FLHS Electra Glide Sport, FLHTCU Electra Glide Ultra Classic, FLST Heritage Softail, FLSTC Heritage Softail Classic, FLSTF Fat Boy, FXLR Low Rider Custom, FXRT Sport Glide, FXSTC Softail Custom and FXSTS Springer Softail, as well as the 1991 Harley-Davidson FLHS Electra Glide Sport. Verify engine and application details before installation.

Features:

• Bore: 3-1/2 in. +.010 in. bore
• Construction: Low-silicon forged material
• Design: Advanced S&S piston skirt design for high strength and low noise
• Application: 1984–1999 Harley-Davidson Evolution big twin engines
• Stroker Kit Use: Required for S&S 89 in. stock-bore stroker kits with S&S 4-5/8 in. stroke flywheels
• Cylinder Head Compatibility: Designed for stock cylinder heads or S&S Performance Replacement heads
• Fitment: 1990–1991 Harley-Davidson applications listed in the product description
• Manufacturer Part Number: 106-5555
• Vendor Part Number: 106-5555

Air Freight Prohibited: false
Not Carb Approved: true
Carb Acknowledgement Required: true
Ltl Freight Required: false
Prop 65: Unknown
Part Type: powersports
Epa: N/A
Regular Stock: false
Units Per Sku: 1
Fitment:
1984 Harley Davidson FLHS Electra Glide Sport Base
1984 Harley Davidson FXRS Low Glide Base
1984 Harley Davidson FXRT Sport Glide Base
1984 Harley Davidson FXST Softail Standard Base
1984 Harley Davidson FXWG Wide Glide Base
1985 Harley Davidson FXRS Low Glide Base
1985 Harley Davidson FXRT Sport Glide Base
1985 Harley Davidson FXST Softail Standard Base
1985 Harley Davidson FXWG Wide Glide Base
1986 Harley Davidson FLST Heritage Softail Base
1986 Harley Davidson FXRS Low Glide Base
1986 Harley Davidson FXRT Sport Glide Base
1986 Harley Davidson FXST Softail Standard Base
1986 Harley Davidson FXSTC Softail Custom Base
1986 Harley Davidson FXWG Wide Glide Base
1987 Harley Davidson FLHS Electra Glide Sport Base
1987 Harley Davidson FLST Heritage Softail Base
1987 Harley Davidson FXLR Low Rider Custom Base
1987 Harley Davidson FXRS Low Glide Base
1987 Harley Davidson FXRT Sport Glide Base
1987 Harley Davidson FXST Softail Standard Base
1987 Harley Davidson FXSTC Softail Custom Base
1988 Harley Davidson FLHS Electra Glide Sport Base
1988 Harley Davidson FLST Heritage Softail Base
1988 Harley Davidson FLSTC Heritage Softail Classic Base
1988 Harley Davidson FXLR Low Rider Custom Base
1988 Harley Davidson FXRS Low Glide Base
1988 Harley Davidson FXRT Sport Glide Base
1988 Harley Davidson FXST Softail Standard Base
1988 Harley Davidson FXSTC Softail Custom Base
1988 Harley Davidson FXSTS Springer Softail Base
1989 Harley Davidson FLHS Electra Glide Sport Base
1989 Harley Davidson FLHTCU Electra Glide Ultra Classic Base
1989 Harley Davidson FLST Heritage Softail Base
1989 Harley Davidson FLSTC Heritage Softail Classic Base
1989 Harley Davidson FXLR Low Rider Custom Base
1989 Harley Davidson FXRS Low Glide Base
1989 Harley Davidson FXRT Sport Glide Base
1989 Harley Davidson FXST Softail Standard Base
1989 Harley Davidson FXSTC Softail Custom Base
1989 Harley Davidson FXSTS Springer Softail Base
1990 Harley Davidson FLHS Electra Glide Sport Base
1990 Harley Davidson FLHTCU Electra Glide Ultra Classic Base
1990 Harley Davidson FLST Heritage Softail Base
1990 Harley Davidson FLSTC Heritage Softail Classic Base
1990 Harley Davidson FLSTF Fat Boy Base
1990 Harley Davidson FXLR Low Rider Custom Base
1990 Harley Davidson FXRS Low Glide Base
1990 Harley Davidson FXRT Sport Glide Base
1990 Harley Davidson FXST Softail Standard Base
1990 Harley Davidson FXSTC Softail Custom Base
1990 Harley Davidson FXSTS Springer Softail Base
1991 Harley Davidson FLHS Electra Glide Sport Base
1991 Harley Davidson FLHTCU Electra Glide Ultra Classic Base
1991 Harley Davidson FLSTC Heritage Softail Classic Base
1991 Harley Davidson FLSTF Fat Boy Base
1991 Harley Davidson FXLR Low Rider Custom Base
1991 Harley Davidson FXRS Low Glide Base
1991 Harley Davidson FXRT Sport Glide Base
1991 Harley Davidson FXST Softail Standard Base
1991 Harley Davidson FXSTC Softail Custom Base
1991 Harley Davidson FXSTS Springer Softail Base
1992 Harley Davidson FLHS Electra Glide Sport Base
1992 Harley Davidson FLHTCU Electra Glide Ultra Classic Base
1992 Harley Davidson FLSTC Heritage Softail Classic Base
1992 Harley Davidson FLSTF Fat Boy Base
1992 Harley Davidson FXLR Low Rider Custom Base
1992 Harley Davidson FXRS Low Glide Base
1992 Harley Davidson FXRT Sport Glide Base
1992 Harley Davidson FXST Softail Standard Base
1992 Harley Davidson FXSTC Softail Custom Base
1992 Harley Davidson FXSTS Springer Softail Base
1993 Harley Davidson FLHS Electra Glide Sport Base
1993 Harley Davidson FLHTCU Electra Glide Ultra Classic Base
1993 Harley Davidson FLSTC Heritage Softail Classic Base
1993 Harley Davidson FLSTF Fat Boy Base
1993 Harley Davidson FXDL Dyna Low Rider Base
1993 Harley Davidson FXDWG Dyna Wide Glide Base
1993 Harley Davidson FXLR Low Rider Custom Base
1993 Harley Davidson FXST Softail Standard Base
1993 Harley Davidson FXSTC Softail Custom Base
1993 Harley Davidson FXSTS Springer Softail Base
1994 Harley Davidson FLHTCU Electra Glide Ultra Classic Base
1994 Harley Davidson FLSTC Heritage Softail Classic Base
1994 Harley Davidson FLSTF Fat Boy Base
1994 Harley Davidson FLSTN Heritage Softail Special Base
1994 Harley Davidson FXDL Dyna Low Rider Base
1994 Harley Davidson FXDWG Dyna Wide Glide Base
1994 Harley Davidson FXLR Low Rider Custom Base
1994 Harley Davidson FXST Softail Standard Base
1994 Harley Davidson FXSTC Softail Custom Base
1994 Harley Davidson FXSTS Springer Softail Base
1995 Harley Davidson FLHTCU Electra Glide Ultra Classic Base
1995 Harley Davidson FLSTC Heritage Softail Classic Base
1995 Harley Davidson FLSTF Fat Boy Base
1995 Harley Davidson FLSTN Heritage Softail Special Base
1995 Harley Davidson FXD Dyna Super Glide Base
1995 Harley Davidson FXDL Dyna Low Rider Base
1995 Harley Davidson FXDWG Dyna Wide Glide Base
1995 Harley Davidson FXST Softail Standard Base
1995 Harley Davidson FXSTC Softail Custom Base
1995 Harley Davidson FXSTS Springer Softail Base
1995 Harley Davidson FXSTSB Bad Boy Base
1996 Harley Davidson FLHRI Road King Base
1996 Harley Davidson FLHTCI Electra Glide Classic Base
1996 Harley Davidson FLHTCU Electra Glide Ultra Classic Base
1996 Harley Davidson FLSTC Heritage Softail Classic Base
1996 Harley Davidson FLSTF Fat Boy Base
1996 Harley Davidson FLSTN Heritage Softail Special Base
1996 Harley Davidson FXD Dyna Super Glide Base
1996 Harley Davidson FXDL Dyna Low Rider Base
1996 Harley Davidson FXDWG Dyna Wide Glide Base
1996 Harley Davidson FXST Softail Standard Base
1996 Harley Davidson FXSTC Softail Custom Base
1996 Harley Davidson FXSTS Springer Softail Base
1996 Harley Davidson FXSTSB Bad Boy Base
1997 Harley Davidson FLHR Road King Base
1997 Harley Davidson FLHRI Road King Base
1997 Harley Davidson FLHTCI Electra Glide Classic Base
1997 Harley Davidson FLHTCU Electra Glide Ultra Classic Base
1997 Harley Davidson FLSTC Heritage Softail Classic Base
1997 Harley Davidson FLSTF Fat Boy Base
1997 Harley Davidson FXD Dyna Super Glide Base
1997 Harley Davidson FXDL Dyna Low Rider Base
1997 Harley Davidson FXDWG Dyna Wide Glide Base
1997 Harley Davidson FXST Softail Standard Base
1997 Harley Davidson FXSTC Softail Custom Base
1997 Harley Davidson FXSTS Springer Softail Base
1997 Harley Davidson FXSTSB Bad Boy Base
1998 Harley Davidson FLHR Road King Base
1998 Harley Davidson FLHRCI Road King Classic Base
1998 Harley Davidson FLHTCI Electra Glide Classic Base
1998 Harley Davidson FLSTC Heritage Softail Classic Base
1998 Harley Davidson FLSTF Fat Boy Base
1998 Harley Davidson FLTR Road Glide Base
1998 Harley Davidson FLTRI Road Glide Base
1998 Harley Davidson FXD Dyna Super Glide Base
1998 Harley Davidson FXDL Dyna Low Rider Base
1998 Harley Davidson FXDWG Dyna Wide Glide Base
1998 Harley Davidson FXST Softail Standard Base
1998 Harley Davidson FXSTC Softail Custom Base
1998 Harley Davidson FXSTS Springer Softail Base
1999 Harley Davidson FLHR Road King Base
1999 Harley Davidson FLHRCI Road King Classic Base
1999 Harley Davidson FLHTCI Electra Glide Classic Base
1999 Harley Davidson FLSTC Heritage Softail Classic Base
1999 Harley Davidson FLSTF Fat Boy Base
1999 Harley Davidson FLTR Road Glide Base
1999 Harley Davidson FLTRI Road Glide Base
1999 Harley Davidson FXD Dyna Super Glide Base
1999 Harley Davidson FXDL Dyna Low Rider Base
1999 Harley Davidson FXDWG Dyna Wide Glide Base
1999 Harley Davidson FXR2 Base
1999 Harley Davidson FXR3 Base
1999 Harley Davidson FXST Softail Standard Base
1999 Harley Davidson FXSTB Night Train Base
1999 Harley Davidson FXSTC Softail Custom Base
1999 Harley Davidson FXSTS Springer Softail Base