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KB Performance Forged Piston Kit - 3.508 in. Bore - KB921.010

  • Part #: 1314611
  • Manufacturer Part #: KB921.010

MSRP Price: $256.95

Our Price: $243.99

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Overview of KB Performance Forged Piston Kit - 3.508 in. Bore - KB921.010

  • Pistons forged from 4032 aluminum alloy
  • Offset pin design
  • Each kit contains two pistons, pins, spiro-lock pin clips and Hastings moly rings
  • Piston pin lock rings available separately; part no: 148980
  • Replacement rings are also available separately; part #H1311R
  • Made in the U.S.A.


  • Our pistons, rings and kits are sold by application and bore size. Please note that STANDARD and OVERSIZES are not indicated. To get the correct part, you must know the standard bore size to make sure you are ordering either the standard or correct amount of oversize that you need. If you have any questions, please call Technical Service.

Specs for KB Performance Forged Piston Kit - 3.508 in. Bore - KB921.010

Bore Size 3.508 in.
Compression Ratio 10.5:1
Type - Pistons & Piston Rings Piston Kit
Units Each
Weight 2.80 lbs

Specs for KB Performance Forged Piston Kit - 3.508 in. Bore - KB921.010

Bore Size 3.508 in.
Compression Ratio 10.5:1
Type - Pistons & Piston Rings Piston Kit
Units Each
Weight 2.80 lbs

Fitment for KB Performance Forged Piston Kit - 3.508 in. Bore - KB921.010

See if this part fits your ride

Part 1314611 fits the following machines

Harley-Davidson
  • 1984 Harley-Davidson Disc Glide - FXRDG
  • 1998 Harley-Davidson Dyna Convertible - FXDS-CONV
  • 1997 Harley-Davidson Dyna Convertible - FXDS-CONV
  • 1996 Harley-Davidson Dyna Convertible - FXDS-CONV
  • 1995 Harley-Davidson Dyna Convertible - FXDS-CONV
  • 1992 Harley-Davidson Dyna Daytona - FXDB
  • 1992 Harley-Davidson Dyna Glide Custom - FXDC
  • 1998 Harley-Davidson Dyna Low Rider - FXDL
  • 1997 Harley-Davidson Dyna Low Rider - FXDL
  • 1996 Harley-Davidson Dyna Low Rider - FXDL
  • 1995 Harley-Davidson Dyna Low Rider - FXDL
  • 1994 Harley-Davidson Dyna Low Rider - FXDL
  • 1993 Harley-Davidson Dyna Low Rider - FXDL
  • 1994 Harley-Davidson Dyna Low Rider Convertible - FXDS-CONV
  • 1991 Harley-Davidson Dyna Sturgis - FXDB
  • 1998 Harley-Davidson Dyna Super Glide - FXD
  • 1997 Harley-Davidson Dyna Super Glide - FXD
  • 1996 Harley-Davidson Dyna Super Glide - FXD
  • 1995 Harley-Davidson Dyna Super Glide - FXD
  • 1998 Harley-Davidson Dyna Wide Glide - FXDWG
  • 1997 Harley-Davidson Dyna Wide Glide - FXDWG
  • 1996 Harley-Davidson Dyna Wide Glide - FXDWG
  • 1995 Harley-Davidson Dyna Wide Glide - FXDWG
  • 1994 Harley-Davidson Dyna Wide Glide - FXDWG
  • 1993 Harley-Davidson Dyna Wide Glide - FXDWG
  • 1987 Harley-Davidson Electra Glide - FLHT
  • 1986 Harley-Davidson Electra Glide - FLHT
  • 1985 Harley-Davidson Electra Glide - FLHT
  • 1998 Harley-Davidson Electra Glide Classic - FLHTC
  • 1997 Harley-Davidson Electra Glide Classic - FLHTC
  • 1996 Harley-Davidson Electra Glide Classic - FLHTC
  • 1995 Harley-Davidson Electra Glide Classic - FLHTC
  • 1994 Harley-Davidson Electra Glide Classic - FLHTC
  • 1993 Harley-Davidson Electra Glide Classic - FLHTC
  • 1992 Harley-Davidson Electra Glide Classic - FLHTC
  • 1991 Harley-Davidson Electra Glide Classic - FLHTC
  • 1990 Harley-Davidson Electra Glide Classic - FLHTC
  • 1989 Harley-Davidson Electra Glide Classic - FLHTC
  • 1988 Harley-Davidson Electra Glide Classic - FLHTC
  • 1987 Harley-Davidson Electra Glide Classic - FLHTC
  • 1986 Harley-Davidson Electra Glide Classic - FLHTC
  • 1985 Harley-Davidson Electra Glide Classic - FLHTC
  • 1984 Harley-Davidson Electra Glide Classic - FLHTC
  • 1998 Harley-Davidson Electra Glide Classic Injected - FLHTC I
  • 1997 Harley-Davidson Electra Glide Classic Injected - FLHTC I
  • 1996 Harley-Davidson Electra Glide Classic Injected - FLHTC I
  • 1993 Harley-Davidson Electra Glide Sport - FLHS
  • 1992 Harley-Davidson Electra Glide Sport - FLHS
  • 1991 Harley-Davidson Electra Glide Sport - FLHS
  • 1990 Harley-Davidson Electra Glide Sport - FLHS
  • 1989 Harley-Davidson Electra Glide Sport - FLHS
  • 1988 Harley-Davidson Electra Glide Sport - FLHS
  • 1987 Harley-Davidson Electra Glide Sport - FLHS
  • 1998 Harley-Davidson Electra Glide Standard - FLHT
  • 1997 Harley-Davidson Electra Glide Standard - FLHT
  • 1996 Harley-Davidson Electra Glide Standard - FLHT
  • 1995 Harley-Davidson Electra Glide Standard - FLHT
  • 1998 Harley-Davidson Electra Glide Ultra Classic - FLHTCU
  • 1997 Harley-Davidson Electra Glide Ultra Classic - FLHTCU
  • 1996 Harley-Davidson Electra Glide Ultra Classic - FLHTCU
  • 1995 Harley-Davidson Electra Glide Ultra Classic - FLHTCU
  • 1994 Harley-Davidson Electra Glide Ultra Classic - FLHTCU
  • 1993 Harley-Davidson Electra Glide Ultra Classic - FLHTCU
  • 1992 Harley-Davidson Electra Glide Ultra Classic - FLHTCU
  • 1991 Harley-Davidson Electra Glide Ultra Classic - FLHTCU
  • 1990 Harley-Davidson Electra Glide Ultra Classic - FLHTCU
  • 1989 Harley-Davidson Electra Glide Ultra Classic - FLHTCU
  • 1998 Harley-Davidson Electra Glide Ultra Classic Injected - FLHTCU I
  • 1997 Harley-Davidson Electra Glide Ultra Classic Injected - FLHTCU I
  • 1996 Harley-Davidson Electra Glide Ultra Classic Injected - FLHTCU I
  • 1995 Harley-Davidson Electra Glide Ultra Classic Injected - FLHTCU I
  • 1999 Harley-Davidson FXR 2
  • 1999 Harley-Davidson FXR 3
  • 2000 Harley-Davidson FXR 4
  • 1990 Harley-Davidson Heritage Softail - FLST
  • 1989 Harley-Davidson Heritage Softail - FLST
  • 1988 Harley-Davidson Heritage Softail - FLST
  • 1987 Harley-Davidson Heritage Softail - FLST
  • 1986 Harley-Davidson Heritage Softail - FLST
  • 1999 Harley-Davidson Heritage Softail Classic - FLSTC
  • 1998 Harley-Davidson Heritage Softail Classic - FLSTC
  • 1997 Harley-Davidson Heritage Softail Classic - FLSTC
  • 1996 Harley-Davidson Heritage Softail Classic - FLSTC
  • 1995 Harley-Davidson Heritage Softail Classic - FLSTC
  • 1994 Harley-Davidson Heritage Softail Classic - FLSTC
  • 1993 Harley-Davidson Heritage Softail Classic - FLSTC
  • 1992 Harley-Davidson Heritage Softail Classic - FLSTC
  • 1991 Harley-Davidson Heritage Softail Classic - FLSTC
  • 1990 Harley-Davidson Heritage Softail Classic - FLSTC
  • 1989 Harley-Davidson Heritage Softail Classic - FLSTC
  • 1988 Harley-Davidson Heritage Softail Classic - FLSTC
  • 1987 Harley-Davidson Heritage Softail Classic - FLSTC
  • 1993 Harley-Davidson Heritage Softail Nostalgia - FLSTN
  • 1996 Harley-Davidson Heritage Softail Special - FLSTN
  • 1995 Harley-Davidson Heritage Softail Special - FLSTN
  • 1994 Harley-Davidson Heritage Softail Special - FLSTN
  • 1999 Harley-Davidson Heritage Softail Springer - FLSTS
  • 1998 Harley-Davidson Heritage Softail Springer - FLSTS
  • 1997 Harley-Davidson Heritage Softail Springer - FLSTS
  • 1985 Harley-Davidson Low Glide - FXRS
  • 1984 Harley-Davidson Low Glide - FXRS
  • 1985 Harley-Davidson Low Glide Custom - FXRC
  • 1993 Harley-Davidson Low Rider - FXRS
  • 1992 Harley-Davidson Low Rider - FXRS
  • 1991 Harley-Davidson Low Rider - FXRS
  • 1990 Harley-Davidson Low Rider - FXRS
  • 1989 Harley-Davidson Low Rider - FXRS
  • 1988 Harley-Davidson Low Rider - FXRS
  • 1987 Harley-Davidson Low Rider - FXRS
  • 1986 Harley-Davidson Low Rider - FXRS
  • 1985 Harley-Davidson Low Rider - FXSB
  • 1987 Harley-Davidson Low Rider Chrome - FXRC
  • 1993 Harley-Davidson Low Rider Convertible - FXRS-CONV
  • 1992 Harley-Davidson Low Rider Convertible - FXRS-CONV
  • 1991 Harley-Davidson Low Rider Convertible - FXRS-CONV
  • 1990 Harley-Davidson Low Rider Convertible - FXRS-CONV
  • 1994 Harley-Davidson Low Rider Custom - FXLR
  • 1993 Harley-Davidson Low Rider Custom - FXLR
  • 1992 Harley-Davidson Low Rider Custom - FXLR
  • 1991 Harley-Davidson Low Rider Custom - FXLR
  • 1990 Harley-Davidson Low Rider Custom - FXLR
  • 1989 Harley-Davidson Low Rider Custom - FXLR
  • 1988 Harley-Davidson Low Rider Custom - FXLR
  • 1987 Harley-Davidson Low Rider Custom - FXLR
  • 1993 Harley-Davidson Low Rider Sport - FXRS-SP
  • 1992 Harley-Davidson Low Rider Sport - FXRS-SP
  • 1991 Harley-Davidson Low Rider Sport - FXRS-SP
  • 1990 Harley-Davidson Low Rider Sport - FXRS-SP
  • 1989 Harley-Davidson Low Rider Sport - FXRS-SP
  • 1988 Harley-Davidson Low Rider Sport - FXRS-SP
  • 1998 Harley-Davidson Road Glide - FLTR
  • 1998 Harley-Davidson Road Glide Injected - FLTR I
  • 1998 Harley-Davidson Road King - FLHR
  • 1997 Harley-Davidson Road King - FLHR
  • 1996 Harley-Davidson Road King - FLHR
  • 1995 Harley-Davidson Road King - FLHR
  • 1994 Harley-Davidson Road King - FLHR
  • 1998 Harley-Davidson Road King Classic Injected - FLHRC I
  • 1998 Harley-Davidson Road King Injected - FLHR I
  • 1997 Harley-Davidson Road King Injected - FLHR I
  • 1996 Harley-Davidson Road King Injected - FLHR I
  • 1993 Harley-Davidson Softail - FXST
  • 1992 Harley-Davidson Softail - FXST
  • 1991 Harley-Davidson Softail - FXST
  • 1990 Harley-Davidson Softail - FXST
  • 1989 Harley-Davidson Softail - FXST
  • 1988 Harley-Davidson Softail - FXST
  • 1987 Harley-Davidson Softail - FXST
  • 1986 Harley-Davidson Softail - FXST
  • 1985 Harley-Davidson Softail - FXST
  • 1984 Harley-Davidson Softail - FXST
  • 1999 Harley-Davidson Softail Custom - FXSTC
  • 1998 Harley-Davidson Softail Custom - FXSTC
  • 1997 Harley-Davidson Softail Custom - FXSTC
  • 1996 Harley-Davidson Softail Custom - FXSTC
  • 1995 Harley-Davidson Softail Custom - FXSTC
  • 1994 Harley-Davidson Softail Custom - FXSTC
  • 1993 Harley-Davidson Softail Custom - FXSTC
  • 1992 Harley-Davidson Softail Custom - FXSTC
  • 1991 Harley-Davidson Softail Custom - FXSTC
  • 1990 Harley-Davidson Softail Custom - FXSTC
  • 1989 Harley-Davidson Softail Custom - FXSTC
  • 1988 Harley-Davidson Softail Custom - FXSTC
  • 1987 Harley-Davidson Softail Custom - FXSTC
  • 1986 Harley-Davidson Softail Custom - FXSTC
  • 1999 Harley-Davidson Softail Fat Boy - FLSTF
  • 1998 Harley-Davidson Softail Fat Boy - FLSTF
  • 1997 Harley-Davidson Softail Fat Boy - FLSTF
  • 1996 Harley-Davidson Softail Fat Boy - FLSTF
  • 1995 Harley-Davidson Softail Fat Boy - FLSTF
  • 1994 Harley-Davidson Softail Fat Boy - FLSTF
  • 1993 Harley-Davidson Softail Fat Boy - FLSTF
  • 1992 Harley-Davidson Softail Fat Boy - FLSTF
  • 1991 Harley-Davidson Softail Fat Boy - FLSTF
  • 1990 Harley-Davidson Softail Fat Boy - FLSTF
  • 1999 Harley-Davidson Softail Night Train - FXSTB
  • 1999 Harley-Davidson Softail Springer - FXSTS
  • 1998 Harley-Davidson Softail Springer - FXSTS
  • 1997 Harley-Davidson Softail Springer - FXSTS
  • 1996 Harley-Davidson Softail Springer - FXSTS
  • 1995 Harley-Davidson Softail Springer - FXSTS
  • 1994 Harley-Davidson Softail Springer - FXSTS
  • 1993 Harley-Davidson Softail Springer - FXSTS
  • 1992 Harley-Davidson Softail Springer - FXSTS
  • 1991 Harley-Davidson Softail Springer - FXSTS
  • 1990 Harley-Davidson Softail Springer - FXSTS
  • 1989 Harley-Davidson Softail Springer - FXSTS
  • 1988 Harley-Davidson Softail Springer - FXSTS
  • 1997 Harley-Davidson Softail Springer Bad Boy - FXSTSB
  • 1996 Harley-Davidson Softail Springer Bad Boy - FXSTSB
  • 1995 Harley-Davidson Softail Springer Bad Boy - FXSTSB
  • 1999 Harley-Davidson Softail Standard - FXST
  • 1993 Harley-Davidson Sport Glide - FXRT
  • 1992 Harley-Davidson Sport Glide - FXRT
  • 1991 Harley-Davidson Sport Glide - FXRT
  • 1990 Harley-Davidson Sport Glide - FXRT
  • 1989 Harley-Davidson Sport Glide - FXRT
  • 1988 Harley-Davidson Sport Glide - FXRT
  • 1987 Harley-Davidson Sport Glide - FXRT
  • 1986 Harley-Davidson Sport Glide - FXRT
  • 1985 Harley-Davidson Sport Glide - FXRT
  • 1984 Harley-Davidson Sport Glide - FXRT
  • 1986 Harley-Davidson Sport Glide Grand Touring - FXRD
  • 1994 Harley-Davidson Super Glide - FXR
  • 1993 Harley-Davidson Super Glide - FXR
  • 1992 Harley-Davidson Super Glide - FXR
  • 1991 Harley-Davidson Super Glide - FXR
  • 1990 Harley-Davidson Super Glide - FXR
  • 1989 Harley-Davidson Super Glide - FXR
  • 1988 Harley-Davidson Super Glide - FXR
  • 1987 Harley-Davidson Super Glide - FXR
  • 1986 Harley-Davidson Super Glide - FXR
  • 1985 Harley-Davidson Super Glide - FXR
  • 1984 Harley-Davidson Super Glide - FXR
  • 1985 Harley-Davidson Super Glide Fat Bob - FXEF
  • 1994 Harley-Davidson Tour Glide Classic - FLTC
  • 1993 Harley-Davidson Tour Glide Classic - FLTC
  • 1992 Harley-Davidson Tour Glide Classic - FLTC
  • 1991 Harley-Davidson Tour Glide Classic - FLTC
  • 1990 Harley-Davidson Tour Glide Classic - FLTC
  • 1989 Harley-Davidson Tour Glide Classic - FLTC
  • 1988 Harley-Davidson Tour Glide Classic - FLTC
  • 1987 Harley-Davidson Tour Glide Classic - FLTC
  • 1986 Harley-Davidson Tour Glide Classic - FLTC
  • 1985 Harley-Davidson Tour Glide Classic - FLTC
  • 1984 Harley-Davidson Tour Glide Classic - FLTC
  • 1995 Harley-Davidson Tour Glide Ultra Classic - FLTCU
  • 1994 Harley-Davidson Tour Glide Ultra Classic - FLTCU
  • 1993 Harley-Davidson Tour Glide Ultra Classic - FLTCU
  • 1992 Harley-Davidson Tour Glide Ultra Classic - FLTCU
  • 1991 Harley-Davidson Tour Glide Ultra Classic - FLTCU
  • 1990 Harley-Davidson Tour Glide Ultra Classic - FLTCU
  • 1989 Harley-Davidson Tour Glide Ultra Classic - FLTCU
  • 1996 Harley-Davidson Tour Glide Ultra Classic Injected - FLTCU I
  • 1986 Harley-Davidson Wide Glide - FXWG
  • 1985 Harley-Davidson Wide Glide - FXWG
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Instructions and Manuals for KB Performance Forged Piston Kit - 3.508 in. Bore - KB921.010

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