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KB Performance Piston Kit - 3.538 in. Bore/9.5:1 Ratio - KB305.040

  • Part #: 1316514
  • Manufacturer Part #: KB305.040

MSRP Price: $209.95

Our Price: $198.99

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Overview of KB Performance Piston Kit - 3.538 in. Bore/9.5:1 Ratio - KB305.040

  • Originally designed by Keith Black, these pistons provide a tighter fit and longer piston and ring life
  • Made from high-strength T6 heat-treated, 390 hypereutectic alloy, then diamond-machined and held to plus or minus one gram weight and less than one-half-thousandth-inch (.0005 in.) tolerances from piston to piston
  • Each kit contains two pistons, pins, spiro-lock pin clips and Hastings moly rings
  • Replacement rings also available separately Part no. H1314R (enough for two pistons)
  • Replacement spiro-lock pin clips Part no. 148980 (4pk)
  • Made in the U.S.A.


  • Available Sizes:
    3.498 in./Standard - Part No. H13214
    3.503/+ .005 in. - Part No. H13205
    3.508/+ .010 in. - Part No. H13204
    3.518/+ .020 in. - Part No. H13217
    3.528/+ .030 in. - Part No. H13257
    3.538/+ .040 in. - Part No. 1316514

    Replacement Rings:
    3.498 in./Standard - Part No. H1310R
    3.503/+ .005 in. - Part No. H1318R
    3.508/+ .010 in. - Part No. H1311R
    3.518/+ .020 in. - Part No. H1312R
    3.528/+ .030 in. - Part No. H1313R
    3.538/+ .040 in. - Part No. H1314R

NOTE: KB pistons can be installed tighter than other pistons. This results in less piston rock and better ring seal. Please read instructions furnished with piston for correct piston clearance.

NOTE: 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.

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 Piston Kit - 3.538 in. Bore/9.5:1 Ratio - KB305.040

Bore Size 3.538 in.
Compression Ratio 9.5:1
Type - Pistons & Piston Rings Piston Kit
Units Each
Weight 2.80 lbs

Specs for KB Performance Piston Kit - 3.538 in. Bore/9.5:1 Ratio - KB305.040

Bore Size 3.538 in.
Compression Ratio 9.5:1
Type - Pistons & Piston Rings Piston Kit
Units Each
Weight 2.80 lbs

Fitment for KB Performance Piston Kit - 3.538 in. Bore/9.5:1 Ratio - KB305.040

See if this part fits your ride

Part 1316514 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
  • 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
  • 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
  • 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
  • 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
  • 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
  • 1987 Harley-Davidson Low Rider Sport - FXRS-SP
  • 1986 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
  • 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
  • 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
  • 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 Fat Bob - FXEF
  • 1991 Harley-Davidson Tour Glide Classic - FLTC
  • 1990 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

Piston Kit

4 out of 3 reviews
FitFinish:
Value:
Quality:
Style:


new pistons

Nice set of pistons and rings

Review By:

from Norton Shores,Mi

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Fit/Finish:
Value:
Quality:
Style:

Outstanding

Finish & Quality always from KB

Review By:

from K C - KS

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Fit/Finish:
Value:
Quality:
Style:

Good bang for buck.

Good kit for the money. Only real complaint is Keith Black piston pin retainer clips (spiral clips) are a pain in the butt to install compared to regular circlips! Once you get all 4 in though, you are a champ at it! One thing to note is, these pistons run tighter ad are slightly larger then stock by design. I order STD. Size to replace my stock ones, brought it to machine shop to be honed, and they did have to shave .001 off cylinder for them to fit correctly.

Review By:

from Northern Minnesota

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Instructions and Manuals for KB Performance Piston Kit - 3.538 in. Bore/9.5:1 Ratio - KB305.040

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