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KB Pistons Cast Pistons Evo 80CI 9.6:1 .030


KB Pistons

Model #KB305.030

Shopper Award

KB Hypereutectic alloy pistons are cast with a 16% high silicon content that has very high thermal barrier properties along with a low thermal expansion rate, allowing tight piston to cylinder wall clearances. This makes them ideal for air-cooled engines, offering optimal ring seal, quieter engine running and reduced wear. Hypereutectics are best suited for stock or mild compression ratios up to 10.5:1 running on pump fuel.


  • Harley-Davidson FLHTCU Electra Glide Ultra Classic 1989
  • Harley-Davidson FXR Super Glide 1988-1994
  • Harley-Davidson FXD Dyna Super Glide 1995-1998
  • Harley-Davidson FXDB-D Dyna Glide Daytona 1992
  • Harley-Davidson FXDB-S Dyna Glide Sturgis 1991
  • Harley-Davidson FXDC Dyna Super Glide Custom 1992
  • Harley-Davidson FXDL Dyna Low Rider 1993-1998
  • Harley-Davidson FXDS-Conv Dyna Convertible 1994-1998
  • Harley-Davidson FXDWG Dyna Wide Glide 1993-1998
  • Harley-Davidson FXE Super Glide 1984
  • Harley-Davidson FXEF Fat Bob 1985
  • Harley-Davidson FXLR Low Rider Custom 1987-1994
  • Harley-Davidson FXRC Low Rider Chrome 1987
  • Harley-Davidson FXRDG Disc Glide 1984
  • Harley-Davidson FXRS Low Glide 1988-1992
  • Harley-Davidson FXRS-Conv Low Rider Convertible 1990-1993
  • Harley-Davidson FXRS-SP Low Rider Sport 1987-1993
  • Harley-Davidson FXRT Sport Glide 1988-1992
  • Harley-Davidson FXSB Low Rider - Belt 1984-1985
  • Harley-Davidson FXWG Wide Glide 1984-1986
  • Harley-Davidson FLST Softail Heritage 1986-1990
  • Harley-Davidson FLSTC Softail Heritage Classic 1988-1999
  • Harley-Davidson FLSTF Softail Fat Boy 1990-1999
  • Harley-Davidson FLSTS Softail Heritage Springer 1997-1999
  • Harley-Davidson FXST Softail 1984-1999
  • Harley-Davidson FXSTB Softail Night Train 1999
  • Harley-Davidson FXSTC Softail Custom 1986-1999
  • Harley-Davidson FXSTS Softail Springer 1988-1999
  • Harley-Davidson FXSTSB Softail Bad Boy 1995-1997
  • Harley-Davidson FLH Electra Glide 1984-1985
  • Harley-Davidson FLHRC Road King Classic 1998
  • Harley-Davidson FLHS Electra Glide Sport 1984-1993
  • Harley-Davidson FLHT Electra Glide 1986-1998
  • Harley-Davidson FLHX Electra Glide Special 1984-1985
  • Harley-Davidson FLTC Tour Glide Classic 1984-1993
  • Harley-Davidson FLTCU Ultra Classic Tour Glide 1989-1996
  • Harley-Davidson FLTR Road Glide 1998
  • Harley-Davidson FXRD Grand Touring 1986
  • Harley-Davidson FXRC Low Glide 1985
  • Harley-Davidson FXRS Low Rider 1986
  • Harley-Davidson FLSTN Softail Heritage Special 1996
  • Harley-Davidson FLSTN Softail Nostalgia 1995

Other Part Numbers:
KB Pistons #824-01010

Proposition 65

/!\ warningWARNING: Cancer and Reproductive Harm


Vehicle Engine Notes
Harley Davidson FLH Electra Glide

Harley Davidson FLHRC Road King

1984, 1987-1993
Harley Davidson FLHS Electra Glide

1986-1987, 1995-1998
Harley Davidson FLHT Electra Glide Standard

Harley Davidson FLHTCU Electra Glide Ultra

Harley Davidson FLHX Electra Glide

Harley Davidson FLST Softail Heritage

Harley Davidson FLSTC Heritage Softail

Harley Davidson FLSTF Fat Boy

Harley Davidson FLSTN Softail Heritage Special

Harley Davidson FLSTN Softail Nostalgia

Harley Davidson FLSTS Heritage Springer

Harley Davidson FLTC Tour Glide

Harley Davidson FLTCU Tour Glide Ultra

Harley Davidson FLTCUI Tour Glide Ultra

Harley Davidson FLTR Road Glide

Harley Davidson FXD Dyna Super Glide

Harley Davidson FXDB-D Dyna Glide Daytona

Harley Davidson FXDB-S Dyna Glide Sturgis

Harley Davidson FXDC Super Glide Custom

Harley Davidson FXDL Dyna Low Rider

Harley Davidson FXDS-Conv Dyna Convertible

Harley Davidson FXDWG Dyna Wide Glide

Harley Davidson FXE Super Glide

Harley Davidson FXEF Fat Bob

Harley Davidson FXLR Low Rider Custom

Harley Davidson FXR Super Glide II

Harley Davidson FXRC Low Glide

Harley Davidson FXRC Low Rider Chrome

Harley Davidson FXRD Grand Touring

Harley Davidson FXRDG Disc Glide

1984-1985, 1987-1992
Harley Davidson FXRS Low Glide

Harley Davidson FXRS Low Rider

Harley Davidson FXRS-Conv Low Rider Convertible

Harley Davidson FXRS-SP Low Rider

Harley Davidson FXRT Glide

Harley Davidson FXSB Low Rider - Belt

1984-1990, 1999
Harley Davidson FXST Softail Standard

Harley Davidson FXSTB Night Train

Harley Davidson FXSTC Softail Custom

Harley Davidson FXSTS Springer Softail

Harley Davidson FXSTSB Bad Boy

Harley Davidson FXWG Wide Glide

Who Is KB Pistons?

KB Pistons is an aftermarket company that specializes in manufacturing high-performance pistons for various automobiles and motorcycles. They have set the performance cast alloy piston technology benchmark and have consistently provided quality parts for their customers. It has become the go-to brand of many professional race teams, engine builders, and enthusiasts who have that need for speed.

Quality Made Pistons

KB Performance Motorcycle pistons are offered in Cast Hypereutectic 390 alloy and Forged 4032 low expansion alloy. These pistons are preferred for high-performance or high compression applications and offer offset wrist pins for a quiet engine operation. 

Their products come equipped with coated skirts for reduced friction between the piston and cylinder wall. It allows for a tighter piston to wall running clearance, which aids in lowering piston rock and engine noise.

Advanced Manufacturing Facility

KB Pistons has maintained its status as the leading company, thanks to its extensive R&D to develop new piston designs with the latest technology. They use the most advanced equipment such as CNC machines to produce precision cuts and the latest machining process that allow them to create products that are in the league of their own.

Purchase KB Pistons At Vivid Racing

If you are in search of pistons that would provide you with total performance, then KB Pistons is the right brand for you. KB Performance pistons are available for Harley-Davidson and Indian motorcycles in various engine sizes and compression ratios. To know more about KB Pistons, visit Vivid Racing and check out their list of products that would fit your specific needs.

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