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Founder, 1929-2014
Speedy Bill
Since 1952
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Shop KB Pistons At Speedway Motors

Keith Black Hypereutectic Pistons set the benchmark in performance cast alloy piston technology. KB Pistons carry a vast assortment of compression ratios available in dish, flat top and dome styles for most Chevy or Ford V8s. For Claimer racers who are on a budget, KB Claimer Series pistons will meet the tough requirements that this racing class places on the piston.


Featured Products
  • KB Claimer Chevy 350 Hypereutectic Pistons, Flat Top, 6.0 Rod
    KB Claimer Chevy 350 Hypereutectic Pistons, Flat Top, 6.0 Rod
    (Part #4749908)
    x
                

    These Keith Black economy (also known as economy pistons) feature coated skirts, wrist pin lockrings and T-5 hypereutectic construction. Can be used with either press fit or floating wrist pins (lockrings included).

    set of 8 for Chevy 350 c.i. (4.000" bore x 3.48" stroke). Does not include piston ring set. Use 5/64", 5/64", 3/16" piston rings (Ring Style A).

    • Comp Height 5.7" Rod -  1.565
    • Comp Height 6.0" Rod -  1.265
    • Pin Diameter -  0.9272

    KB Claimer Piston Chart (GIF)

    Ring Style Chart (GIF)

  • KB Claimer Chevy 350 Hypereutectic Pistons, Flat Top, 5.7 Rod
    KB Claimer Chevy 350 Hypereutectic Pistons, Flat Top, 5.7 Rod
    (Part #4749902)
    x
                

    These Keith Black economy (also known as economy pistons) feature coated skirts, wrist pin lockrings and T-5 hypereutectic construction. Can be used with either press fit or floating wrist pins (lockrings included).

    Set of 8 for Chevy 350 c.i. (4.000" bore x 3.48" stroke). Does not include piston ring set. Use 5/64", 5/64", 3/16" piston rings (Ring Style A).

    KB Claimer Piston Chart (GIF)

    Ring Style Chart (GIF)

  • KB 2.3 Ford Hypereutectic Pistons, Flat Top, 5.700 Rod
    KB 2.3 Ford Hypereutectic Pistons, Flat Top, 5.700 Rod
    (Part #474218)
    x
                

    Keith Black hypereutectic pistons are T-6 heat treated and offer reduced scuffing and improved durability. They also allow you to run tighter clearances which makes more power. 

    Available in .030" and .040" oversizes (stock 3.78" bore x 3.126" stroke). Use ring Style C. Pins included.

    Ring Style Chart (GIF)

  • KB 2.3 Ford Hypereutectic Pistons, Flat Top, 5.205 Rod
    KB 2.3 Ford Hypereutectic Pistons, Flat Top, 5.205 Rod
    (Part #474217)
    x
                

    Keith Black hypereutectic pistons are T-6 heat treated and offer reduced scuffing and improved durability. They also allow you to run tighter clearances which makes more power. 

    Available in .030" and .040" oversizes (stock 3.78" bore x 3.126" stroke). Use ring Style C. Pins included.

    Ring Style Chart (GIF)

  • KB Claimer Chevy 350 Hypereutectic Pistons, .150 Dome, 5.7 Rod
    KB Claimer Chevy 350 Hypereutectic Pistons, .150 Dome, 5.7 Rod
    (Part #4749904)
    x
                

    These Keith Black economy (also known as economy pistons) feature coated skirts, wrist pin lockrings and T-5 hypereutectic construction. Can be used with either press fit or floating wrist pins (lockrings included).

    Set of 8 for Chevy 350 c.i. (4.000" bore x 3.48" stroke). Does not include piston ring set. Use 5/64", 5/64", 3/16" piston rings (Ring Style A).

    KB Claimer Piston Chart (GIF)

    Ring Style Chart (GIF)

  • KB Claimer Chevy 383 Hypereutectic Pistons, Flat Top, 6.0 Rod
    KB Claimer Chevy 383 Hypereutectic Pistons, Flat Top, 6.0 Rod
    (Part #4749909)
    x
                

    These Keith Black Claimer Pistons (also known as economy pistons) feature coated skirts, wrist pin lockrings and T-5 hypereutectic construction. Can be used with either press fit or floating wrist pins (lockrings included).

    Set of 8 for Chevy 383 c.i. (4.000" bore x 3.75" stroke). Does not include piston ring set. Use Ring Style C.

    KB Claimer Piston Chart (GIF)

    Ring Style Chart (GIF)

  • KB Chevy 350 Hypereutectic Pistons, Flat Top, 5.7 Rod
    KB Chevy 350 Hypereutectic Pistons, Flat Top, 5.7 Rod
    (Part #474120)
    x
                

    Keith Black Hyperutectic pistons are favored for their improved power and reduced scuffing. The unique design & manufacturing processes combine to produce a rigid piston, which will rock less in the bore improving ring seal. These T-5 heat treated pistons also offer reduced thermal expansion, which allows you to run tighter clearances and allows the piston rings to seal better and minimize blow-by.

    For S/B Chevy 350 c.i. (4.000" bore x 3.48" stroke).

    • 390 Hypereutectic alloy
    • Fully machined crowns and valve reliefs
    • Drilled oil drain backs
    • Full floating wrist pins
    • Triple wound spiral locks
    • Reflective alloy allows 2% power increase
    • Quench dome technology minimizes deterioration
    • Zero deck quench designs
    • Lightweight wrist pins

    Ring Style Chart (GIF)

    474-120 Instructions (PDF)

  • KB Claimer Chevy 350 Hypereutectic Pistons, Flat Top 4V, 5.7 Rod
    KB Claimer Chevy 350 Hypereutectic Pistons, Flat Top 4V, 5.7 Rod
    (Part #4749901)
    x
                

    These Keith Black economy (also known as economy pistons) feature coated skirts, wrist pin lockrings and T-5 hypereutectic construction. Can be used with either press fit or floating wrist pins (lockrings included).

    Set of 8 for Chevy 350 c.i. (4.000" bore x 3.48" stroke). Does not include piston ring set. Use 5/64", 5/64", 3/16" piston rings (Ring Style A).

    KB Claimer Piston Chart (GIF)

    Ring Style Chart (GIF)

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  • KB Chevy 377/400 Hyperutectic Pistons, Flat Top, 5.7/5.565 Rod
    KB Chevy 377/400 Hyperutectic Pistons, Flat Top, 5.7/5.565 Rod
    (Part #474172)
    x
                

    Keith Black Hyperutectic pistons are favored for their improved power and reduced scuffing. The unique design & manufacturing processes combine to produce a rigid piston, which will rock less in the bore improving ring seal. These T-5 heat treated pistons also offer reduced thermal expansion, which allows you to run tighter clearances and allows the piston rings to seal better and minimize blow-by.

    For Chevy 377 c.i. (4.125" bore x 3.48" stroke x 5.7" rod) and Chevy 400 c.i. (4.125" bore x 3.75" stroke x 5.565").

    • 390 Hypereutectic alloy
    • Fully machined crowns and valve reliefs
    • Drilled oil drain backs
    • Full floating wrist pins
    • Triple wound spiral locks
    • Reflective alloy allows 2% power increase
    • Quench dome technology minimizes deterioration
    • Zero deck quench designs
    • Lightweight wrist pins

    Ring Style Chart (GIF)

    474-172 Instructions (PDF)

  • KB Cadillac 500 Hypereutectic Flat Top Pistons
    KB Cadillac 500 Hypereutectic Flat Top Pistons
    (Part #474353)
    x
                

    Stuff your Cadillac 500 with these high-strength Keith Black Series hypereutectic pistons for great performance and reliability.

    • Flat top
    • 13.1 C/R with 76cc head
    • 9.0 C/R with 120cc head
    • 6.75" Rod Length
  • KB Chevy 350 Hypereutectic Pistons, Dish, 5.7 Rod
    KB Chevy 350 Hypereutectic Pistons, Dish, 5.7 Rod
    (Part #474193)
    x
                

    Keith Black Hyperutectic pistons are favored for their improved power and reduced scuffing. The unique design & manufacturing processes combine to produce a rigid piston, which will rock less in the bore improving ring seal. These T-5 heat treated pistons also offer reduced thermal expansion, which allows you to run tighter clearances and allows the piston rings to seal better and minimize blow-by.

    For S/B Chevy 350 c.i. (4.000" bore x 3.48" stroke).

    • 390 Hypereutectic alloy
    • Fully machined crowns and valve reliefs
    • Drilled oil drain backs
    • Full floating wrist pins
    • Triple wound spiral locks
    • Reflective alloy allows 2% power increase
    • Quench dome technology minimizes deterioration
    • Zero deck quench designs
    • Lightweight wrist pins

    Ring Style Chart (GIF)

    474-193 Instructions (PDF)

  • KB Chevy 350 Hypereutectic Pistons, .150 Dome, 6.0 Rod
    KB Chevy 350 Hypereutectic Pistons, .150 Dome, 6.0 Rod
    (Part #474113)
    x
                

    Keith Black Hyperutectic pistons are favored for their improved power and reduced scuffing. The unique design & manufacturing processes combine to produce a rigid piston, which will rock less in the bore improving ring seal. These T-5 heat treated pistons also offer reduced thermal expansion, which allows you to run tighter clearances and allows the piston rings to seal better and minimize blow-by.

    • 390 Hypereutectic alloy
    • Fully machined crowns and valve reliefs
    • Drilled oil drain backs
    • Full floating wrist pins
    • Triple wound spiral locks
    • Reflective alloy allows 2% power increase
    • Quench dome technology minimizes deterioration
    • Zero deck quench designs
    • Lightweight wrist pins

    For S/B Chevy 350 c.i. (4.000" bore x 3.48" stroke).

    Ring Style Chart (GIF)

    474-113 Instructions (PDF)

  • KB Claimer Chevy 383 Hypereutectic Pistons, Flat Top, 6.0 Rod
    KB Claimer Chevy 383 Hypereutectic Pistons, Flat Top, 6.0 Rod
    (Part #4749909)
    x
                

    These Keith Black Claimer Pistons (also known as economy pistons) feature coated skirts, wrist pin lockrings and T-5 hypereutectic construction. Can be used with either press fit or floating wrist pins (lockrings included).

    Set of 8 for Chevy 383 c.i. (4.000" bore x 3.75" stroke). Does not include piston ring set. Use Ring Style C.

    KB Claimer Piston Chart (GIF)

    Ring Style Chart (GIF)

  • KB Claimer Chevy 350 Hypereutectic Pistons, .150 Dome, 5.7 Rod
    KB Claimer Chevy 350 Hypereutectic Pistons, .150 Dome, 5.7 Rod
    (Part #4749904)
    x
                

    These Keith Black economy (also known as economy pistons) feature coated skirts, wrist pin lockrings and T-5 hypereutectic construction. Can be used with either press fit or floating wrist pins (lockrings included).

    Set of 8 for Chevy 350 c.i. (4.000" bore x 3.48" stroke). Does not include piston ring set. Use 5/64", 5/64", 3/16" piston rings (Ring Style A).

    KB Claimer Piston Chart (GIF)

    Ring Style Chart (GIF)

  • KB Chevy 400 Hyperutectic Pistons, Flat Top, 6.0 Rod
    KB Chevy 400 Hyperutectic Pistons, Flat Top, 6.0 Rod
    (Part #474128)
    x
                

    Keith Black Hyperutectic pistons are favored for their improved power and reduced scuffing. The unique design & manufacturing processes combine to produce a rigid piston, which will rock less in the bore improving ring seal. These T-5 heat treated pistons also offer reduced thermal expansion, which allows you to run tighter clearances and allows the piston rings to seal better and minimize blow-by.

    • 390 Hypereutectic alloy
    • Fully machined crowns and valve reliefs
    • Drilled oil drain backs
    • Full floating wrist pins
    • Triple wound spiral locks
    • Reflective alloy allows 2% power increase
    • Quench dome technology minimizes deterioration
    • Zero deck quench designs
    • Lightweight wrist pins

    For Chevy 400 c.i. (4.125" bore x 3.75" stroke).

    Ring Style Chart (GIF)

    474-128 Instructions (PDF)

  • KB Chevy 377/400 Hypereutectic Pistons, .150 Dome, 5.7/5.565 Rod
    KB Chevy 377/400 Hypereutectic Pistons, .150 Dome, 5.7/5.565 Rod
    (Part #474182)
    x
                

    Keith Black Hyperutectic pistons are favored for their improved power and reduced scuffing. The unique design & manufacturing processes combine to produce a rigid piston, which will rock less in the bore improving ring seal. These T-5 heat treated pistons also offer reduced thermal expansion, which allows you to run tighter clearances and allows the piston rings to seal better and minimize blow-by.

    • 390 Hypereutectic alloy
    • Fully machined crowns and valve reliefs
    • Drilled oil drain backs
    • Full floating wrist pins
    • Triple wound spiral locks
    • Reflective alloy allows 2% power increase
    • Quench dome technology minimizes deterioration
    • Zero deck quench designs
    • Lightweight wrist pins

    For Chevy 377 c.i. (4.125" bore x 3.48" stroke x 5.7" rod) and Chevy 400 c.i. (4.125" bore x 3.75" stroke x 5.565").  . 

    Ring Style Chart (GIF)

    474-182 Instructions (PDF)

  • KB Chevy 400 Hyperutectic Pistons, .150 Dome, 6.0 Rod
    KB Chevy 400 Hyperutectic Pistons, .150 Dome, 6.0 Rod
    (Part #474129)
    x
                

    Keith Black Hyperutectic pistons are favored for their improved power and reduced scuffing. The unique design & manufacturing processes combine to produce a rigid piston, which will rock less in the bore improving ring seal. These T-5 heat treated pistons also offer reduced thermal expansion, which allows you to run tighter clearances and allows the piston rings to seal better and minimize blow-by.

    • 390 Hypereutectic alloy
    • Fully machined crowns and valve reliefs
    • Drilled oil drain backs
    • Full floating wrist pins
    • Triple wound spiral locks
    • Reflective alloy allows 2% power increase
    • Quench dome technology minimizes deterioration
    • Zero deck quench designs
    • Lightweight wrist pins

    For Chevy 400 c.i. (4.125" bore x 3.75" stroke).

    Ring Style Chart (GIF)

    474-129 Instructions (PDF)

  • KB Chevy 400 Hyperutectic Pistons, .100 Dome, 5.7 Rod
    KB Chevy 400 Hyperutectic Pistons, .100 Dome, 5.7 Rod
    (Part #474127)
    x
                

    Keith Black Hyperutectic pistons are favored for their improved power and reduced scuffing. The unique design & manufacturing processes combine to produce a rigid piston, which will rock less in the bore improving ring seal. These T-5 heat treated pistons also offer reduced thermal expansion, which allows you to run tighter clearances and allows the piston rings to seal better and minimize blow-by.

    • 390 Hypereutectic alloy
    • Fully machined crowns and valve reliefs
    • Drilled oil drain backs
    • Full floating wrist pins
    • Triple wound spiral locks
    • Reflective alloy allows 2% power increase
    • Quench dome technology minimizes deterioration
    • Zero deck quench designs
    • Lightweight wrist pins

    For Chevy 400 c.i. (4.125" bore x 3.75" stroke).

    Ring Style Chart (GIF)

    474-127 Instructions (PDF)

  • KB Chevy 383 Hypereutectic Pistons, .100 Dome, 5.7 Rod
    KB Chevy 383 Hypereutectic Pistons, .100 Dome, 5.7 Rod
    (Part #474111)
    x
                

    Keith Black Hypereutectic pistons are favored for their improved power and reduced scuffing. The unique design & manufacturing processes combine to produce a rigid piston, which will rock less in the bore improving ring seal. These T-5 heat treated pistons also offer reduced thermal expansion, which allows you to run tighter clearances and allows the piston rings to seal better and minimize blow-by.

    • 390 Hypereutectic alloy
    • Fully machined crowns and valve reliefs
    • Drilled oil drain backs
    • Full floating wrist pins
    • Triple wound spiral locks
    • Reflective alloy allows 2% power increase
    • Quench dome technology minimizes deterioration
    • Zero deck quench designs
    • Lightweight wrist pins

    For S/B Chevy 383 c.i. (4.000" bore x 3.75" stroke).

    Ring Style Chart (GIF)

    474-111 Instructions (PDF)

  • KB Chevy 383 Hypereutectic Pistons, Flat Top, 5.7 Rod
    KB Chevy 383 Hypereutectic Pistons, Flat Top, 5.7 Rod
    (Part #474134)
    x
                

    Keith Black Hypereutectic pistons are favored for their improved power and reduced scuffing. The unique design & manufacturing processes combine to produce a rigid piston, which will rock less in the bore improving ring seal. These T-5 heat treated pistons also offer reduced thermal expansion, which allows you to run tighter clearances and allows the piston rings to seal better and minimize blow-by.

    For S/B Chevy 383 c.i. (4.000" bore x 3.75" stroke).

    • 390 Hypereutectic alloy
    • Fully machined crowns and valve reliefs
    • Drilled oil drain backs
    • Full floating wrist pins
    • Triple wound spiral locks
    • Reflective alloy allows 2% power increase
    • Quench dome technology minimizes deterioration
    • Zero deck quench designs
    • Lightweight wrist pins

    Ring Style Chart (GIF)

    474-134 Instructions (PDF)

  • KB Chevy 377 Hypereutectic Pistons, Dish, 6.0 Inch Rod
    KB Chevy 377 Hypereutectic Pistons, Dish, 6.0 Inch Rod
    (Part #474350)
    x
                

    Keith Black Hyperutectic pistons are favored for their improved power and reduced scuffing. The unique design & manufacturing processes combine to produce a rigid piston, which will rock less in the bore improving ring seal. These T-5 heat treated pistons also offer reduced thermal expansion, which allows you to run tighter clearances and allows the piston rings to seal better and minimize blow-by.

    For S/B Chevy 377 c.i. (4.125" bore x 3.48" stroke). 

    • 390 Hypereutectic alloy
    • Fully machined crowns and valve reliefs
    • Drilled oil drain backs
    • Full floating wrist pins
    • Triple wound spiral locks
    • Reflective alloy allows 2% power increase
    • Quench dome technology minimizes deterioration
    • Zero deck quench designs
    • Lightweight wrist pins

    Ring Style Chart (GIF)

    474-350 Instructions (PDF)

  • KB Claimer Chevy 383 Hypereutectic Pistons, Flat Top, 5.7 Rod
    KB Claimer Chevy 383 Hypereutectic Pistons, Flat Top, 5.7 Rod
    (Part #4749906)
    x
                

    These Keith Black Claimer Pistons (also known as economy pistons) feature coated skirts, wrist pin lockrings and T-5 hypereutectic construction. Can be used with either press fit or floating wrist pins (lockrings included).

    Set of 8 for Chevy 383 c.i. (4.000" bore x 3.75" stroke). Does not include piston ring set. Use Ring Style A.

    KB Claimer Piston Chart (GIF)

    Ring Style Chart (GIF)

  • KB Chevy 377 Hypereutectic Pistons, .150 Dome, 6.0 Rod
    KB Chevy 377 Hypereutectic Pistons, .150 Dome, 6.0 Rod
    (Part #474195)
    x
                

    Keith Black Hyperutectic pistons are favored for their improved power and reduced scuffing. The unique design & manufacturing processes combine to produce a rigid piston, which will rock less in the bore improving ring seal. These T-5 heat treated pistons also offer reduced thermal expansion, which allows you to run tighter clearances and allows the piston rings to seal better and minimize blow-by.

    • 390 Hypereutectic alloy
    • Fully machined crowns and valve reliefs
    • Drilled oil drain backs
    • Full floating wrist pins
    • Triple wound spiral locks
    • Reflective alloy allows 2% power increase
    • Quench dome technology minimizes deterioration
    • Zero deck quench designs
    • Lightweight wrist pins

    For S/B Chevy 377 c.i. (4.125" bore x 3.48" stroke). 

    Ring Style Chart (GIF)

    474-350 Instructions (PDF)

  • KB 2.3 Ford Hypereutectic Pistons, Flat Top, 5.205 Rod
    KB 2.3 Ford Hypereutectic Pistons, Flat Top, 5.205 Rod
    (Part #474217)
    x
                

    Keith Black hypereutectic pistons are T-6 heat treated and offer reduced scuffing and improved durability. They also allow you to run tighter clearances which makes more power. 

    Available in .030" and .040" oversizes (stock 3.78" bore x 3.126" stroke). Use ring Style C. Pins included.

    Ring Style Chart (GIF)

  • KB Chevy 400 Hyperutectic Pistons, Flat Top, 5.7 Rod
    KB Chevy 400 Hyperutectic Pistons, Flat Top, 5.7 Rod
    (Part #474125)
    x
                

    Keith Black Hyperutectic pistons are favored for their improved power and reduced scuffing. The unique design & manufacturing processes combine to produce a rigid piston, which will rock less in the bore improving ring seal. These T-5 heat treated pistons also offer reduced thermal expansion, which allows you to run tighter clearances and allows the piston rings to seal better and minimize blow-by.

    • 390 Hypereutectic alloy
    • Fully machined crowns and valve reliefs
    • Drilled oil drain backs
    • Full floating wrist pins
    • Triple wound spiral locks
    • Reflective alloy allows 2% power increase
    • Quench dome technology minimizes deterioration
    • Zero deck quench designs
    • Lightweight wrist pins

    For Chevy 400 c.i. (4.125" bore x 3.75" stroke).

    Ring Style Chart (GIF)

    474-125 Instructions (PDF)

  • KB Claimer Chevy 400 Hypereutectic Pistons, Flat Top, 5.7 Rod
    KB Claimer Chevy 400 Hypereutectic Pistons, Flat Top, 5.7 Rod
    (Part #4749911)
    x
                

    These Keith Black Claimer pistons (also known as economy pistons) feature coated skirts, wrist pin lockrings and T-5 hypereutectic construction. Can be used with either press fit or floating wrist pins (lockrings included).

    Set of 8 for Chevy 400 c.i. (4.125" bore x 3.75" stroke). Does not include piston ring set. Use 5/64", 5/64", 3/16" piston rings (Ring Style A).

    KB Claimer Piston Chart (GIF)

    Ring Style Chart (GIF)

  • KB Chevy 350 Hypereutectic Pistons, .388 Dome, 5.7 Rod
    KB Chevy 350 Hypereutectic Pistons, .388 Dome, 5.7 Rod
    (Part #474213)
    x
                

    Keith Black Hyperutectic pistons are favored for their improved power and reduced scuffing. The unique design & manufacturing processes combine to produce a rigid piston, which will rock less in the bore improving ring seal. These T-5 heat treated pistons also offer reduced thermal expansion, which allows you to run tighter clearances and allows the piston rings to seal better and minimize blow-by.

    • 390 Hypereutectic alloy
    • Fully machined crowns and valve reliefs
    • Drilled oil drain backs
    • Full floating wrist pins
    • Triple wound spiral locks
    • Reflective alloy allows 2% power increase
    • Quench dome technology minimizes deterioration
    • Zero deck quench designs
    • Lightweight wrist pins

    For S/B Chevy 350 c.i. (4.000" bore x 3.48" stroke).

    Ring Style Chart (GIF)

    474-213 Instructions (PDF)

  • KB 2.3 Ford Hypereutectic Pistons, Flat Top, 5.700 Rod
    KB 2.3 Ford Hypereutectic Pistons, Flat Top, 5.700 Rod
    (Part #474218)
    x
                

    Keith Black hypereutectic pistons are T-6 heat treated and offer reduced scuffing and improved durability. They also allow you to run tighter clearances which makes more power. 

    Available in .030" and .040" oversizes (stock 3.78" bore x 3.126" stroke). Use ring Style C. Pins included.

    Ring Style Chart (GIF)

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