KB Pistons

49 products

Created from a high-silicon aluminum alloy, KB Performance pistons are lightweight to improve throttle response and RPM changes while still retaining incredible strength. Browse the range below!

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KB PISTONS

$655.99

Features & Benefits:- * Bore = 3.497″ * Stroke = 3.969″ * Hypereutectic Alloy is a cast 16% silicon content material. * Perfect for air cooled engines. * Low thermal expansion rate = tighter p...

KB PISTONS

$655.99

Features & Benefits:- * Bore = 3.507″ * Stroke = 3.969″ * Hypereutectic Alloy is a cast 16% silicon content material. * Perfect for air cooled engines. * Low thermal expansion rate = tighter p...

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KB PISTONS

$866.99

Features & Benefits:- * Bore = 4.000″ * Stroke = 4.375″ * Forged 4032 Alloy is an 11% silicon alloy that is formed in a forging press then fully machined * Best resistance to cracking in hi-co...

KB PISTONS

$672.99

Features & Benefits:- * Bore = 3.498″ * Stroke = 4.250″ * Hypereutectic Alloy is a cast 16% silicon content material. * Perfect for air cooled engines. * Low thermal expansion rate = tighter p...

KB PISTONS

$867.99

Features & Benefits:- * Bore = 3.875″ * Stroke = 4.000″ * Forged 4032 Alloy is an 11% silicon alloy that is formed in a forging press then fully machined. * Best resistance to cracking in hi-c...

KB PISTONS

$829.99

Features & Benefits:- * Bore=3.875″ * Stroke=4.000″ * Hypereutectic Alloy is a cast 16% silicon content material * Perfect for air cooled engines * Low thermal expansion rate = tighter piston...

KB PISTONS

$865.99

Features & Benefits:- * Bore = 3.875″ * Stroke = 4.375″ * Forged 4032 Alloy is an 11% silicon alloy that is formed in a forging press then fully machined * Best resistance to cracking in hi-c...

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KB PISTONS

$672.99

Features & Benefits:- * Bore = 3.498″ * Stroke = 4.250″ * Hypereutectic Alloy is a cast 16% silicon content material. * Perfect for air cooled engines. * Low thermal expansion rate = tighter ...

KB PISTONS

$809.99

Features & Benefits:- * Bore = 3.498″ * Stroke = 4.250″ * Forged 4032 Alloy is an 11% silicon alloy that is formed in a forging press then fully machined * Best resistance to cracking in hi-co...

KB PISTONS

$671.99

Features & Benefits:- * Bore = 3.498″ * Stroke = 4.250″ * Hypereutectic Alloy is a cast 16% silicon content material. * Perfect for air cooled engines. * Low thermal expansion rate = tighter p...

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KB PISTONS

$865.99

Features & Benefits:- * Bore = 3.875″ * Stroke = 4.375″ * Flat Top with slight hollow Dome. * Forged 4032 Alloy is an 11% silicon alloy that is formed in a forging press then fully machined. *...

KB PISTONS

$1,130.99

Features & Benefits:- * Super Duty KB Forged Coated Anodized Piston Kit. * Big bore 120″ piston kit for Milwaukee 8. * Factory 114″ and 117″ cylinders are used to bore to 4.125″. * No head m...

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KB PISTONS

$638.99

Features & Benefits:- * Bore = 3.498″ * Stroke = 4.250″ * Hypereutectic Alloy is a cast 16% silicon content material. * Perfect for air cooled engines. * Low thermal expansion rate = tighter p...

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KB PISTONS

$622.99

* Bore=3.498″ – Stroke=3.812 * Hypereutectic Alloy is a cast 16% silicon content material * Perfect for air cooled engines * Low thermal expansion rate = tighter piston-to-cylinder clearance Tech ...

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KB PISTONS

$670.99

Features & Benefits:- * Bore = 3.498″ * Stroke = 3.812″ * Hypereutectic Alloy is a cast 16% silicon content material. * Perfect for air cooled engines. * Low thermal expansion rate = tighter p...