Selected Filters


Loading...

Availability


KB Performance Pistons

4.45 out of 5 stars 144 Customer Reviews

KB Performance hypereutectic pistons are made from 390 aluminum alloy and heat-treated to T6 standards, which makes them 30 percent stronger than ordinary untreated
KB Performance hypereutectic pistons are made from 390 aluminum alloy and heat-treated to T6 standards, which makes them 30 percent stronger than ordinary untreated hypereutectics. Their 100 percent CNC-machined crowns, high upper compression-ring location, gas-accumulator groove, drilled oil returns, and spiral-lock retainer grooves make these pistons outstanding for performance applications. They have a lightweight, rigid-rib skirt design that stabilizes the piston in the bore. All of this adds up to pistons that fit tighter than forged types, provide improved oil control, reduce blow-by, increase ring life, elimin
KB Performance hypereutectic pistons are made from 390 aluminum alloy and heat-treated to T6 standards, which makes them 30 percent stronger than ordinary untreated hypereutectics. Their 100 percent CNC-machined crowns, high upper compression-ring location, gas-accumulator groove, drilled oil returns, and spiral-lock retainer grooves make these pistons outstanding for performance applications. They have a lightweight, rigid-rib skirt design that stabilizes the piston in the bore. All of this adds up to pistons that fit tighter than forged types, provide improved oil control, reduce blow-by, increase ring life, eliminate cold start-up knocking, and won't cost you an arm and a leg! Thousands of models are available—find the set and options designed for your vehicle and engine application.

Showing All Customizable Items, Including Not in Stock Items

Results 1 - 25 of 578

Piston, Hypereutectic, Step, 4.030 in. Bore, 5/64 in., 5/64 in., 3/16 in. Ring Grooves, Mopar, Each

Part Number: UEM-SKB356-030

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Dec 1, 2026 if ordered today

...Loading

Estimated Ship Date: Dec 1, 2026 if ordered today

Piston, Hypereutectic, Step Dish, 4.040 in. Bore, 1/16 in., 1/16 in., 3/16 in. Ring Grooves, Ford, Each

Part Number: UEM-SKB366-040

Not Yet Reviewed

Estimated Ship Date: Dec 1, 2026 if ordered today

...Loading

Estimated Ship Date: Dec 1, 2026 if ordered today

Piston, Hypereutectic, Flat, 4.000 in. Bore, 5/64 in., 5/64 in., 3/16 in. Ring Grooves, Ford, Each

Part Number: UEM-SKB311-STD

Not Yet Reviewed

Estimated Ship Date: Nov 13, 2026 if ordered today

...Loading

Estimated Ship Date: Nov 13, 2026 if ordered today

Piston, Hypereutectic, Dome, 4.350 in. Bore, 5/64 in., 5/64 in., 3/16 in. Ring Grooves, Chevy, Each

Part Number: UEM-SKB203-100

Not Yet Reviewed

Estimated Ship Date: Nov 13, 2026 if ordered today

...Loading

Estimated Ship Date: Nov 13, 2026 if ordered today

Piston, Hypereutectic, Dome, 3.940 in. Bore, 5/64 in., 5/64 in., 3/16 in. Ring Grooves, Mopar, Each

Part Number: UEM-SKB399-030

Not Yet Reviewed

Estimated Ship Date: Dec 1, 2026 if ordered today

...Loading

Estimated Ship Date: Dec 1, 2026 if ordered today

Piston, Hypereutectic, Flat, 4.290 in. Bore, 1/16 in., 1/16 in., 3/16 in. Ring Grooves, Chevy, Each

Part Number: UEM-SKB224-040

Not Yet Reviewed

Estimated Ship Date: Dec 1, 2026 if ordered today

...Loading

Estimated Ship Date: Dec 1, 2026 if ordered today

Piston, Hypereutectic, Flat, 4.000 in. Bore, 5/64 in., 5/64 in., 3/16 in. Ring Grooves, Ford, Each

Part Number: UEM-SKB315-STD

Not Yet Reviewed

Estimated Ship Date: Dec 1, 2026 if ordered today

...Loading

Estimated Ship Date: Dec 1, 2026 if ordered today

Piston, Hypereutectic, Dome, 4.390 in. Bore, 1/16 in., 1/16 in., 3/16 in. Ring Grooves, Ford, Each

Part Number: UEM-SKB401-030

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Dec 1, 2026 if ordered today

...Loading

Estimated Ship Date: Dec 1, 2026 if ordered today

Piston, Hypereutectic, Dish, 4.020 in. Bore, 5/64 in., 5/64 in., 3/16 in. Ring Grooves, Chevy, Each

Part Number: UEM-SKB193-020

Not Yet Reviewed

Estimated Ship Date: Dec 1, 2026 if ordered today

...Loading

Estimated Ship Date: Dec 1, 2026 if ordered today

Piston, Hypereutectic, Dome, 4.320 in. Bore, 1/16 in., 1/16 in., 3/16 in. Ring Grooves, Chevy, Each

Part Number: UEM-SKB398-070

Not Yet Reviewed

Estimated Ship Date: Dec 1, 2026 if ordered today

...Loading

Estimated Ship Date: Dec 1, 2026 if ordered today

Piston, Hypereutectic, Dish, 4.060 in. Bore, 1/16 in., 1/16 in., 3/16 in. Ring Grooves, Ford, Each

Part Number: UEM-SKB355-060

Not Yet Reviewed

Estimated Ship Date: Dec 1, 2026 if ordered today

...Loading

Estimated Ship Date: Dec 1, 2026 if ordered today

Piston, Hypereutectic, Dish, 4.000 in. Bore, 1/16 in., 1/16 in., 3/16 in. Ring Grooves, Chevy, Each

Part Number: UEM-SKB121-STD

Not Yet Reviewed

Estimated Ship Date: Dec 1, 2026 if ordered today

...Loading

Estimated Ship Date: Dec 1, 2026 if ordered today

Piston, Hypereutectic, Flat, 4.390 in. Bore, 5/64 in., 5/64 in., 3/16 in. Ring Grooves, Ford, Each

Part Number: UEM-SKB137-030

2.0 out of 5 stars ( 1 )

Estimated Ship Date: Dec 1, 2026 if ordered today

...Loading

Estimated Ship Date: Dec 1, 2026 if ordered today

Piston, Hypereutectic, Flat, 4.020 in. Bore, 5/64 in., 5/64 in., 3/16 in. Ring Grooves, Ford, Each

Part Number: UEM-SKB115-020

Not Yet Reviewed

Estimated Ship Date: Dec 1, 2026 if ordered today

...Loading

Estimated Ship Date: Dec 1, 2026 if ordered today

Piston, Hypereutectic, Flat, 4.040 in. Bore, 5/64 in., 5/64 in., 3/16 in. Ring Grooves, Ford, Each

Part Number: UEM-SKB151-040

Not Yet Reviewed

Estimated Ship Date: Dec 1, 2026 if ordered today

...Loading

Estimated Ship Date: Dec 1, 2026 if ordered today

Piston, Hypereutectic, Flat, 4.000 in. Bore, 1/16 in., 1/16 in., 3/16 in. Ring Grooves, Chevy, Each

Part Number: UEM-SKB122-STD

Not Yet Reviewed

Estimated Ship Date: Dec 1, 2026 if ordered today

...Loading

Estimated Ship Date: Dec 1, 2026 if ordered today

Piston, Hypereutectic, Dish, 4.020 in. Bore, 1/16 in., 1/16 in., 3/16 in. Ring Grooves, Chevy, Each

Part Number: UEM-SKB121-020

Not Yet Reviewed

Estimated Ship Date: Dec 1, 2026 if ordered today

...Loading

Estimated Ship Date: Dec 1, 2026 if ordered today

Piston, Hypereutectic, Flat, 4.040 in. Bore, 1/16 in., 1/16 in., 3/16 in. Ring Grooves, Chevy, Each

Part Number: UEM-SKB100-040

Not Yet Reviewed

Estimated Ship Date: Dec 1, 2026 if ordered today

...Loading

Estimated Ship Date: Dec 1, 2026 if ordered today

Piston, Hypereutectic, Dish, 4.040 in. Bore, 1/16 in., 1/16 in., 3/16 in. Ring Grooves, Chevy, Each

Part Number: UEM-SKB101-040

Not Yet Reviewed

Estimated Ship Date: Dec 1, 2026 if ordered today

...Loading

Estimated Ship Date: Dec 1, 2026 if ordered today

Piston, Hypereutectic, Flat, 4.000 in. Bore, 1/16 in., 1/16 in., 3/16 in. Ring Grooves, Chevy, Each

Part Number: UEM-SKB106-STD

Not Yet Reviewed

Estimated Ship Date: Dec 1, 2026 if ordered today

...Loading

Estimated Ship Date: Dec 1, 2026 if ordered today

Piston, Hypereutectic, Dish, 4.030 in. Bore, 5/64 in., 5/64 in., 3/16 in. Ring Grooves, Chevy, Each

Part Number: UEM-SKB197-030

Not Yet Reviewed

Estimated Ship Date: Dec 1, 2026 if ordered today

...Loading

Estimated Ship Date: Dec 1, 2026 if ordered today

Piston, Hypereutectic, Dome, 4.250 in. Bore, 1/16 in., 1/16 in., 3/16 in. Ring Grooves, Chevy, Each

Part Number: UEM-SKB397-STD

Not Yet Reviewed

Estimated Ship Date: Dec 1, 2026 if ordered today

...Loading

Estimated Ship Date: Dec 1, 2026 if ordered today

Piston, Hypereutectic, Flat, 4.030 in. Bore, 1/16 in., 1/16 in., 3/16 in. Ring Grooves, GM, V6, V8, Each

Part Number: UEM-SKB198-030

Not Yet Reviewed

Estimated Ship Date: Dec 1, 2026 if ordered today

...Loading

Estimated Ship Date: Dec 1, 2026 if ordered today

Piston, Hypereutectic, Flat, 4.060 in. Bore, 1/16 in., 1/16 in., 3/16 in. Ring Grooves, Ford, Each

Part Number: UEM-SKB246-060

Not Yet Reviewed

Estimated Ship Date: Dec 1, 2026 if ordered today

...Loading

Estimated Ship Date: Dec 1, 2026 if ordered today

Piston, Hypereutectic, Flat, 3.820 in. Bore, 1/16 in., 1/16 in., 3/16 in. Ring Grooves, Ford, Each

Part Number: UEM-SKB218-040

Not Yet Reviewed

Estimated Ship Date: Dec 1, 2026 if ordered today

...Loading

Estimated Ship Date: Dec 1, 2026 if ordered today