KB Performance Hyper Piston and Ring Kits

4.61 out of 5 stars 77 Customer Reviews

KB Performance Hyper piston and ring kits are offered for a wide range of applications from street and towing to marine and race. The kits feature pistons cast from

KB Performance Hyper piston and ring kits are offered for a wide range of applications from street and towing to marine and race. The kits feature pistons cast from 390 hypereutectic alloy heat-treated to T-6 standards to make them stronger. The pistons also feature fully machined crowns and valve pockets. KB hypereutectic pistons come in several head designs, as well as standard and oversized bore sizes. All KB Hyper pistons are lightweight to improve throttle response and rpm changes, while still being strong enough to withstand high compression and high temperatures. KB Performance Hyper kits (KT) are completed wi

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Results 1 - 25 of 32

KB Performance Hyper Piston and Ring Kits KB107KTM.030

Piston and Ring Kit, Hypereutectic, Flat, 4.030 in. Bore, Mopar, Small Block, Kit

Part Number: UEM-KB107KTM-030

5.0 out of 5 stars ( 4 )

Estimated Ship Date: Monday 3/2/2026 if shipped by air

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Estimated Ship Date: Monday 3/2/2026 if shipped by air

KB Performance Hyper Piston and Ring Kits KB399KTM.030

Piston and Ring Kit, Hypereutectic, Dome, 3.940 in. Bore, Mopar, Small Block, Kit

Part Number: UEM-KB399KTM-030

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 3/2/2026 if shipped by air

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Estimated Ship Date: Monday 3/2/2026 if shipped by air

KB Performance Hyper Piston and Ring Kits KB167KTM.030

Piston and Ring Kit, Hypereutectic, Flat, 3.940 in. Bore, Mopar, Small Block, Kit

Part Number: UEM-KB167KTM-030

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 3/2/2026 if shipped by air

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Estimated Ship Date: Monday 3/2/2026 if shipped by air

KB Performance Hyper Piston and Ring Kits KB107KTM.020

Piston and Ring Kit, Hypereutectic, Flat, 4.020 in. Bore, Mopar, Small Block, Kit

Part Number: UEM-KB107KTM-020

Not Yet Reviewed

Estimated Ship Date: Monday 3/2/2026 if shipped by air

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Estimated Ship Date: Monday 3/2/2026 if shipped by air

KB Performance Hyper Piston and Ring Kits KB167KTM.STD

Piston and Ring Kit, Hypereutectic, Flat, 3.910 in. Bore, Mopar, Small Block, Kit

Part Number: UEM-KB167KTM-STD

3.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 3/2/2026 if shipped by air

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Estimated Ship Date: Monday 3/2/2026 if shipped by air

KB Performance Hyper Piston and Ring Kits KB107KTM.STD

Piston and Ring Kit, Hypereutectic, Flat, 4.000 in. Bore, Mopar, Small Block, Kit

Part Number: UEM-KB107KTM-STD

4.67 out of 5 stars ( 3 )

Estimated Ship Date: Monday 3/2/2026 if shipped by air

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Estimated Ship Date: Monday 3/2/2026 if shipped by air

KB Performance Hyper Piston and Ring Kits KB167KTM.040

Piston and Ring Kit, Hypereutectic, Flat, 3.950 in. Bore, Chrysler, Kit

Part Number: UEM-KB167KTM-040

5.0 out of 5 stars ( 5 )

Estimated Ship Date: Monday 3/2/2026 if shipped by air

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Estimated Ship Date: Monday 3/2/2026 if shipped by air

KB Performance Hyper Piston and Ring Kits KB399KTM.STD

Piston and Ring Kit, Hypereutectic, Dome, 3.910 in. Bore, Mopar, Small Block, Kit

Part Number: UEM-KB399KTM-STD

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Apr 7, 2026 if ordered today

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Estimated Ship Date: Apr 7, 2026 if ordered today

KB Performance Hyper Piston and Ring Kits KB190KTM.STD

Piston and Ring Kit, Hypereutectic, Dome, 4.000 in. Bore, Mopar, Small Block, Kit

Part Number: UEM-KB190KTM-STD

Not Yet Reviewed

Estimated Ship Date: Apr 7, 2026 if ordered today

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Estimated Ship Date: Apr 7, 2026 if ordered today

KB Performance Hyper Piston and Ring Kits KB399KTM.060

Piston and Ring Kit, Hypereutectic, Dome, 3.970 in. Bore, Mopar, Small Block, Kit

Part Number: UEM-KB399KTM-060

Not Yet Reviewed

Estimated Ship Date: Apr 8, 2026 if ordered today

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Estimated Ship Date: Apr 8, 2026 if ordered today

KB Performance Hyper Piston and Ring Kits KB232KTM.060

Piston and Ring Kit, Hypereutectic, Step Dish, 4.060 in. Bore, Mopar, Small Block, Kit

Part Number: UEM-KB232KTM-060

Not Yet Reviewed

Estimated Ship Date: Apr 7, 2026 if ordered today

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Estimated Ship Date: Apr 7, 2026 if ordered today

KB Performance Hyper Piston and Ring Kits KB232KTM.STD

Piston and Ring Kit, Hypereutectic, Step Dish, 4.000 in. Bore, Mopar, Small Block, Kit

Part Number: UEM-KB232KTM-STD

Not Yet Reviewed

Estimated Ship Date: Monday 3/2/2026 if shipped by air

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Estimated Ship Date: Monday 3/2/2026 if shipped by air

KB Performance Hyper Piston and Ring Kits KB356KTM.040

Piston and Ring Kit, Hypereutectic, Step Head, 4.040 in. Bore, Mopar, Small Block, Kit

Part Number: UEM-KB356KTM-040

Not Yet Reviewed

Estimated Ship Date: Apr 7, 2026 if ordered today

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Estimated Ship Date: Apr 7, 2026 if ordered today

KB Performance Hyper Piston and Ring Kits KB373KTM.040

Piston and Ring Kit, Hypereutectic, Dome, 4.040 in. Bore, Mopar, Small Block, Kit

Part Number: UEM-KB373KTM-040

Not Yet Reviewed

Estimated Ship Date: Apr 7, 2026 if ordered today

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Estimated Ship Date: Apr 7, 2026 if ordered today

KB Performance Hyper Piston and Ring Kits KB362KTM.020

Piston and Ring Kit, Hypereutectic, Step Dish, 4.020 in. Bore, Mopar, Small Block, Kit

Part Number: UEM-KB362KTM-020

Not Yet Reviewed

Estimated Ship Date: Apr 7, 2026 if ordered today

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Estimated Ship Date: Apr 7, 2026 if ordered today

KB Performance Hyper Piston and Ring Kits KB362KTM.040

Piston and Ring Kit, Hypereutectic, Step Dish, 4.040 in. Bore, Mopar, Small Block, Kit

Part Number: UEM-KB362KTM-040

Not Yet Reviewed

Estimated Ship Date: Apr 7, 2026 if ordered today

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Estimated Ship Date: Apr 7, 2026 if ordered today

KB Performance Hyper Piston and Ring Kits KB239KTD.STD

Piston and Ring Kit, Hypereutectic, Flat, 87.50mm Bore, Chrysler, Kit

Part Number: UEM-KB239KTD-STD

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 3/2/2026 if shipped by air

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Estimated Ship Date: Monday 3/2/2026 if shipped by air

KB Performance Hyper Piston and Ring Kits KB268KTD.STD

Piston and Ring Kit, Hypereutectic, Dish, 87.50mm Bore, Mopar, 4 Cylinder, Kit

Part Number: UEM-KB268KTD-STD

Not Yet Reviewed

Estimated Ship Date: Apr 7, 2026 if ordered today

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Estimated Ship Date: Apr 7, 2026 if ordered today

KB Performance Hyper Piston and Ring Kits KB190KTM.060

Piston and Ring Kit, Hypereutectic, Dome, 4.060 in. Bore, Chrysler, Kit

Part Number: UEM-KB190KTM-060

Not Yet Reviewed

Estimated Ship Date: Monday 3/2/2026 if shipped by air

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Estimated Ship Date: Monday 3/2/2026 if shipped by air

KB Performance Hyper Piston and Ring Kits KB356KTM.020

Piston and Ring Kit, Hypereutectic, Step Head, 4.020 in. Bore, Mopar, Small Block, Kit

Part Number: UEM-KB356KTM-020

Not Yet Reviewed

Estimated Ship Date: Apr 7, 2026 if ordered today

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Estimated Ship Date: Apr 7, 2026 if ordered today

KB Performance Hyper Piston and Ring Kits KB356KTM.060

Piston and Ring Kit, Hypereutectic, Step Head, 4.060 in. Bore, Mopar, Small Block, Kit

Part Number: UEM-KB356KTM-060

Not Yet Reviewed

Estimated Ship Date: Apr 7, 2026 if ordered today

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Estimated Ship Date: Apr 7, 2026 if ordered today

KB Performance Hyper Piston and Ring Kits KB191KTM.020

Piston and Ring Kit, Hypereutectic, Dome, 4.020 in. Bore, Mopar, Small Block, Kit

Part Number: UEM-KB191KTM-020

Not Yet Reviewed

Estimated Ship Date: Apr 7, 2026 if ordered today

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Estimated Ship Date: Apr 7, 2026 if ordered today

KB Performance Hyper Piston and Ring Kits KB191KTM.040

Piston and Ring Kit, Hypereutectic, Dome, 4.040 in. Bore, Mopar, Small Block, Kit

Part Number: UEM-KB191KTM-040

Not Yet Reviewed

Estimated Ship Date: Apr 7, 2026 if ordered today

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Estimated Ship Date: Apr 7, 2026 if ordered today

KB Performance Hyper Piston and Ring Kits KB191KTM.STD

Piston and Ring Kit, Hypereutectic, Dome, 4.000 in. Bore, Mopar, Small Block, Kit

Part Number: UEM-KB191KTM-STD

Not Yet Reviewed

Estimated Ship Date: Apr 7, 2026 if ordered today

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Estimated Ship Date: Apr 7, 2026 if ordered today

KB Performance Hyper Piston and Ring Kits KB362KTM.060

Piston and Ring Kit, Hypereutectic, Step Dish, 4.060 in. Bore, Mopar, Small Block, Kit

Part Number: UEM-KB362KTM-060

Not Yet Reviewed

Estimated Ship Date: Apr 7, 2026 if ordered today

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Estimated Ship Date: Apr 7, 2026 if ordered today

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