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KB Performance Hyper Piston and Ring Kits

4.58 out of 5 stars 72 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
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 with piston ring sets containing top rings of moly-coated cast iron (M) or ductile iron (D).

Results 1 - 25 of 44

Piston and Ring Kit, Hypereutectic, Flat, 4.350 in. Bore, Chrysler, Kit

Part Number: UEM-KB237KTM030

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Piston and Ring Kit, Hypereutectic, Flat, 4.372 in. Bore, Mopar, Big Block, Kit

Part Number: UEM-KB240KTM-030

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

Part Number: UEM-KB107KTM-060

Not Yet Reviewed

Estimated Ship Date: Dec 29, 2025 if ordered today

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Estimated Ship Date: Dec 29, 2025 if ordered today

Piston and Ring Kit, Hypereutectic, Flat, 4.070 in. Bore, Dodge, Plymouth, Kit

Part Number: UEM-KB243KTM-030

Not Yet Reviewed

Estimated Ship Date: Dec 30, 2025 if ordered today

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Estimated Ship Date: Dec 30, 2025 if ordered today

Piston and Ring Kit, Hypereutectic, Flat, 3.930 in. Bore, Mopar, Small Block, Kit

Part Number: UEM-KB167KTM-020

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Dec 29, 2025 if ordered today

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Estimated Ship Date: Dec 29, 2025 if ordered today

Piston and Ring Kit, Hypereutectic, Step Head, 4.350 in. Bore, Mopar, Big Block, Kit

Part Number: UEM-KB184KTM-030

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Piston and Ring Kit, Hypereutectic, Step Head, 4.350 in. Bore, Mopar, Big Block, Kit

Part Number: UEM-KB236KTM-030

Not Yet Reviewed

Estimated Ship Date: Dec 30, 2025 if ordered today

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Estimated Ship Date: Dec 30, 2025 if ordered today

Piston and Ring Kit, Hypereutectic, Flat, 4.080 in. Bore, Mopar, Small Block, Kit

Part Number: UEM-KB243KTM-040

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Dec 29, 2025 if ordered today

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Estimated Ship Date: Dec 29, 2025 if ordered today

Piston and Ring Kit, Hypereutectic, Flat, 4.100 in. Bore, Mopar, Small Block, Kit

Part Number: UEM-KB243KTM-060

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Piston and Ring Kit, Hypereutectic, Step Head, 4.320 in. Bore, Mopar, Big Block, Kit

Part Number: UEM-KB236KTM-STD

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Estimated Ship Date: Dec 29, 2025 if ordered today

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Estimated Ship Date: Dec 29, 2025 if ordered today

Piston and Ring Kit, Hypereutectic, Dome, 4.280 in. Bore, Mopar, Hemi, Kit

Part Number: UEM-KB210KTM-030

Not Yet Reviewed

Estimated Ship Date: Dec 29, 2025 if ordered today

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Estimated Ship Date: Dec 29, 2025 if ordered today

Piston and Ring Kit, Hypereutectic, Flat, 4.340 in. Bore, Mopar, Big Block, Kit

Part Number: UEM-KB237KTM-020

Not Yet Reviewed

Estimated Ship Date: Dec 29, 2025 if ordered today

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Piston and Ring Kit, Hypereutectic, Flat, 4.280 in. Bore, Mopar, Big Block, Kit

Part Number: UEM-KB162KTM-030

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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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: Dec 29, 2025 if ordered today

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Estimated Ship Date: Dec 29, 2025 if ordered today

Piston and Ring Kit, Hypereutectic, Step Head, 4.340 in. Bore, Mopar, Big Block, Kit

Part Number: UEM-KB184KTM-020

Not Yet Reviewed

Estimated Ship Date: Dec 29, 2025 if ordered today

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Estimated Ship Date: Dec 29, 2025 if ordered today

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

Part Number: UEM-KB167KTM-060

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Dec 29, 2025 if ordered today

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Estimated Ship Date: Dec 29, 2025 if ordered today

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

Part Number: UEM-KB190KTM-060

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Estimated Ship Date: Dec 29, 2025 if ordered today

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Estimated Ship Date: Dec 29, 2025 if ordered today

Piston and Ring Kit, Hypereutectic, Step Head, 4.360 in. Bore, Mopar, Big Block, Kit

Part Number: UEM-KB184KTM-040

Not Yet Reviewed

Estimated Ship Date: Dec 29, 2025 if ordered today

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Estimated Ship Date: Dec 29, 2025 if ordered today

Piston and Ring Kit, Hypereutectic, Step Head, 4.380 in. Bore, Mopar, Big Block, Kit

Part Number: UEM-KB236KTM-060

Not Yet Reviewed

Estimated Ship Date: Dec 29, 2025 if ordered today

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Estimated Ship Date: Dec 29, 2025 if ordered today

Piston and Ring Kit, Hypereutectic, Step Head, 4.360 in. Bore, Chrysler, Kit

Part Number: UEM-KB236KTM-040

Not Yet Reviewed

Estimated Ship Date: Dec 29, 2025 if ordered today

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Estimated Ship Date: Dec 29, 2025 if ordered today

Piston and Ring Kit, Hypereutectic, Dome, 4.310 in. Bore, Mopar, Hemi, Kit

Part Number: UEM-KB210KTM-060

Not Yet Reviewed

Estimated Ship Date: Dec 29, 2025 if ordered today

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Estimated Ship Date: Dec 29, 2025 if ordered today

Piston and Ring Kit, Hypereutectic, Flat, 4.342 in. Bore, Mopar, Big Block, Kit

Part Number: UEM-KB240KTM-STD

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Estimated Ship Date: Dec 29, 2025 if ordered today

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Estimated Ship Date: Dec 29, 2025 if ordered today

Piston and Ring Kit, Hypereutectic, Dome, 4.260 in. Bore, Mopar, Hemi, Kit

Part Number: UEM-KB211KTM-010

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Piston and Ring Kit, Hypereutectic, Step Head, 4.362 in. Bore, Mopar, Big Block, Kit

Part Number: UEM-KB280KTM-020

Not Yet Reviewed

Estimated Ship Date: Dec 29, 2025 if ordered today

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Piston and Ring Kit, Hypereutectic, Step Head, 4.372 in. Bore, Mopar, Big Block, Kit

Part Number: UEM-KB280KTM-030

Not Yet Reviewed

Estimated Ship Date: Dec 29, 2025 if ordered today

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