KB Pistons & Piston Rings

Pistons, Hypereutectic, Step, 4.400 in. Bore, 1/16 in., 1/16 in., 3/16 in. Ring Grooves, Ford, Set of 8

Part Number: UEM-KB402-040

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Estimated Ship Date: Mar 6, 2026 if ordered today

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1 Set KB368.030/1 Set 4360AM8.030

Part Number: UEM-KB368KTM-030

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Estimated Ship Date: Mar 6, 2026 if ordered today

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Pistons, Hypereutectic, Flat, 4.103 in. Bore, 5/64 in., 5/64 in., 3/16 in. Ring Grooves, Pontiac, Set of 8

Part Number: UEM-KB370-040

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Pistons, Hypereutectic, Step, 4.190 in. Bore, 5/64 in., 1/16 in., 3/16 in. Ring, Pontiac V8, Set of 8

Part Number: UEM-KB371-040

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Piston and Ring Kit, Hypereutectic, Step Dish, 4.180 in. Bore, Pontiac, V8, Kit

Part Number: UEM-KB371KTM-030

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Pistons, Hypereutectic, Quench Head, 4.020 in. Bore, 5/64 in., 5/64 in., 3/16 in., Mopar, Set of 8

Part Number: UEM-KB373-020

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Pistons, Hypereutectic, Quench Head 4.060 in. Bore, 5/64 in., 5/64 in., 3/16 in. Ring Grooves, Mopar, Set of 8

Part Number: UEM-KB373-060

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Pistons, Hypereutectic, Quench Head 4.000 in. Bore, 5/64 in., 5/64 in., 3/16 in. Ring Grooves, Mopar, Set of 8

Part Number: UEM-KB373-STD

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

Part Number: UEM-KB373KTM-020

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

Part Number: UEM-KB373KTM-STD

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1 Set KB376.020/ 1 Set 4125BM8.020

Part Number: UEM-KB376KTM-020

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1 Set KB376.040/ 1 Set 4125BM8.040

Part Number: UEM-KB376KTM-040

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1 Set KB376.060/ 1 Set 4125BM8.060

Part Number: UEM-KB376KTM-060

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Pistons, Hypereutectic, Dish, 4.170 in. Bore, 5/64 in., 5/64 in., 3/16 in. Ring Grooves, Ford, Set of 8

Part Number: UEM-KB378-040

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Piston and Ring Kit, Hypereutectic, Step Dish, 4.150 in. Bore, Ford, Big Block FE, Kit

Part Number: UEM-KB378KTM-020

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Pistons, Hypereutectic, Step, 4.020 in. Bore, 5/64 in., 5/64 in., 3/16 in. Ring Grooves, Ford, Set of 8

Part Number: UEM-KB379-020

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Pistons, Hypereutectic, Step, 4.030 in. Bore, 5/64 in., 5/64 in., 3/16 in. Ring Grooves, Ford, Set of 8

Part Number: UEM-KB379-030

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Pistons, Hypereutectic, Step, 4.040 in. Bore, 5/64 in., 5/64 in., 3/16 in. Ring Grooves, Ford, Set of 8

Part Number: UEM-KB379-040

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Estimated Ship Date: Mar 6, 2026 if ordered today

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Pistons, Hypereutectic, Step, 4.000 in. Bore, 5/64 in., 5/64 in., 3/16 in. Ring Grooves, Ford, Set of 8

Part Number: UEM-KB379-STD

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

Part Number: UEM-KB379KTM-020

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Piston and Ring Kit, Hypereutectic, Step Dish, 4.030 in. Bore, Ford, Small Block, Kit

Part Number: UEM-KB379KTM-030

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

Part Number: UEM-KB379KTM-040

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KB Hyper Piston - Chry 408 Rod 6.123 Step Dish 23.5cc 2V No Quench Dome

Part Number: UEM-KB416-020

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Pistons, Hypereutectic, Step, 4.040 in. Bore, 5/64 in., 5/64 in., 3/16 in. Ring Grooves, Mopar, Set of 8

Part Number: UEM-KB416-040

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Pistons, KB Performance, 4.000 in. Bore, Step, 1.465 in. Compression Height, Press/Float Pin, 5/64 x 5/64 x 3/16 Ring Grooves, Mopar, Set of 8

Part Number: UEM-KB416-STD

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