Availability
Piston, Hypereutectic, Dome, 4.000 in. Bore, 5/64 in., 5/64 in., 3/16 in. Ring Grooves, Mopar, Each
Part Number: UEM-SKB190-STD
Not Yet Reviewed
Estimated Ship Date: Jan 12, 2026 if ordered today
Estimated Ship Date: Jan 12, 2026 if ordered today
Piston, Hypereutectic, Dome, 4.060 in. Bore, 5/64 in., 5/64 in., 3/16 in. Ring Grooves, Mopar, Each
Part Number: UEM-SKB191L-060
Not Yet Reviewed
Estimated Ship Date: Jan 12, 2026 if ordered today
Estimated Ship Date: Jan 12, 2026 if ordered today
Piston, Hypereutectic, Dome, 4.000 in. Bore, 5/64 in., 5/64 in., 3/16 in. Ring Grooves, Mopar, Each
Part Number: UEM-SKB191L-STD
Not Yet Reviewed
Estimated Ship Date: Jan 12, 2026 if ordered today
Estimated Ship Date: Jan 12, 2026 if ordered today
Piston, Hypereutectic, Dome, 4.060 in. Bore, 5/64 in., 5/64 in., 3/16 in. Ring Grooves, Mopar, Each
Part Number: UEM-SKB191R-060
Not Yet Reviewed
Estimated Ship Date: Jan 12, 2026 if ordered today
Estimated Ship Date: Jan 12, 2026 if ordered today
Piston, Hypereutectic, Dome, 4.000 in. Bore, 5/64 in., 5/64 in., 3/16 in. Ring Grooves, Mopar, Each
Part Number: UEM-SKB191R-STD
Not Yet Reviewed
Estimated Ship Date: Jan 12, 2026 if ordered today
Estimated Ship Date: Jan 12, 2026 if ordered today
Piston, Hypereutectic, Dome, 4.280 in. Bore, 5/64 in., 5/64 in., 3/16 in. Ring Grooves, Mopar, Each
Part Number: UEM-SKB210-030
Not Yet Reviewed
Estimated Ship Date: Jan 12, 2026 if ordered today
Estimated Ship Date: Jan 12, 2026 if ordered today
Piston, Hypereutectic, Dome, 4.290 in. Bore, 5/64 in., 5/64 in., 3/16 in. Ring Grooves, Mopar, Each
Part Number: UEM-SKB210-040
Not Yet Reviewed
Estimated Ship Date: Jan 12, 2026 if ordered today
Estimated Ship Date: Jan 12, 2026 if ordered today
Piston, Hypereutectic, Dome, 4.250 in. Bore, 5/64 in., 5/64 in., 3/16 in. Ring Grooves, Mopar, Each
Part Number: UEM-SKB210-STD
Not Yet Reviewed
Estimated Ship Date: Jan 12, 2026 if ordered today
Estimated Ship Date: Jan 12, 2026 if ordered today
Piston, Hypereutectic, Dome, 4.260 in. Bore, 5/64 in., 5/64 in., 3/16 in. Ring Grooves, Mopar, Each
Part Number: UEM-SKB211-010
Not Yet Reviewed
Estimated Ship Date: Jan 12, 2026 if ordered today
Estimated Ship Date: Jan 12, 2026 if ordered today
Piston, Hypereutectic, Dome, 4.250 in. Bore, 5/64 in., 5/64 in., 3/16 in. Ring Grooves, Mopar, Each
Part Number: UEM-SKB211-STD
Not Yet Reviewed
Estimated Ship Date: Jan 12, 2026 if ordered today
Estimated Ship Date: Jan 12, 2026 if ordered today
Piston, Hypereutectic, Flat, 4.310 in. Bore, 5/64 in., 5/64 in., 3/16 in. Ring Grooves, Mopar, Each
Part Number: UEM-SKB162-060
Not Yet Reviewed
Estimated Ship Date: Jan 12, 2026 if ordered today
Estimated Ship Date: Jan 12, 2026 if ordered today
Piston, Hypereutectic, Flat, 3.950 in. Bore, 5/64 in., 5/64 in., 3/16 in. Ring Grooves, Mopar, Each
Part Number: UEM-SKB167-040
Not Yet Reviewed
Estimated Ship Date: Jan 12, 2026 if ordered today
Estimated Ship Date: Jan 12, 2026 if ordered today
Piston and Ring Kit, Hypereutectic, Step Head, 4.030 in. Bore, Mopar, Small Block, Kit
Part Number: UEM-KB356KTM-030
Not Yet Reviewed
Estimated Ship Date: Jan 12, 2026 if ordered today
Estimated Ship Date: Jan 12, 2026 if ordered today
Pistons, Hypereutectic, Flat, 89mm Bore, 1.5mm, 1.5mm, 4.0mm Ring Grooves, Mopar, Set of 4
Part Number: UEM-KB239-1-5MM
Not Yet Reviewed
Estimated Ship Date: Jan 12, 2026 if ordered today
Estimated Ship Date: Jan 12, 2026 if ordered today
Pistons, Hypereutectic, Flat, 88mm Bore, 1.2mm, 1.2mm, 3.0mm Ring Grooves, Mopar, Set of 4
Part Number: UEM-KB241-5MM
Not Yet Reviewed
Estimated Ship Date: Jan 12, 2026 if ordered today
Estimated Ship Date: Jan 12, 2026 if ordered today
Pistons, Hypereutectic, Flat, 88.25mm Bore, 1.2mm, 1.2mm, 3.0mm Ring Grooves, Mopar, Set of 4
Part Number: UEM-KB241-75MM
Not Yet Reviewed
Estimated Ship Date: Jan 12, 2026 if ordered today
Estimated Ship Date: Jan 12, 2026 if ordered today
Piston, Cast, Flat, 3.477 in. Bore, 3/32 in., 3/32 in., 5/32 in., 5/32 in. Ring Grooves, Mopar, L6, Each
Part Number: UEM-S1281-040
Not Yet Reviewed
Estimated Ship Date: Jan 12, 2026 if ordered today
Estimated Ship Date: Jan 12, 2026 if ordered today
Piston, Cast, Flat, 3.437 in. Bore, 3/32 in., 3/32 in., 5/32 in., 5/32 in. Ring Grooves, Mopar, L6, Each
Part Number: UEM-S1281-STD
Not Yet Reviewed
Estimated Ship Date: Jan 12, 2026 if ordered today
Estimated Ship Date: Jan 12, 2026 if ordered today
Piston, Cast, Flat, 4.060 in. Bore, 5/64 in., 5/64 in., 3/16 in. Ring Grooves, Mopar, Small Block, Each
Part Number: UEM-S1273-060
Not Yet Reviewed
Estimated Ship Date: Jan 12, 2026 if ordered today
Estimated Ship Date: Jan 12, 2026 if ordered today
Piston, Cast, Flat, 4.000 in. Bore, 5/64 in., 5/64 in., 3/16 in. Ring Grooves, Mopar, Small Block, Each
Part Number: UEM-S1273-STD
Not Yet Reviewed
Estimated Ship Date: Jan 12, 2026 if ordered today
Estimated Ship Date: Jan 12, 2026 if ordered today
Piston, Cast, Flat, 3.270 in. Bore, 3/32 in., 3/32 in., 5/32 in., 5/32 in. Ring Grooves, Mopar, L6, Each
Part Number: UEM-S1280-020
Not Yet Reviewed
Estimated Ship Date: Jan 12, 2026 if ordered today
Estimated Ship Date: Jan 12, 2026 if ordered today
KB Hyper Piston - Chry 408 Rod 6.123 Step Dish 23.5cc 2V No Quench Dome
Part Number: UEM-KB416-020
Not Yet Reviewed
Estimated Ship Date: Jan 12, 2026 if ordered today
Estimated Ship Date: Jan 12, 2026 if ordered today
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
Not Yet Reviewed
Estimated Ship Date: Jan 12, 2026 if ordered today
Estimated Ship Date: Jan 12, 2026 if ordered today
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
Not Yet Reviewed
Estimated Ship Date: Jan 12, 2026 if ordered today
Estimated Ship Date: Jan 12, 2026 if ordered today
Pistons, Hypereutectic, Flat, 88.5mm Bore, 1.5mm, 1.5mm, 4.0mm Ring Grooves, Mopar, Set of 4
Part Number: UEM-KB239-1-0MM
Not Yet Reviewed
Estimated Ship Date: Jan 12, 2026 if ordered today
Estimated Ship Date: Jan 12, 2026 if ordered today
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