KB Performance V-Twin Piston and Ring Kits

Piston and Ring Kit, Hypereutectic, 3.915 in. Bore, Harley-Davidson®, 10.00:1 Compression Ratio, Kit

Part Number: UEM-KB409C-040

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Estimated Ship Date: Apr 21, 2026 if ordered today

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Piston and Ring Kit, Hypereutectic, 3.915 in. Bore, Harley-Davidson®, 9.30:1 Compression Ratio, Kit

Part Number: UEM-KB348-040

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Estimated Ship Date: Apr 21, 2026 if ordered today

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Piston and Ring Kit, Hypereutectic, 3.518 in. Bore, Harley-Davidson®, 7.20;1 Compression Ratio, Kit

Part Number: UEM-KB288-020

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Estimated Ship Date: Apr 21, 2026 if ordered today

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Piston and Ring Kit, Forged, Flat Top, 3.508 in. Bore, Offset Pin, Harley-Davidson®, V-Twin, Kit

Part Number: UEM-KB919C-010

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Estimated Ship Date: Apr 21, 2026 if ordered today

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PISTON KIT HARLEY DAVIDSON

Part Number: UEM-KB935C-STD

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Estimated Ship Date: Apr 21, 2026 if ordered today

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Piston and Ring Kit, Hypereutectic, 3.528 in. Bore, Harley-Davidson®, 10.00:1 Compression Ratio, Kit

Part Number: UEM-KB414-030

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Piston and Ring Kit, Forged, 3.508 in. Bore, Harley-Davidson®, 9.00:1 Compression Ratio, Kit

Part Number: UEM-KB923C-010

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Piston and Ring Kit, Hypereutectic, 3.498 in. Bore, Harley-Davidson®, 10.00:1 Compression Ratio, Kit

Part Number: UEM-KB414-STD

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Piston and Ring Kit, Hypereutectic, 3.238 in. Bore, Harley-Davidson®, 8.20;1 Compression Ratio, Kit

Part Number: UEM-KB292-050

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Piston and Ring Kit, Hypereutectic, 3.538 in. Bore, Harley-Davidson®, 8.90:1 Compression Ratio, Kit

Part Number: UEM-KB295-040

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Piston and Ring Kit, Forged, 3.498 in. Bore, Harley-Davidson®, 9.00:1 Compression Ratio, Kit

Part Number: UEM-KB922C-STD

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Piston and Ring Kit, Hypereutectic, 3.498 in. Bore, Harley-Davidson®, 8.30:1 Compression Ratio, Kit

Part Number: UEM-KB297-STD

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Piston and Ring Kit, Forged, 3.498 in. Bore, Harley-Davidson®, 9.00:1 Compression Ratio, Kit

Part Number: UEM-KB923C-STD

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Piston and Ring Kit, Hypereutectic, 3.538 in. Bore, Harley-Davidson®, 10.50;1 Compression Ratio, Kit

Part Number: UEM-KB266-040

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Estimated Ship Date: Apr 21, 2026 if ordered today

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Piston Set, KB Forged Coated Piston - Knuckle Pan Shovel Hemi Dome -47.6cc 74ci FL, FLH, FX 1941-79

Part Number: UEM-KB931C080

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Estimated Ship Date: Apr 20, 2026 if ordered today

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Powersports Piston, Forged 4032 Alloy, Coated, 3.467 in. Bore, 1.450 in. Comp. Ht, Hemi Dome, -47.6cc, 0.030 in. Oversize, 0.791 in. Pin, Harley®, Set

Part Number: UEM-KB931C030

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Estimated Ship Date: Apr 20, 2026 if ordered today

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Piston and Ring Kit, Hypereutectic, 3.528 in. Bore, Harley-Davidson®, 8.80:1 Compression Ratio, Kit

Part Number: UEM-KB410-030

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Estimated Ship Date: Apr 20, 2026 if ordered today

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Piston and Ring Kit, Hypereutectic, 3.665 in. Bore, Harley-Davidson®, 10.50:1 Compression Ratio, Kit

Part Number: UEM-KB294-040

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Piston and Ring Kit, Forged, 3.498 in. Bore, Harley-Davidson®, 10.00:1 Compression Ratio, Kit

Part Number: UEM-KB924C-STD

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Piston and Ring Kit, Forged, 3.518 in. Bore, Harley-Davidson®, 10.00:1 Compression Ratio, Kit

Part Number: UEM-KB924C-020

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Estimated Ship Date: Apr 21, 2026 if ordered today

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Piston and Ring Kit, Hypereutectic, 3.528 in. Bore, Harley-Davidson®, 9.10;1 Compression Ratio, Kit

Part Number: UEM-KB264-030

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Estimated Ship Date: Apr 21, 2026 if ordered today

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Piston Set, KB Forged Coated Piston - Shovelhead Hemi Dome -42.3cc 88-98ci 1948-84 ROD -7.440

Part Number: UEM-KB928C030

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Piston and Ring Kit, Hypereutectic, 3.538 in. Bore, Harley-Davidson®, 10.00:1 Compression Ratio, Kit

Part Number: UEM-KB414-040

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Estimated Ship Date: Apr 21, 2026 if ordered today

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Piston Set, KB Forged Coated Piston - Shovelhead Hemi Dome -58.2cc 88-98ci 1948-84 ROD -7.440

Part Number: UEM-KB930CSTD

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Piston and Ring Kit, Hypereutectic, 3.518 in. Bore, Harley-Davidson®, 8.80:1 Compression Ratio, Kit

Part Number: UEM-KB410-020

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Estimated Ship Date: Apr 21, 2026 if ordered today

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