KB Performance V-Twin Piston and Ring Kits

PISTON KIT

Part Number: UEM-KB935C-020

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Estimated Ship Date: Apr 20, 2026 if ordered today

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Piston and Ring Kit, Hypereutectic, 3.498 in. Bore, Harley-Davidson®, 9.10;1 Compression Ratio, Kit

Part Number: UEM-KB264-STD

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Estimated Ship Date: Apr 20, 2026 if ordered today

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Piston and Ring Kit, Hypereutectic, 3.895 in. Bore, Harley-Davidson®, 10.00:1 Compression Ratio, Kit

Part Number: UEM-KB409C-020

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Estimated Ship Date: Apr 20, 2026 if ordered today

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KB Pistons, Forged, V-Twin, Pair

Part Number: UEM-KB662C-STD

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Estimated Ship Date: Apr 21, 2026 if ordered today

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Piston and Ring Kit, Hypereutectic, 3.508 in. Bore, Harley-Davidson®, 9.10;1 Compression Ratio, Kit

Part Number: UEM-KB264-010

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Estimated Ship Date: Apr 21, 2026 if ordered today

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Piston and Ring Kit, Hypereutectic, 3.538 in. Bore, Harley-Davidson®, 8.80:1 Compression Ratio, Kit

Part Number: UEM-KB410-040

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Estimated Ship Date: Apr 21, 2026 if ordered today

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

Part Number: UEM-KB925C-040

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Estimated Ship Date: Apr 21, 2026 if ordered today

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Piston and Ring Kit, Hypereutectic, 3.655 in. Bore, Harley-Davidson®, 10.50;1 Compression Ratio, Kit

Part Number: UEM-KB294-030

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Estimated Ship Date: Apr 21, 2026 if ordered today

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Piston and Ring Kit, Forged, 4.030 in. Bore, Harley-Davidson®, 10.00:1 Compression Ratio, Kit

Part Number: UEM-KB914C-030

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Estimated Ship Date: Apr 21, 2026 if ordered today

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Piston and Ring Kit, Forged, 4.030 in. Bore, Harley-Davidson®, 9.50:1 Compression Ratio, Kit

Part Number: UEM-KB913C-030

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Estimated Ship Date: Apr 21, 2026 if ordered today

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Piston and Ring Kit, Forged, 4.145 in. Bore, Harley-Davidson®, 9.50:1 Compression Ratio, Kit

Part Number: UEM-KB916C-020

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Estimated Ship Date: Apr 21, 2026 if ordered today

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Piston and Ring Kit, Forged, 4.130 in. Bore, Harley-Davidson®, 10.50:1 Compression Ratio, Kit

Part Number: UEM-KB918C-005

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Estimated Ship Date: Apr 21, 2026 if ordered today

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Piston and Ring Kit, Forged, 3.905 in. Bore, Harley-Davidson®, 10.00:1 Compression Ratio, Kit

Part Number: UEM-KB908C-030

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Estimated Ship Date: Apr 21, 2026 if ordered today

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Piston and Ring Kit, Forged, 3.895 in. Bore, Harley-Davidson®, 9.50:1 Compression Ratio, Kit

Part Number: UEM-KB907C-020

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Estimated Ship Date: Apr 21, 2026 if ordered today

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Piston and Ring Kit, Hypereutectic, 3.030 in. Bore, Harley-Davidson®, 9.10:1 Compression Ratio, Kit

Part Number: UEM-KB408C-030

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Estimated Ship Date: Apr 21, 2026 if ordered today

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Piston and Ring Kit, Forged, 3.905 in. Bore, Harley-Davidson®, 9.25:1 Compression Ratio, Kit

Part Number: UEM-KB904C-030

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Estimated Ship Date: Apr 21, 2026 if ordered today

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Piston and Ring Kit, Forged, 4.130 in. Bore, Harley-Davidson®, 10.00:1 Compression Ratio, Kit

Part Number: UEM-KB917C-005

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Estimated Ship Date: Apr 21, 2026 if ordered today

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Piston and Ring Kit, Forged, 3.528 in. Bore, Harley-Davidson®, 10.50:1 Compression Ratio, Kit

Part Number: UEM-KB925C-030

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Estimated Ship Date: Apr 21, 2026 if ordered today

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Piston, V-Twin, Forged Aluminum, 3.895 in. Bore, Harley-Davidson®, Kit

Part Number: UEM-KB660C-020

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Estimated Ship Date: Apr 21, 2026 if ordered today

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Piston and Ring Kit, Forged, 4.135 in. Bore, Harley-Davidson®, 9.50:1 Compression Ratio, Kit

Part Number: UEM-KB910C-010

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Estimated Ship Date: Apr 21, 2026 if ordered today

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Piston and Ring Kit, Hypereutectic, 3.905 in. Bore, Harley-Davidson®, 10.00:1 Compression Ratio, Kit

Part Number: UEM-KB409C-030

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Estimated Ship Date: Apr 21, 2026 if ordered today

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Piston and Ring Kit, Forged, 3.503 in. Bore, Harley-Davidson®, 9.00:1 Compression Ratio, Kit

Part Number: UEM-KB922C-005

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Estimated Ship Date: Apr 21, 2026 if ordered today

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Piston and Ring Kit, Forged, 4.005 in. Bore, Harley-Davidson®, 10.50:1 Compression Ratio, Kit

Part Number: UEM-KB915C-005

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Estimated Ship Date: Apr 21, 2026 if ordered today

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Piston and Ring Kit, Forged, 4.155 in. Bore, Harley-Davidson®, 9.50:1 Compression Ratio, Kit

Part Number: UEM-KB910C-030

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Estimated Ship Date: Apr 21, 2026 if ordered today

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Piston and Ring Kit, Forged, 3.528 in. Bore, Harley-Davidson®, 9.00:1 Compression Ratio, Kit

Part Number: UEM-KB922C-030

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Estimated Ship Date: Apr 21, 2026 if ordered today

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