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KB Performance V-Twin Piston and Ring Kits

4.8 out of 5 stars 20 Customer Reviews

KB Performance V-Twin piston and ring kits bring all of the knowledge and experience of a legendary engine builder to the world of high performance motorcycles. These pistons use the latest manufacturing techniques and standards to ensure quality and maximum available performance. The kits are offered in hypereutectic 390 alloy and forged 4032 low-expansion alloy. KB Performance V-Twin piston and ring kits are available for Harley-Davidson® and Indian motorcycles in a variety of engine sizes and compression ratios.

Showing In Stock Items. Show All 84 Items.

Results 1 - 25 of 62

KB Performance V-Twin Piston and Ring Kits KB714LCA.STD

Powersports Piston, Forged 4032 Alloy, Line2Line Coating, 3.937 in. Bore, 1.086 in. Comp. Ht, Dome, +1.6cc, Standard Size, 0.927 in. Pin, Harley®, Set

Part Number: UEM-KB714LCA-STD

Not Yet Reviewed

Estimated Ship Date: Apr 20, 2026 if ordered today

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Estimated Ship Date: Apr 20, 2026 if ordered today

KB Performance V-Twin Piston and Ring Kits KB918C.STD

Piston and Ring Kit, Forged, 4.125 in. Bore, Harley-Davidson®, 10.50:1 Compression Ratio, Kit

Part Number: UEM-KB918C-STD

Not Yet Reviewed

Estimated Ship Date: Apr 20, 2026 if ordered today

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Estimated Ship Date: Apr 20, 2026 if ordered today

KB Performance V-Twin Piston and Ring Kits KB904C.STD

Piston and Ring Kit, Forged, 3.875 in. Bore, Harley-Davidson®, 9.25:1 Compression Ratio, Kit

Part Number: UEM-KB904C-STD

Not Yet Reviewed

Estimated Ship Date: Apr 20, 2026 if ordered today

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Estimated Ship Date: Apr 20, 2026 if ordered today

KB Performance V-Twin Piston and Ring Kits KB915C.STD

Piston and Ring Kit, Forged, 4.000 in. Bore, Harley-Davidson®, 10.50:1 Compression Ratio, Kit

Part Number: UEM-KB915C-STD

Not Yet Reviewed

Estimated Ship Date: Apr 21, 2026 if ordered today

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Estimated Ship Date: Apr 21, 2026 if ordered today

KB Performance V-Twin Piston and Ring Kits KB661LCA.065

Powersports Piston, Forged 4032, 2-Line Coated, 4.065 in. Bore, 1.086 in. Comp. Ht, Dome, -5.1cc, 0.065 in. Oversize, 0.927 in. Pin, Harley®, Set

Part Number: UEM-KB661LCA-065

Not Yet Reviewed

Estimated Ship Date: Apr 21, 2026 if ordered today

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Estimated Ship Date: Apr 21, 2026 if ordered today

KB Performance V-Twin Piston and Ring Kits KB908C.040

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

Part Number: UEM-KB908C-040

Not Yet Reviewed

Estimated Ship Date: Apr 20, 2026 if ordered today

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Estimated Ship Date: Apr 20, 2026 if ordered today

KB Performance V-Twin Piston and Ring Kits KB661C.010

Piston Set, KB Forged Piston - Twin Cam 96 Big Bore Dome -4.2cc (110ci) 2007 To Present Rod -7.667 w/Screamin' Eagle head

Part Number: UEM-KB661C010

Not Yet Reviewed

Estimated Ship Date: Apr 20, 2026 if ordered today

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Estimated Ship Date: Apr 20, 2026 if ordered today

KB Performance V-Twin Piston and Ring Kits KB661C.020

Powersports Piston, Forged 4032 Alloy, 4.020 in. in. Bore, 1.086 in. Compression Height, Dome, -5.1cc, 0.020 in. Oversize, 0.927 in. Pin, Harley®, Set

Part Number: UEM-KB661C020

Not Yet Reviewed

Estimated Ship Date: Apr 20, 2026 if ordered today

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Estimated Ship Date: Apr 20, 2026 if ordered today

KB Performance V-Twin Piston and Ring Kits KB909C.005

Piston and Ring Kit, Forged, 3.880 in. Bore, Harley-Davidson®, 10.50:1 Compression Ratio, Kit

Part Number: UEM-KB909C-005

Not Yet Reviewed

Estimated Ship Date: Apr 20, 2026 if ordered today

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Estimated Ship Date: Apr 20, 2026 if ordered today

KB Performance V-Twin Piston and Ring Kits KB918C.020

Piston and Ring Kit, Forged, 4.145 in. Bore, Harley-Davidson®, 10.50:1 Compression Ratio, Kit

Part Number: UEM-KB918C-020

Not Yet Reviewed

Estimated Ship Date: Apr 21, 2026 if ordered today

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Estimated Ship Date: Apr 21, 2026 if ordered today

KB Performance V-Twin Piston and Ring Kits KB916C.010

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

Part Number: UEM-KB916C-010

Not Yet Reviewed

Estimated Ship Date: Apr 21, 2026 if ordered today

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Estimated Ship Date: Apr 21, 2026 if ordered today

KB Performance V-Twin Piston and Ring Kits KB905C.STD

Piston and Ring Kit, Forged, Dome, 3.875 in. Bore, Harley-Davidson®, V2, Kit

Part Number: UEM-KB905C-STD

Not Yet Reviewed

Estimated Ship Date: Apr 21, 2026 if ordered today

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Estimated Ship Date: Apr 21, 2026 if ordered today

KB Performance V-Twin Piston and Ring Kits KB908C.020

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

Part Number: UEM-KB908C-020

Not Yet Reviewed

Estimated Ship Date: Apr 21, 2026 if ordered today

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Estimated Ship Date: Apr 21, 2026 if ordered today

KB Performance V-Twin Piston and Ring Kits KB909C.040

Powersports Piston, Forged 4032 Alloy, Coated, 3.915 in. Bore, 1.086 in. Comp. Ht, Dome, -5.4cc, 0.040 in. Oversize, 0.927 in. Pin, Harley®, Set

Part Number: UEM-KB909C-040

Not Yet Reviewed

Estimated Ship Date: Apr 20, 2026 if ordered today

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Estimated Ship Date: Apr 20, 2026 if ordered today

KB Performance V-Twin Piston and Ring Kits KB913C.STD

Piston and Ring Kit, Forged, 4.000 in. Bore, Harley-Davidson®, 9.50:1 Compression Ratio, Kit

Part Number: UEM-KB913C-STD

Not Yet Reviewed

Estimated Ship Date: Apr 21, 2026 if ordered today

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Estimated Ship Date: Apr 21, 2026 if ordered today

KB Performance V-Twin Piston and Ring Kits KB905C.040

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

Part Number: UEM-KB905C-040

Not Yet Reviewed

Estimated Ship Date: Apr 21, 2026 if ordered today

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Estimated Ship Date: Apr 21, 2026 if ordered today

KB Performance V-Twin Piston and Ring Kits KB912C.030

Piston and Ring Kit, Forged, 4.155 in. Bore, Harley-Davidson®, 10.50:1 Compression Ratio, Kit

Part Number: UEM-KB912C-030

Not Yet Reviewed

Estimated Ship Date: Apr 21, 2026 if ordered today

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Estimated Ship Date: Apr 21, 2026 if ordered today

KB Performance V-Twin Piston and Ring Kits KB904C.040

Piston and Ring Kit, Forged, 3.915 in. Bore, Harley-Davidson®, 9.25:1 Compression Ratio, Kit

Part Number: UEM-KB904C-040

Not Yet Reviewed

Estimated Ship Date: Apr 21, 2026 if ordered today

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Estimated Ship Date: Apr 21, 2026 if ordered today

KB Performance V-Twin Piston and Ring Kits KB905C.020

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

Part Number: UEM-KB905C-020

Not Yet Reviewed

Estimated Ship Date: Apr 21, 2026 if ordered today

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Estimated Ship Date: Apr 21, 2026 if ordered today

KB Performance V-Twin Piston and Ring Kits KB662C.030

KB Pistons, Forged, V-Twin, Pair

Part Number: UEM-KB662C-030

Not Yet Reviewed

Estimated Ship Date: Apr 21, 2026 if ordered today

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Estimated Ship Date: Apr 21, 2026 if ordered today

KB Performance V-Twin Piston and Ring Kits KB914C.STD

Piston and Ring Kit, Forged, 4.000 in. Bore, Harley-Davidson®, 10.00:1 Compression Ratio, Kit

Part Number: UEM-KB914C-STD

Not Yet Reviewed

Estimated Ship Date: Apr 21, 2026 if ordered today

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Estimated Ship Date: Apr 21, 2026 if ordered today

KB Performance V-Twin Piston and Ring Kits KB906C.010

Piston and Ring Kit, Forged, Dome, 3.885 in. Bore, Harley-Davidson®, V2, Kit

Part Number: UEM-KB906C-010

Not Yet Reviewed

Estimated Ship Date: Apr 21, 2026 if ordered today

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Estimated Ship Date: Apr 21, 2026 if ordered today

KB Performance V-Twin Piston and Ring Kits KB909C.020

Piston and Ring Kit, Forged, 3.895 in. Bore, Harley-Davidson®, 10.50:1 Compression Ratio, Kit

Part Number: UEM-KB909C-020

Not Yet Reviewed

Estimated Ship Date: Apr 21, 2026 if ordered today

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Estimated Ship Date: Apr 21, 2026 if ordered today

KB Performance V-Twin Piston and Ring Kits KB914C.020

Piston and Ring Kit, Forged, 4.020 in. Bore, Harley-Davidson®, 10.00:1 Compression Ratio, Kit

Part Number: UEM-KB914C-020

Not Yet Reviewed

Estimated Ship Date: Apr 20, 2026 if ordered today

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Estimated Ship Date: Apr 20, 2026 if ordered today

KB Performance V-Twin Piston and Ring Kits KB906C.020

Piston and Ring Kit, Forged, 3.900 in. Bore, Harley-Davidson®, 10.50:1 Compression Ratio, Kit

Part Number: UEM-KB906C-020

Not Yet Reviewed

Estimated Ship Date: Apr 20, 2026 if ordered today

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Estimated Ship Date: Apr 20, 2026 if ordered today

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