Pistons & Piston Rings

Piston and Ring Kit, Forged, 3.880 in. Bore, Harley-Davidson®, 10.00:1 Compression Ratio, Kit

Part Number: UEM-KB905C-005

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Estimated Ship Date: Jan 16, 2026 if ordered today

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"KB HYPER PISTON - TWIN CAM 88 BIG BORE (95ci) 1998-06, ROD-7.667, BORE 3.875, STROKE 4.000, C.H. 1.270, FLAT

Part Number: UEM-KB348-STD

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Estimated Ship Date: Jan 15, 2026 if ordered today

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Piston and Ring Kit, Forged Aluminum, 77.000mm Bore, Yamaha, Kit

Part Number: WIS-4986M07700

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Piston and Ring Kit, Forged, 3.895 in. Bore, Harley-Davidson®, 9.25:1 Compression Ratio, Kit

Part Number: UEM-KB904C-020

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Estimated Ship Date: Jan 12, 2026 if ordered today

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

Part Number: UEM-KB904C-STD

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Estimated Ship Date: Dec 29, 2025 if ordered today

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

Part Number: UEM-KB909C-005

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Estimated Ship Date: Dec 29, 2025 if ordered today

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

Part Number: UEM-KB908C-020

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Estimated Ship Date: Jan 16, 2026 if ordered today

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

Part Number: UEM-KB918C-020

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Estimated Ship Date: Jan 16, 2026 if ordered today

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

Part Number: UEM-KB915C-STD

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Estimated Ship Date: Jan 16, 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-KB916C-010

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Estimated Ship Date: Jan 16, 2026 if ordered today

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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

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Estimated Ship Date: Jan 16, 2026 if ordered today

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Piston and Ring Kit, Hypereutectic, 3.442 in. Bore, Harley-Davidson®, 7.80;1 Compression Ratio, Kit

Part Number: UEM-KB263-005

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Estimated Ship Date: Jan 16, 2026 if ordered today

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ProX Piston Kit Beta 480RR '15-22 11.9:1 (99.97mm)

Part Number: PXR-01-7425-B

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Estimated Ship Date: Dec 31, 2025 if ordered today

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"KB HYPER PISTON - TWIN CAM 88 BIG BORE (95ci) 1998-06, ROD-7.667, FLAT TOP +1cc"

Part Number: UEM-KB411-STD

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Estimated Ship Date: Dec 29, 2025 if ordered today

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Piston and Ring Kit, Forged, 3.518 in. Bore, Harley-Davidson®, 10.50:1 Compression Ratio, Kit

Part Number: UEM-KB925C-020

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Estimated Ship Date: Jan 16, 2026 if ordered today

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Piston and Ring Kit, Hypereutectic, 3.630 in. Bore, Harley-Davidson®, 10.50;1 Compression Ratio, Kit

Part Number: UEM-KB294-005

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Estimated Ship Date: Dec 29, 2025 if ordered today

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Piston and Ring Kit, Hypereutectic, 3.645 in. Bore, Harley-Davidson®, 10.50;1 Compression Ratio, Kit

Part Number: UEM-KB294-020

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Estimated Ship Date: Jan 16, 2026 if ordered today

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Piston Rings, Moly, 3.528 in. Bore, Harley-Davidson®, Set

Part Number: WIS-3527X

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Estimated Ship Date: Jan 5, 2026 if ordered today

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Piston Rings, Chrome, 87.00mm Bore, for use on Honda®, Kawasaki, Yamaha, Set

Part Number: WIS-3425XC

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Estimated Ship Date: Jan 5, 2026 if ordered today

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Piston Rings, Moly, 3.507 in. Bore, Buell, Harley-Davidson®, Set

Part Number: WIS-3507X

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Estimated Ship Date: Jan 5, 2026 if ordered today

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Piston Rings, Chrome, 100.00mm Bore, for use on Honda®, Set

Part Number: WIS-3937XH

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Estimated Ship Date: Jan 5, 2026 if ordered today

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ProX Piston Kit Beta RR300 '13-17 (71.95mm)

Part Number: PXR-01-7393-B

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Estimated Ship Date: Dec 31, 2025 if ordered today

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Piston and Ring Kit, Forged Aluminum, 81.000mm Bore, Suzuki, Kit

Part Number: WIS-4690M08100

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Estimated Ship Date: Jan 5, 2026 if ordered today

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ProX Piston Kit KX450 '19-22 12.5:1 (95.99mm)

Part Number: PXR-01-4429-C

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Estimated Ship Date: Dec 31, 2025 if ordered today

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Piston Pin Lock Rings, Round Wire, 0.748 in. Pin, Pair

Part Number: WIS-CW19

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Estimated Ship Date: Jan 5, 2026 if ordered today

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