Engines & Engine Parts

Engine Piston, HD Milwaukee 8 124cid 11.0:1 CR (X)

Part Number: WIS-40182PS

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Estimated Ship Date: Apr 17, 2026 if ordered today

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Powersports Pistons, 2017-2022 Harley Milwaukee Eight 128 ci, 4.250" bore, 4.500" stroke, 11.5:1 CR 1.080" CH -1.9 dome cc

Part Number: CPD-M5111

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Estimated Ship Date: Apr 6, 2026 if ordered today

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Engine Valve Spring Kit, Harley Milwaukee 8 Beehive Spring Kit w/ Tool Steel Retainers; .530" Max Lift

Part Number: CCA-9715-KIT

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Estimated Ship Date: May 14, 2026 if ordered today

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Piston Set, Super Duty KB Forged Coated Anodized Piston - Big Bore 120" Milwaukee 8 114" and 117" bored to 4.125"

Part Number: UEM-KB542LCA010

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Estimated Ship Date: Apr 29, 2026 if ordered today

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Powersports Pistons, 2017-2022 Harley Milwaukee Eight 120 cu in FT, 4.180 bore, 4.375 stroke, 11.0:1 C/R, 1.143 C/H -1.2cc

Part Number: CPD-BHM8120-2

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Estimated Ship Date: Apr 6, 2026 if ordered today

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2017-2022 Harley Milwaukee Eight 124 ci, 4.180" bore, 4.500" stroke, 11:1 CR 1.080" CH -3.9 dome cc

Part Number: CPD-BHM812439SET

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Estimated Ship Date: Mar 23, 2026 if ordered today

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Powersports Pistons, 2017-2022 Harley Milwaukee Eight 139 ci, 4.500" bore, 4.375" stroke, 11.5:1 CR, 1.143" CH

Part Number: CPD-M5141

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Estimated Ship Date: Apr 6, 2026 if ordered today

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Cylinder Stud, HT Steel, Std. Length, Harley-Davidson®, Milwaukee-Eight 2017-’20

Part Number: KPM-20-21040

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Estimated Ship Date: Mar 23, 2026 if ordered today

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Powersports Pistons, 2017-2022 Harley Milwaukee Eight 124ci, 4.250" bore 4.375" stroke 12.0:1 CR 1.143" CH +5.3cc

Part Number: CPD-M5102

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Estimated Ship Date: Mar 23, 2026 if ordered today

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Engine Piston, HD Milwaukee 8 107cid 11.0:1 CR (X)

Part Number: WIS-40179PS

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Estimated Ship Date: Apr 13, 2026 if ordered today

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Powersports Pistons, 2017-2020 Harley Milwaukee Eight 143 ci, 4.250" bore, 4.500" stroke, 11.25:1 CR 1.080" CH

Part Number: CPD-M5097

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2017-2022 Harley Milwaukee Eight 131 ci, 4.310" bore, 4.500" stroke, 11.5:1 CR, 1.080" CH

Part Number: CPD-M5121-SET

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Estimated Ship Date: Mar 23, 2026 if ordered today

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2017-2022 Harley Milwaukee Eight 139 ci, 4.500" bore, 4.375" stroke, 11.0:1 CR, 1.143" CH

Part Number: CPD-M5140-SET

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Estimated Ship Date: Mar 23, 2026 if ordered today

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2017-2022 Harley Milwaukee Eight 139 ci, 4.500" bore, 4.375" stroke, 12.0:1 CR, 1.143" CH

Part Number: CPD-M5142-SET

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Estimated Ship Date: Mar 23, 2026 if ordered today

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2017-2022 Harley Milwaukee Eight 107 cu in, 3.937 bore, 4.375 stroke, 10.5:1 C/R, 1.143 C/H, 4 dome cc’s

Part Number: CPD-BHM81074SET

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Estimated Ship Date: Mar 23, 2026 if ordered today

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2017-2022 Harley Milwaukee Eight 120 cu in FT, 4.180 bore, 4.375 stroke, 11.0:1 C/R, 1.143 C/H -1.2cc

Part Number: CPD-BHM81202SET

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Estimated Ship Date: Mar 23, 2026 if ordered today

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2017-2020 Harley Milwaukee Eight 139 ci, 4.500" bore, 4.375" stroke, 11.25:1 CR 1.143" CH

Part Number: CPD-M5095-SET

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Estimated Ship Date: Mar 23, 2026 if ordered today

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Powersports Pistons, 2017-2022 Harley Milwaukee Eight 124 ci, 4.180" bore, 4.500" stroke, 11:1 CR 1.080" CH -3.9 dome cc

Part Number: CPD-BHM8124-3-9

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Estimated Ship Date: Apr 3, 2026 if ordered today

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Powersports Pistons, 2017-2022 Harley Milwaukee Eight 131 ci, 4.310" bore, 4.500" stroke, 11.0:1 CR, 1.080" CH

Part Number: CPD-M5120

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Estimated Ship Date: Apr 6, 2026 if ordered today

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Powersports Pistons, 2017-2022 Harley Milwaukee Eight 128ci, 4.250" bore, 4.500" stroke, 12.0:1 CR, 1.080" CH +2.6cc

Part Number: CPD-M5112

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Estimated Ship Date: Apr 6, 2026 if ordered today

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Valve, White Diamond® Inconel, +1.0mm O/S EX, Harley-Davidson®, Milwaukee-Eight, 2017-'20

Part Number: KPM-20-21062K

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Estimated Ship Date: Mar 23, 2026 if ordered today

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Beehive Spring Kit, Titanium, 0.550" Lift, Harley-Davidson®, Milwaukee-Eight, 2017-'20

Part Number: KPM-20-21205

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Estimated Ship Date: Mar 23, 2026 if ordered today

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Rocker Shim Beehive Kit, HT Steel, 0.625" Lift, Harley-Davidson®, Milwaukee-Eight, 2017-'24

Part Number: KPM-20-23950

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Estimated Ship Date: Mar 23, 2026 if ordered today

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Beehive Spring Kit, HT Steel, 0.640" Lift, Harley-Davidson®, Milwaukee-Eight, 2017-'24

Part Number: KPM-20-24400

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Estimated Ship Date: Mar 23, 2026 if ordered today

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Guide, Mng. Brz., IN +0.002, Harley-Davidson®, Milwaukee-Eight, 2017

Part Number: KPM-20-21022M

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Estimated Ship Date: Mar 23, 2026 if ordered today

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