Powersports Top End Engine Kits

Top End Engine Kit, Sidewinder Big Bore, Black Wrinkle Finish, 4 in., Forged Piston, Harley-Davidson®, Kit

Part Number: SSY-910-0651

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Estimated Ship Date: Mar 17, 2026 if ordered today

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Big Bore Kit, 107 in., Drop-In, 3.937 in. Bore, Wrinkle Black Cylinders with Highlighted Fins, Harley-Davidson®, Kit

Part Number: SSY-910-0500

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Estimated Ship Date: Mar 18, 2026 if ordered today

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S&S 98 BIG BORE KIT BLK

Part Number: SSY-910-0481

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Cyl. Head Serv. Kit, Kawasaki®, KX250F, 2004-2006

Part Number: KPM-40-41500

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Cyl. Head Serv. Kit, Kawasaki®, KX250F, 2007-2008

Part Number: KPM-40-41510

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Engine Kit, Harley-Davidson®, Twin Cam 88"

Part Number: KPM-20-23050

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TOP END KIT

Part Number: KPM-30-32700

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Standard Bore Cylinder Kit, CYLINDER KIT 80.00/STD 10.2:1 POL

Part Number: CLW-60002-K04

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Estimated Ship Date: Mar 17, 2026 if ordered today

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S&S Cycle 00-21 Sportster Models 1200cc to 1250cc Hooligan Kit - Wrinkle Black

Part Number: SSY-910-0701

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Estimated Ship Date: Mar 18, 2026 if ordered today

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ENGINE CYLINDERS, 99-06 TWIMCAM (EXC 06 DYNA), POWER PACK 585CE BLK

Part Number: SSY-330-0664

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Estimated Ship Date: Mar 18, 2026 if ordered today

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S&S Cycle 2017+ M8 129in Power Pack w/ Black Pushrod Tubes & Cam Chain Tensioners - Blk w/ Highlight

Part Number: SSY-310-1225

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Estimated Ship Date: Mar 18, 2026 if ordered today

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S&S Cycle 86-19 Sportster Models 883 to 1200cc Conversion Kit - Wrinkle Black

Part Number: SSY-910-0687

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Estimated Ship Date: Mar 19, 2026 if ordered today

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Top End Engine Kit, M8 124 in. Big Bore, Wrinkle Black Finish with Highlighted Fins, 4.250 in., Forged Piston, Harley-Davidson®, Kit

Part Number: SSY-910-0625

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Estimated Ship Date: Mar 19, 2026 if ordered today

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PERFORMANCE, 131" KIT - BLACK FINS M8

Part Number: SSY-910-0763

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Estimated Ship Date: Mar 19, 2026 if ordered today

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Standard Bore Cylinder Kit, CYLINDER KIT 66.40/STD YAM

Part Number: CLW-20009-K02

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Estimated Ship Date: Mar 19, 2026 if ordered today

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Top End Engine Kit, 110 in Power Package, Black Wrinkle Finish, 585 Easy Start Cams, Harley-Davidson®, Kit

Part Number: SSY-330-0668

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Estimated Ship Date: Mar 19, 2026 if ordered today

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Standard Bore Cylinder Kit, CYLINDER KIT 80.00/STD 10.2:1 POL

Part Number: CLW-60002-K05

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Estimated Ship Date: Mar 19, 2026 if ordered today

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Standard Bore Cylinder Kit, CYLINDER KIT 80.00/STD 9.4:1 POL

Part Number: CLW-60002-K07

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Estimated Ship Date: Mar 19, 2026 if ordered today

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Standard Bore Cylinder Kit, CYLINDER KIT 39.50/STD HUSQ/KTM

Part Number: CLW-CW50012K01

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Estimated Ship Date: Mar 20, 2026 if ordered today

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