Engine Rotating Assemblies & Rebuild Kits

Pro LS 4340 Piston and Rod Kit, 383 Cid., 3.903 bore, 4.000 stroke, 6.125 rod, 16cc dish, 9.7:1 @ 65cc, 9.4:1 @ 68cc, File-Fit Rings

Part Number: SUM-PR4090316

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Pro LS 4340 Piston and Rod Kit, 383 Cid., 3.903 bore, 4.000 stroke, 6.125 rod, 5cc dish, 10.9:1 @ 65cc, 10.6:1 @ 68cc, File-Fit Rings

Part Number: SUM-PR409035

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Rebuild Kit, Complete Bottom End, Yamaha, Kit

Part Number: HRI-CBK0129

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Estimated Ship Date: Sep 3, 2025 if ordered today

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Gasket Kit BOTTOM END KIT BOTTOM END KIT

Part Number: HRI-CBK0192

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Estimated Ship Date: Sep 3, 2025 if ordered today

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Repair Kit, Top End, 75.47mm Bore, 8.60 to 1 Compression Ratio, Polaris, Kit

Part Number: NTI-NA-50003-4K

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Estimated Ship Date: Sep 12, 2025 if ordered today

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Cylinder Head TOP END REPAIR KIT TOP END REPAIR KIT

Part Number: NTI-NA-50006K

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Estimated Ship Date: Sep 12, 2025 if ordered today

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Repair Kit, Top End, 54.50mm, Suzuki, Kit

Part Number: NTI-NX-30000-2K

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Estimated Ship Date: Oct 10, 2025 if ordered today

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Repair Kit, Top End, 66.35mm Bore, 8.60 to 1 Compression Ratio, Suzuki, Kit

Part Number: NTI-NX-30024K

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Estimated Ship Date: Sep 12, 2025 if ordered today

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Rebuild Kit, Complete Bottom End, Kawasaki, KX85, Kit

Part Number: HRI-CBK0029

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Estimated Ship Date: Sep 3, 2025 if ordered today

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Repair Kit, Top End, 52.500mm Bore, 9.60 to 1 Compression Ratio, Kawasaki, Kit

Part Number: NTI-NX-20010K

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Estimated Ship Date: Sep 11, 2025 if ordered today

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Rebuild Kit, Complete Bottom End, Yamaha, YZ250F, Kit

Part Number: HRI-CBK0087

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Estimated Ship Date: Sep 2, 2025 if ordered today

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Gasket Kit BOTTOM END KIT BOTTOM END KIT

Part Number: HRI-CBK0186

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Estimated Ship Date: Sep 2, 2025 if ordered today

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BOTTOM END KIT

Part Number: HRI-CBK0231

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Estimated Ship Date: Sep 2, 2025 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: Sep 11, 2025 if ordered today

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CYLINDER, STANDARD BORE KIT POLARIS

Part Number: CLW-60004-K01

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Estimated Ship Date: Sep 11, 2025 if ordered today

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Repair Kit, Top End, 66.350mm Bore, 8.60 to 1 Compression Ratio, Kawasaki, Kit

Part Number: NTI-NX-20025K

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Estimated Ship Date: Sep 15, 2025 if ordered today

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TOP END REPAIR KIT

Part Number: NTI-NA-50001K

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Estimated Ship Date: Sep 15, 2025 if ordered today

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TOP END REPAIR KIT

Part Number: NTI-NA-50025-2K

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Estimated Ship Date: Sep 15, 2025 if ordered today

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TOP END REPAIR KIT

Part Number: NTI-NA-50025K

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Estimated Ship Date: Sep 15, 2025 if ordered today

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Repair Kit, Top End, 42.950mm Bore, 8.40 to 1 Compression Ratio, Kawasaki, Kit

Part Number: NTI-NX-20060K

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Estimated Ship Date: Sep 15, 2025 if ordered today

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Repair Kit, Top End, 66.350mm Bore, 10.90 to 1 Compression Ratio, Yamaha, Kit

Part Number: NTI-NX-40025K

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Estimated Ship Date: Sep 15, 2025 if ordered today

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VERTEX TOP END PISTON KIT

Part Number: VPX-VTK22860B

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Estimated Ship Date: Sep 15, 2025 if ordered today

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Vehicle Maintenance Kit, Complete Engine Maintenance, OE 24 789 03-S, Kohler, Kit

Part Number: RRA-7-09742

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Estimated Ship Date: Sep 22, 2025 if ordered today

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Vehicle Maintenance Kit, Complete Engine Maintenance, OE 16 789 02-S, Kohler, Kit

Part Number: RRA-7-09746

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Estimated Ship Date: Sep 22, 2025 if ordered today

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Vehicle Maintenance Kit, Complete Engine Maintenance, OE 32 789 02-S, Kohler, Kit

Part Number: RRA-7-09747

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Estimated Ship Date: Sep 22, 2025 if ordered today

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