Engine Rotating Assemblies & Rebuild Kits

Cylinder Head TOP END REPAIR KIT TOP END REPAIR KIT

Part Number: NTI-NX-30004K

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Estimated Ship Date: Aug 11, 2025 if ordered today

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Repair Kit, Top End, 53.950mm Bore, 8.90 to 1 Compression Ratio, Yamaha, Kit

Part Number: NTI-NX-40000-BK

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Estimated Ship Date: Aug 11, 2025 if ordered today

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Repair Kit, Top End, 53.950mm Bore, 10.80 to 1 Compression Ratio, Yamaha, Kit

Part Number: NTI-NX-40001-BK

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Estimated Ship Date: Aug 11, 2025 if ordered today

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Repair Kit, Top End, 47.500mm Bore, 6.60 to 1 Compression Ratio, Yamaha, Kit

Part Number: NTI-NX-40008-2K

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Estimated Ship Date: Aug 11, 2025 if ordered today

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Repair Kit, Top End, 66.360mm Bore, 10.90 to 1 Compression Ratio, Yamaha, Kit

Part Number: NTI-NX-40025-CK

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Estimated Ship Date: Aug 11, 2025 if ordered today

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Repair Kit, Top End, 66.370mm Bore, 10.90 to 1 Compression Ratio, Yamaha, Kit

Part Number: NTI-NX-40025-CKA

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Estimated Ship Date: Aug 11, 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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Repair Kit, Top End, 66.350mm Bore, 10.90 to 1 Compression Ratio, Yamaha, Kit

Part Number: NTI-NX-40025KA

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Repair Kit, Top End, 67.94mm Bore, 10.60 to 1 Compression Ratio, Yamaha, Kit

Part Number: NTI-NX-40026KA

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Estimated Ship Date: Aug 11, 2025 if ordered today

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VERTEX TOP END PISTON KIT

Part Number: VPX-VTK23429CD

4.0 out of 5 stars ( 1 )

Estimated Ship Date: Aug 11, 2025 if ordered today

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TOP END KIT FHC WITH CAM CHAIN

Part Number: VPX-VTKTC23515A

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Estimated Ship Date: Aug 11, 2025 if ordered today

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VERTEX PISTON KIT

Part Number: VPX-24259050

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Estimated Ship Date: Aug 11, 2025 if ordered today

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3.622" stroke, internal balance, billet 4340 steel, center-counterweighted Chevrolet Gen III "LS", no reluctor

Part Number: ESP-334536236100

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Estimated Ship Date: Aug 19, 2025 if ordered today

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4.000" stroke, internal balance, billet 4340 steel, center-counterweighted Chevrolet Gen III "LS", no reluctor

Part Number: ESP-334540016100

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Estimated Ship Date: Aug 19, 2025 if ordered today

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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: Jul 28, 2025 if ordered today

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Rebuild Kit, Complete Bottom End, Kawasaki, Kit

Part Number: HRI-CBK0127

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Estimated Ship Date: Aug 4, 2025 if ordered today

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Rebuild Kit, Complete Bottom End, for use on Honda®, Kit

Part Number: HRI-CBK0138

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Estimated Ship Date: Aug 4, 2025 if ordered today

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Rebuild Kit, Complete Bottom End, Yamaha, Kit

Part Number: HRI-CBK0139

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Estimated Ship Date: Aug 4, 2025 if ordered today

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Rebuild Kit, Complete Bottom End, Yamaha, YFZ450, Kit

Part Number: HRI-CBK0146

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Estimated Ship Date: Aug 4, 2025 if ordered today

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Rebuild Kit, Complete Bottom End, Yamaha, YFM660F, YXR66F, Kit

Part Number: HRI-CBK0152

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Estimated Ship Date: Aug 4, 2025 if ordered today

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COMPLETE BOTTOM END KIT

Part Number: HRI-CBK0187

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Estimated Ship Date: Aug 4, 2025 if ordered today

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Rebuild Kit, Complete Bottom End, Kawasaki, Kit

Part Number: HRI-CBK0193

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Estimated Ship Date: Aug 4, 2025 if ordered today

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Rebuild Kit, Complete Bottom End, Yamaha, Kit

Part Number: HRI-CBK0223

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Estimated Ship Date: Aug 4, 2025 if ordered today

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Rebuild Kit, Complete Bottom End, Polaris, 800, Kit

Part Number: HRI-CBK0123

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Aug 4, 2025 if ordered today

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Rebuild Kit, Complete Bottom End, Stroker Crank, Yamaha, Kit

Part Number: HRI-CBK0150

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Estimated Ship Date: Aug 4, 2025 if ordered today

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