Engine Kits & Rotating Assemblies

Repair Kit, Top End, 80.95mm Bore, 6.00 to 1 Compression Ratio, Polaris, Kit

Part Number: NTI-NA-50001-4K

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Estimated Ship Date: Aug 4, 2025 if ordered today

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Repair Kit, Top End, 83.450mm Bore, 9.50 to 1 Compression Ratio, Yamaha, Kit

Part Number: NTI-NA-40005-2K

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Estimated Ship Date: Aug 4, 2025 if ordered today

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Repair Kit, Top End, 66.370mm Bore, 8.60 to 1 Compression Ratio, Kawasaki, Kit

Part Number: NTI-NX-20025-CK

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Estimated Ship Date: Jul 16, 2025 if ordered today

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

Part Number: NTI-NX-40026K

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Estimated Ship Date: Aug 4, 2025 if ordered today

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Cylinder Head TOP END REPAIR KIT TOP END REPAIR KIT

Part Number: NTI-NA-10012-2K

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Estimated Ship Date: Monday 7/14/2025

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Repair Kit, Top End, 91.96mm Bore, 9.20 to 1 Compression Ratio, for use on Honda®, Kit

Part Number: NTI-NA-10008K

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Estimated Ship Date: Monday 7/14/2025

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Cylinder Head NAMURA TOP END REPAIR KIT NAMURA TOP END REPAIR KIT

Part Number: NTI-NA-20005-2K

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Estimated Ship Date: Monday 7/14/2025

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Repair Kit, Top End, 84.98mm Bore, 9.30 to 1 Compression Ratio, Kawasaki, Kit

Part Number: NTI-NA-20075-CK

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Estimated Ship Date: Monday 7/14/2025

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Repair Kit, Top End, 67.35mm Bore, 8.60 to 1 Compression Ratio, Kawasaki, Kit

Part Number: NTI-NX-20025-4K

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Estimated Ship Date: Monday 7/14/2025

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Repair Kit, Top End, 82.950mm Bore, 9.50 to 1 Compression Ratio, Yamaha, Kit

Part Number: NTI-NA-40005K

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Estimated Ship Date: Monday 7/14/2025

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TOP END REPAIR KIT

Part Number: NTI-NA-50070-BK1

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Estimated Ship Date: Monday 7/14/2025

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Repair Kit, Top End, 79.960mm Bore, 10.20 to 1 Compression Ratio, Polaris, Kit

Part Number: NTI-NA-50080-BK

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Estimated Ship Date: Monday 7/14/2025

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Engine Rebuild Kits, Re-Ring, 4.030 in. Bore, 0.010 in. Rod Bearing Crank Undersize, 0.010 in. Main Bearing Crank Undersize, Gaskets, Chevrolet, Kit

Part Number: FEM-205-6284M311

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Estimated Ship Date: Monday 7/14/2025

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Repair Kit, Top End, 93.47mm Bore, 10.20 to 1 Compression Ratio, Polaris, Kit

Part Number: NTI-NA-50004-6K

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Estimated Ship Date: Monday 7/14/2025

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Engine Re-Ring, Moly, 4.000 in. Bore, .010 in. Rod, .010 in. Main, Ford, 351W, Kit

Part Number: FEM-205761M-011

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Estimated Ship Date: Monday 7/14/2025

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Engine Re-Ring, Moly, 4.000 in. Bore, .010 in. Rod, .010 in. Main, Ford, 5.0L, Kit

Part Number: FEM-205887M-011

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Estimated Ship Date: Monday 7/14/2025

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Engine Re-Ring, Moly, 4 in. Bore, Standard Rod, Chevy, 350, Kit

Part Number: FEM-2056281-000

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Estimated Ship Date: Monday 7/14/2025

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Engine Rebuild Kits, Re-Ring, 4.165 in. Bore, 0.010 in. Rod Bearing Crankshaft Undersize, 0.010 in. Main Bearing Crankshaft Undersize, Chevy, Kit

Part Number: FEM-2056282M411

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Estimated Ship Date: Monday 7/14/2025

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Engine Re-Ring, Moly, 4.030 in. Bore, Standard Rod, Standard Main, Chevy, 350, Kit

Part Number: FEM-2056287M-300

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Estimated Ship Date: Monday 7/14/2025

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Engine Re-Ring, Moly, 4.000 in. Bore, .010 in. Rod, Chevy, 350, Kit

Part Number: FEM-205630-01

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Estimated Ship Date: Monday 7/14/2025

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Engine Re-Ring, Moly, 4.000 in. Bore, .020 in. Rod, Chevy, 350, Kit

Part Number: FEM-205630-02

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Estimated Ship Date: Monday 7/14/2025

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Engine Re-Ring, Moly, 4.010 in. Bore, Standard Rod, Chevy, 350, Kit

Part Number: FEM-205630-10

4.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 7/14/2025

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Engine Re-Ring, Moly, 4.030 in. Bore, .010 in. Rod, Chevy, 350, Kit

Part Number: FEM-205630-31

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Estimated Ship Date: Monday 7/14/2025

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Engine Re-Ring, Moly, 4.030 in. Bore, .020 in. Rod, Chevy, 350, Kit

Part Number: FEM-205630-32

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Estimated Ship Date: Monday 7/14/2025

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Engine Re-Ring, Moly, 4.000 in. Bore, Standard Rod, .010 in. Main, Chevy, 350, Kit

Part Number: FEM-205630M-001

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Estimated Ship Date: Monday 7/14/2025

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