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

Not Yet Reviewed

Estimated Ship Date: Aug 4, 2025 if ordered today

• Drop Ship
• Free Shipping
• Special Order

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

Part Number: NTI-NA-40005-2K

Not Yet Reviewed

Estimated Ship Date: Aug 4, 2025 if ordered today

• Drop Ship
• Free Shipping
• Special Order

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

Part Number: NTI-NX-20025-CK

Not Yet Reviewed

Estimated Ship Date: Jul 16, 2025 if ordered today

• Free Shipping
• Special Order

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

Part Number: NTI-NX-40026K

Not Yet Reviewed

Estimated Ship Date: Aug 5, 2025 if ordered today

• Drop Ship
• Special Order

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

Part Number: NTI-NA-20005-2K

Not Yet Reviewed

Estimated Ship Date: Tomorrow

• Free Shipping

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

Part Number: NTI-NA-20075-CK

Not Yet Reviewed

Estimated Ship Date: Tomorrow

• Free Shipping

TOP END REPAIR KIT

Part Number: NTI-NA-50070-BK1

Not Yet Reviewed

Estimated Ship Date: Tomorrow

• Free Shipping

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

Part Number: NTI-NA-50080-BK

Not Yet Reviewed

Estimated Ship Date: Tomorrow

• Free Shipping

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

Part Number: NTI-NX-20025-4K

Not Yet Reviewed

Estimated Ship Date: Tomorrow

• Free Shipping

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

Part Number: NTI-NA-40005K

Not Yet Reviewed

Estimated Ship Date: Tomorrow

• Free Shipping

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

Part Number: NTI-NA-10008K

Not Yet Reviewed

Estimated Ship Date: Tomorrow

• Free Shipping

Cylinder Head TOP END REPAIR KIT TOP END REPAIR KIT

Part Number: NTI-NA-10012-2K

Not Yet Reviewed

Estimated Ship Date: Tomorrow

• Free Shipping

Engine Re-Ring, 4.000 in. Bore, .030 in. Rod, .030 in. Main, Chevy, Kit

Part Number: SUM-RRKIT1-033

Not Yet Reviewed

Estimated Ship Date: Tomorrow

• Free Shipping

Engine Re-Ring, 4.040 in. Bore, .030 in. Rod, .030 in. Main, Chevy, Kit

Part Number: SUM-RRKIT1-423

Not Yet Reviewed

Estimated Ship Date: Tomorrow

• Free Shipping

Engine Re-Ring, 4.040 in. Bore, .030 in. Rod, .010 in. Main, Chevy, Kit

Part Number: SUM-RRKIT1-431

Not Yet Reviewed

Estimated Ship Date: Tomorrow

• Free Shipping

Engine Re-Ring, 4.040 in. Bore, .030 in. Rod, .030 in. Main, Chevy, Kit

Part Number: SUM-RRKIT1-433

Not Yet Reviewed

Estimated Ship Date: Tomorrow

• Free Shipping

Engine Kit, Start Up, Crate Engine, GM, V8, SBC, Kit

Part Number: SUM-CSUMGMINS01

Not Yet Reviewed

Cannot be shipped Internationally

• Restricted
• Free Shipping

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

Part Number: NTI-NA-50004-6K

Not Yet Reviewed

Estimated Ship Date: Tomorrow

• Free Shipping

Engine Re-Ring, Moly, 4.030 in. Bore, .010 in. Rod, Ford, 351/400, Kit

Part Number: FEM-205624-31

Not Yet Reviewed

Estimated Ship Date: Tomorrow

• Free Shipping

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

Part Number: FEM-205624A-01

Not Yet Reviewed

Estimated Ship Date: Tomorrow

• Free Shipping

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

Part Number: FEM-205887M-011

Not Yet Reviewed

Estimated Ship Date: Tomorrow

• Free Shipping

Engine Re-Ring, Moly, 3.736 in. Bore, .010 in. Rod, .010 in. Main, Chevy, 305, Kit

Part Number: FEM-2056026M-011

Not Yet Reviewed

Estimated Ship Date: Tomorrow

• Free Shipping

Engine Re-Ring, Moly, 3.875 in. Bore, .010 in. Rod, Standard Main, Chevy, 307, Kit

Part Number: FEM-205620M-010

Not Yet Reviewed

Estimated Ship Date: Tomorrow

• Free Shipping

Engine Re-Ring, Moly Rings, 3.736 in. Bore, .010 in. Rod, .010 in. Main, Chevy, 305, Kit

Part Number: FEM-2056027M-011

Not Yet Reviewed

Estimated Ship Date: Tomorrow

• Free Shipping

Engine Re-Ring, Moly, 4.005 in. Bore, .010 in. Rod, .010 Main, Chevy, 307, Kit

Part Number: FEM-205620M-311

Not Yet Reviewed

Estimated Ship Date: Tomorrow

• Free Shipping