Engine Kits & Rotating Assemblies

TOP END REPAIR KIT

Part Number: NTI-NX-40025-BK

Not Yet Reviewed

Estimated Ship Date: Sep 8, 2025 if ordered today

• Drop Ship
• Special Order

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

Part Number: NTI-NX-40025-CK

Not Yet Reviewed

Estimated Ship Date: Sep 8, 2025 if ordered today

• Drop Ship
• Special Order

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

Part Number: NTI-NX-40025-CKA

Not Yet Reviewed

Estimated Ship Date: Sep 8, 2025 if ordered today

• Drop Ship
• Special Order

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

Part Number: NTI-NX-40025KA

Not Yet Reviewed

Estimated Ship Date: Sep 8, 2025 if ordered today

• Drop Ship
• Special Order

TOP END GASKET KIT, TOP END REPAIR KIT

Part Number: NTI-NX-70029-BK3

Not Yet Reviewed

Estimated Ship Date: Sep 8, 2025 if ordered today

• Drop Ship
• Free Shipping
• Special Order

TOP END REPAIR KIT

Part Number: NTI-NA-40004-4K

Not Yet Reviewed

Estimated Ship Date: Sep 8, 2025 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Repair Kit, Top End, 84.920mm Bore, 9.10 to 1 Compression Ratio, Yamaha, Kit

Part Number: NTI-NA-40008-2K

Not Yet Reviewed

Estimated Ship Date: Sep 8, 2025 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Piston, TOP END REPAIR KIT

Part Number: NTI-NA-50091-BK

Not Yet Reviewed

Estimated Ship Date: Sep 8, 2025 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Piston, TOP END REPAIR KIT

Part Number: NTI-NA-50091-CK

Not Yet Reviewed

Estimated Ship Date: Sep 8, 2025 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Piston, TOP END REPAIR KIT

Part Number: NTI-NA-50091K

Not Yet Reviewed

Estimated Ship Date: Sep 8, 2025 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Cylinder Head TOP END REPAIR KIT TOP END REPAIR KIT

Part Number: NTI-NA-80002K

Not Yet Reviewed

Estimated Ship Date: Sep 8, 2025 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Cylinder Head TOP END REPAIR KIT TOP END REPAIR KIT

Part Number: NTI-NA-80005K

Not Yet Reviewed

Estimated Ship Date: Sep 8, 2025 if ordered today

• Drop Ship
• Free Shipping
• Special Order

TOP END REPAIR KIT

Part Number: NTI-NX-10026-BK

Not Yet Reviewed

Estimated Ship Date: Sep 8, 2025 if ordered today

• Drop Ship
• Special Order

TOP END REPAIR KIT

Part Number: NTI-NX-70051K2

Not Yet Reviewed

Estimated Ship Date: Sep 8, 2025 if ordered today

• Drop Ship
• Special Order

VERTEX TOP END PISTON KIT

Part Number: VPX-VTK22584B-2

Not Yet Reviewed

Estimated Ship Date: Sep 8, 2025 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Repair Kit, Top End, 83.000mm Bore, 8.60 to 1 Compression Ratio, Yamaha, Kit

Part Number: NTI-NA-40006K

Not Yet Reviewed

Estimated Ship Date: Sep 8, 2025 if ordered today

• Drop Ship
• Special Order

Repair Kit, Top End, 81.45mm Bore, 6.00 to 1 Compression Ratio, Polaris, Kit

Part Number: NTI-NA-50001-6K

Not Yet Reviewed

Estimated Ship Date: Sep 8, 2025 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Repair Kit, Top End, 83.44mm Bore, 6.90 to 1 Compression Ratio, Polaris, Kit

Part Number: NTI-NA-50002-2K

Not Yet Reviewed

Estimated Ship Date: Sep 8, 2025 if ordered today

• Drop Ship
• Special Order

Repair Kit, Top End, 74.97mm Bore, 8.60 to 1 Compression Ratio, Polaris, Kit

Part Number: NTI-NA-50003-2K

Not Yet Reviewed

Estimated Ship Date: Sep 8, 2025 if ordered today

• Drop Ship
• Special Order

Repair Kit, Top End, 75.97mm Bore, 8.60 to 1 Compression Ratio, Polaris, Kit

Part Number: NTI-NA-50003-6K

Not Yet Reviewed

Estimated Ship Date: Sep 8, 2025 if ordered today

• Drop Ship
• Special Order

Repair Kit, Top End, 92.97mm Bore, 10.20 to 1 Compression Ratio, Polaris, Kit

Part Number: NTI-NA-50004-4K

Not Yet Reviewed

Estimated Ship Date: Sep 8, 2025 if ordered today

• Drop Ship
• Free Shipping
• Special Order

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

Part Number: NTI-NA-50070K1

Not Yet Reviewed

Estimated Ship Date: Sep 8, 2025 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Repair Kit, Top End, 85.970mm Bore, 11.00 to 1 Compression Ratio, for use on Honda®, Kit

Part Number: NTI-NA-10003-4K

Not Yet Reviewed

Estimated Ship Date: Sep 8, 2025 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Repair Kit, Top End, 84.970mm Bore, 11.00 to 1 Compression Ratio, for use on Honda®, Kit

Part Number: NTI-NA-10003K

Not Yet Reviewed

Estimated Ship Date: Sep 8, 2025 if ordered today

• Drop Ship
• Free Shipping
• Special Order

TOP END REPAIR KIT

Part Number: NTI-NA-40004-6K

Not Yet Reviewed

Estimated Ship Date: Sep 8, 2025 if ordered today

• Drop Ship
• Free Shipping
• Special Order