Engine Kits & Rotating Assemblies

TOP END REPAIR KIT

Part Number: NTI-NX-10000-6K

Not Yet Reviewed

Estimated Ship Date: Dec 29, 2025 if ordered today

• Special Order

Repair Kit, Top End, 53.940mm Bore, 8.90 to 1 Compression Ratio, Yamaha, Kit

Part Number: NTI-NX-40000K

Not Yet Reviewed

Estimated Ship Date: Dec 30, 2025 if ordered today

• Special Order

Repair Kit, Top End, 46.940mm Bore, 8.40 to 1 Compression Ratio, for use on Honda®, Kit

Part Number: NTI-NX-10080K1

Not Yet Reviewed

Estimated Ship Date: Jan 5, 2026 if ordered today

• Special Order

Repair Kit, Top End, 72.96mm Bore, 6.00 to 1 Compression Ratio, Polaris, Kit

Part Number: NTI-NA-50000-4K

Not Yet Reviewed

Estimated Ship Date: Jan 5, 2026 if ordered today

• Special Order

MASTER KIT INCOMPLETE- STD

Part Number: MAH-MX468KIT

Not Yet Reviewed

Estimated Ship Date: Jan 26, 2026 if ordered today

• Special Order

MASTER KIT

Part Number: MAH-MGX1482

Not Yet Reviewed

Estimated Ship Date: Jan 26, 2026 if ordered today

• Special Order

RERING KIT- STD

Part Number: MAH-RR3074

Not Yet Reviewed

Estimated Ship Date: Jan 26, 2026 if ordered today

• Special Order

RERING KIT- STD

Part Number: MAH-RR489

Not Yet Reviewed

Estimated Ship Date: Jan 26, 2026 if ordered today

• Special Order

RERING KIT STANDARD

Part Number: MAH-RR2238

Not Yet Reviewed

Estimated Ship Date: Jan 26, 2026 if ordered today

• Special Order

Repair Kit, Top End, 47.44mm Bore, 8.20 to 1 Compression Ratio, Yamaha, Kit

Part Number: NTI-NX-40085K

Not Yet Reviewed

Estimated Ship Date: Jan 15, 2026 if ordered today

• Special Order

Repair Kit, Top End, 67.47mm Bore, 9.20 to 1 Compression Ratio, Suzuki, Kit

Part Number: NTI-NA-30000-6K

Not Yet Reviewed

Estimated Ship Date: Jan 15, 2026 if ordered today

• Special Order

Cylinder Head TOP END REPAIR KIT TOP END REPAIR KIT

Part Number: NTI-NA-30008-6K

Not Yet Reviewed

Estimated Ship Date: Jan 15, 2026 if ordered today

• Special Order

Repair Kit, Top End, 53.96mm Bore, Suzuki, Kit

Part Number: NTI-NX-30000K

Not Yet Reviewed

Estimated Ship Date: Jan 5, 2026 if ordered today

• Special Order

QB FULL TOP END SET

Part Number: QDB-56-3936

Not Yet Reviewed

Estimated Ship Date: Jan 5, 2026 if ordered today

• Special Order

Cylinder Head TOP END REPAIR KIT TOP END REPAIR KIT

Part Number: NTI-NA-40015-4K

Not Yet Reviewed

Estimated Ship Date: Jan 6, 2026 if ordered today

• Special Order

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

Part Number: NTI-NX-40000-BK

Not Yet Reviewed

Estimated Ship Date: Jan 6, 2026 if ordered today

• Special Order

REAR END BRACKET

Part Number: MAH-MSX422

Not Yet Reviewed

Estimated Ship Date: Jan 20, 2026 if ordered today

• Special Order

PERFORMANCE INTAKE MFLD.

Part Number: MAH-MS20110

Not Yet Reviewed

Estimated Ship Date: Jan 20, 2026 if ordered today

• Special Order

Repair Kit, Top End, 53.96mm Bore, 8.30 to 1 Compression Ratio, Suzuki, Kit

Part Number: NTI-NX-30000-CK

Not Yet Reviewed

Estimated Ship Date: Jan 9, 2026 if ordered today

• Special Order

Cylinder Head TOP END REPAIR KIT TOP END REPAIR KIT

Part Number: NTI-NA-40015-6K

Not Yet Reviewed

Estimated Ship Date: Jan 13, 2026 if ordered today

• Special Order

TOP END REPAIR KIT

Part Number: NTI-NX-70004-CK

Not Yet Reviewed

Estimated Ship Date: Jan 13, 2026 if ordered today

• Special Order

TOP END REPAIR KIT

Part Number: NTI-NA-10090K

Not Yet Reviewed

Estimated Ship Date: Jan 13, 2026 if ordered today

• Special Order

TOP END REPAIR KIT

Part Number: NTI-NX-10003K1

Not Yet Reviewed

Estimated Ship Date: Jan 13, 2026 if ordered today

• Special Order

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

Part Number: NTI-NX-20013K

Not Yet Reviewed

Estimated Ship Date: Jan 13, 2026 if ordered today

• Special Order

Cylinder Head TOP END REPAIR KIT TOP END REPAIR KIT

Part Number: NTI-NX-20014-CK

Not Yet Reviewed

Estimated Ship Date: Jan 13, 2026 if ordered today

• Special Order