Engine Kits & Rotating Assemblies

Repair Kit, Top End, 84.950mm Bore, 10.00 to 1 Compression Ratio, Yamaha, Kit

Part Number: NTI-NA-40011-2K

Not Yet Reviewed

Estimated Ship Date: Jan 15, 2026 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Repair Kit, Top End, 84.44mm Bore, 6.90 to 1 Compression Ratio, Polaris, Kit

Part Number: NTI-NA-50002-6K

Not Yet Reviewed

Estimated Ship Date: Jan 15, 2026 if ordered today

• Drop Ship
• Special Order

Repair Kit, Top End, 82.94mm Bore, 6.90 to 1 Compression Ratio, Polaris, Kit

Part Number: NTI-NA-50002K

Not Yet Reviewed

Estimated Ship Date: Jan 15, 2026 if ordered today

• Drop Ship
• Free Shipping
• 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: Jan 15, 2026 if ordered today

• Drop Ship
• Special Order

Repair Kit, Top End, 92.47mm Bore, 10.20 to 1 Compression Ratio, Polaris, Kit

Part Number: NTI-NA-50004-2K

Not Yet Reviewed

Estimated Ship Date: Jan 15, 2026 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Cylinder Head TOP END REPAIR KIT TOP END REPAIR KIT

Part Number: NTI-NA-50026K

Not Yet Reviewed

Estimated Ship Date: Jan 15, 2026 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Piston, TOP END REPAIR KIT

Part Number: NTI-NA-50080K1

Not Yet Reviewed

Estimated Ship Date: Jan 15, 2026 if ordered today

• Drop Ship
• Free Shipping
• Special Order