Engine Kits & Rotating Assemblies

Repair Kit, Top End, 66.340mm Bore, 8.70 to 1 Compression Ratio, for use on Honda®, Kit

Part Number: NTI-NX-10025K

Not Yet Reviewed

Estimated Ship Date: Oct 3, 2025 if ordered today

• Drop Ship
• Special Order

Repair Kit, Top End, 74.45mm Bore, 8.90 to 1 Compression Ratio, for use on Honda®, Kit

Part Number: NTI-NA-10005-2K

Not Yet Reviewed

Estimated Ship Date: Oct 3, 2025 if ordered today

• Special Order

TOP END REPAIR KIT

Part Number: NTI-NA-10043-4K

Not Yet Reviewed

Estimated Ship Date: Oct 3, 2025 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Repair Kit, Top End, 67.47mm Bore, 8.30 to 1 Compression Ratio, Kawasaki, Kit

Part Number: NTI-NA-20036-2K

Not Yet Reviewed

Estimated Ship Date: Oct 3, 2025 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Repair Kit, Top End, 89.97mm Bore, 11.30 to 1 Compression Ratio, Arctic Cat, Kawasaki, Suzuki, Kit

Part Number: NTI-NA-30002-BK

Not Yet Reviewed

Estimated Ship Date: Oct 3, 2025 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Cylinder Head TOP END REPAIR KIT TOP END REPAIR KIT

Part Number: NTI-NA-30014-CK

Not Yet Reviewed

Estimated Ship Date: Oct 3, 2025 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Cylinder Head TOP END REPAIR KIT TOP END REPAIR KIT

Part Number: NTI-NA-30015K

Not Yet Reviewed

Estimated Ship Date: Oct 3, 2025 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Repair Kit, Top End, 87.45mm Bore, 10.20 to 1 Compression Ratio, Arctic Cat, Suzuki, Kit

Part Number: NTI-NA-30050K

Not Yet Reviewed

Estimated Ship Date: Oct 3, 2025 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Rebuild Kit, Complete Bottom End, for use on Honda®, Kit

Part Number: HRI-CBK0045

Not Yet Reviewed

Estimated Ship Date: Sep 25, 2025 if ordered today

• Free Shipping
• Special Order

Top End Engine Kits CYL WORKS BIG BORE POWER VALVE CYL WORKS BIG BORE POWER VALVE INCL SIDE VALVES YZ250 '99-1

Part Number: CLW-CW-PV-K02

Not Yet Reviewed

Estimated Ship Date: Oct 6, 2025 if ordered today

• Free Shipping
• Special Order

TOP END GASKET KIT, TOP END REPAIR KIT (FORGED PISTON)

Part Number: NTI-FX-40032K

Not Yet Reviewed

Estimated Ship Date: Oct 6, 2025 if ordered today

• Drop Ship
• Free Shipping
• Special Order

TOP END GASKET KIT, TOP END REPAIR KIT (FORGED PISTON)

Part Number: NTI-FX-40045K

Not Yet Reviewed

Estimated Ship Date: Oct 6, 2025 if ordered today

• Free Shipping
• Special Order

TOP END REPAIR KIT

Part Number: NTI-NA-10001-1K

Not Yet Reviewed

Estimated Ship Date: Oct 6, 2025 if ordered today

• 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: Oct 6, 2025 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Cylinder Head TOP END REPAIR KIT TOP END REPAIR KIT

Part Number: NTI-NA-10014-4K

Not Yet Reviewed

Estimated Ship Date: Oct 6, 2025 if ordered today

• Free Shipping
• Special Order

Repair Kit, Top End, 68.95mm Bore, 9.50 to 1 Compression Ratio, for use on Honda®, Kit

Part Number: NTI-NA-10027-2K

Not Yet Reviewed

Estimated Ship Date: Oct 6, 2025 if ordered today

• Special Order

Piston, TOP END REPAIR KIT

Part Number: NTI-NA-20062K

Not Yet Reviewed

Estimated Ship Date: Oct 6, 2025 if ordered today

• Free Shipping
• Special Order

Cylinder Head TOP END REPAIR KIT TOP END REPAIR KIT

Part Number: NTI-NA-30014-BK

Not Yet Reviewed

Estimated Ship Date: Oct 6, 2025 if ordered today

• Free Shipping
• Special Order

Repair Kit, Top End, 100.470mm Bore, 9.20 to 1 Compression Ratio, Yamaha, Kit

Part Number: NTI-NA-40004-2K

Not Yet Reviewed

Estimated Ship Date: Oct 6, 2025 if ordered today

• Free Shipping
• Special Order

Repair Kit, Top End, 99.970mm Bore, 9.20 to 1 Compression Ratio, Yamaha, Kit

Part Number: NTI-NA-40004K

Not Yet Reviewed

Estimated Ship Date: Oct 6, 2025 if ordered today

• Free Shipping
• Special Order

Repair Kit, Top End, 84.420mm Bore, 9.10 to 1 Compression Ratio, Yamaha, Kit

Part Number: NTI-NA-40008K

Not Yet Reviewed

Estimated Ship Date: Oct 6, 2025 if ordered today

• Free Shipping
• Special Order

Repair Kit, Top End, 100.470mm Bore, 9.20 to 1 Compression Ratio, Yamaha, Kit

Part Number: NTI-NA-40010-2K

Not Yet Reviewed

Estimated Ship Date: Oct 6, 2025 if ordered today

• Free Shipping
• Special Order

Piston, TOP END REPAIR KIT

Part Number: NTI-NA-40013K

Not Yet Reviewed

Estimated Ship Date: Oct 6, 2025 if ordered today

• Free Shipping
• Special Order

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

Part Number: NTI-NX-40025K

Not Yet Reviewed

Estimated Ship Date: Oct 6, 2025 if ordered today

• Special Order

Cylinder Head TOP END REPAIR KIT TOP END REPAIR KIT

Part Number: NTI-NA-50011-4K

Not Yet Reviewed

Estimated Ship Date: Oct 6, 2025 if ordered today

• Free Shipping
• Special Order