Engine Rotating Assemblies & Rebuild Kits

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

Part Number: NTI-NA-50004-6K

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Rebuild Kit, Complete Bottom End, for use on Honda®, CR250R, Kit

Part Number: HRI-CBK0031

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

Part Number: NTI-NA-50080-BK

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BOTTOM END KIT Polaris

Part Number: HRI-HR00117

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Estimated Ship Date: Mar 11, 2026 if ordered today

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Rebuild Kit, Complete Bottom End, Yamaha, Kit

Part Number: HRI-CBK0139

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Estimated Ship Date: Mar 11, 2026 if ordered today

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COMPLETE BOTTOM END KIT

Part Number: HRI-CBK0140

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Estimated Ship Date: Mar 11, 2026 if ordered today

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Rebuild Kit, Complete Bottom End, Suzuki, RMZ250, Kit

Part Number: HRI-CBK0173

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Estimated Ship Date: Mar 11, 2026 if ordered today

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STANDARD BORE CYLINDER KIT

Part Number: CLW-20010-K01

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Estimated Ship Date: Mar 20, 2026 if ordered today

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Top End Engine Kit STANDARD BORE CYLINDER KIT STANDARD BORE CYLINDER KIT

Part Number: CLW-20010-K02

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Estimated Ship Date: Mar 20, 2026 if ordered today

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BOTTOM END KIT Kawasaki SUZ

Part Number: HRI-CBK0049

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Estimated Ship Date: Mar 11, 2026 if ordered today

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Rebuild Kit, Complete Bottom End, Yamaha, YFM350 Raptor, YFM350X Warrior, Kit

Part Number: HRI-CBK0082

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Estimated Ship Date: Mar 11, 2026 if ordered today

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Rebuild Kit, Complete Bottom End, for use on Honda®, CRF250X, Kit

Part Number: HRI-CBK0126

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Estimated Ship Date: Mar 11, 2026 if ordered today

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Top End Engine Kits STANDARD BORE KIT STANDARD BORE KIT

Part Number: CLW-60001-K01

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Estimated Ship Date: Mar 23, 2026 if ordered today

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Top End Engine Kits CYL WORKS STD BORE KIT HI COMP CYL WORKS STD BORE KIT HI COMP 700 GRIZZLY/VIKING '14-15

Part Number: CLW-20104-K02HC

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Estimated Ship Date: Mar 23, 2026 if ordered today

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Cylinder Kit, Forged Piston, Standard Bore, Kawasaki, 8.80 to 1 Compression Ratio, Rear, Kit

Part Number: CLW-30008-K01

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Estimated Ship Date: Mar 23, 2026 if ordered today

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Big Bore Cylinder Kit, Forged Piston, 96mm Bore, for use on Honda®, Motorcycle, Kit

Part Number: CLW-10006-K01

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Estimated Ship Date: Mar 23, 2026 if ordered today

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STD BORE KIT HI COMP

Part Number: CLW-10001-K01HC

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Estimated Ship Date: Mar 23, 2026 if ordered today

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TOP END REPAIR KIT

Part Number: NTI-NX-70020-CK

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Estimated Ship Date: Mar 23, 2026 if ordered today

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TOP END REPAIR KIT

Part Number: NTI-NX-70020K

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Estimated Ship Date: Mar 23, 2026 if ordered today

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TOP END REPAIR KIT

Part Number: NTI-NX-90000K

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Estimated Ship Date: Mar 23, 2026 if ordered today

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TOP END REPAIR KIT

Part Number: NTI-NA-30080-4K

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Estimated Ship Date: Mar 23, 2026 if ordered today

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Repair Kit, Top End, 66.94mm Bore, High Compression Ratio, Yamaha, Kit

Part Number: NTI-NA-40002-4K

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Estimated Ship Date: Mar 23, 2026 if ordered today

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

Part Number: NTI-NA-40004K

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Estimated Ship Date: Mar 23, 2026 if ordered today

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Piston, TOP END REPAIR KIT

Part Number: NTI-NA-20040-6K

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Estimated Ship Date: Mar 23, 2026 if ordered today

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Cylinder Head TOP END REPAIR KIT TOP END REPAIR KIT

Part Number: NTI-NA-20003K

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Estimated Ship Date: Mar 23, 2026 if ordered today

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