2003 Engine Kits & Rotating Assemblies

Repair Kit, Top End, 89.960mm Bore, 8.50 to 1 Compression Ratio, for use on Honda®, Kit

Part Number: NTI-NA-10000K

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Estimated Ship Date: Mar 9, 2026 if ordered today

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Repair Kit, Top End, 85.970mm Bore, 8.20 to 1 Compression Ratio, for use on Honda®, Kit

Part Number: NTI-NA-10001K

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Estimated Ship Date: Mar 10, 2026 if ordered today

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Repair Kit, Top End, 72.46mm Bore, 6.00 to 1 Compression Ratio, Polaris, Kit

Part Number: NTI-NA-50000-2K

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Mar 10, 2026 if ordered today

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Repair Kit, Top End, 78.71mm Bore, 8.90 to 1 Compression Ratio, for use on Honda®, Kit

Part Number: NTI-NA-10007-1K

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Estimated Ship Date: Mar 10, 2026 if ordered today

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Cylinder Head TOP END REPAIR KIT TOP END REPAIR KIT

Part Number: NTI-NX-30004-CK

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Estimated Ship Date: Mar 9, 2026 if ordered today

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TOP END REPAIR KIT

Part Number: NTI-NA-40019-2K

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Estimated Ship Date: Mar 9, 2026 if ordered today

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Repair Kit, Top End, 48.450mm Bore, 9.20 to 1 Compression Ratio, Kawasaki, Kit

Part Number: NTI-NX-20085K

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Estimated Ship Date: Mar 10, 2026 if ordered today

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Repair Kit, Top End, 81.96mm Bore, 9.00 to 1 Compression Ratio, Arctic Cat, Suzuki, Kit

Part Number: NTI-NA-30010K

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Estimated Ship Date: Monday 2/16/2026 if shipped by air

TOP END REPAIR KIT

Part Number: NTI-NX-20060-BK

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Estimated Ship Date: Mar 9, 2026 if ordered today

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TOP END REPAIR KIT

Part Number: NTI-NA-30050K1

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Estimated Ship Date: Mar 9, 2026 if ordered today

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Rebuild Kit, Complete Bottom End, Kawasaki, Kit

Part Number: HRI-CBK0053

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Estimated Ship Date: Monday 2/16/2026 if shipped by air

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Rebuild Kit, Complete Bottom End, Kawasaki, KX125, Kit

Part Number: HRI-CBK0091

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Estimated Ship Date: Monday 2/16/2026 if shipped by air

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Cylinder Head TOP END REPAIR KIT TOP END REPAIR KIT

Part Number: NTI-NA-30008-2K

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Estimated Ship Date: Monday 2/16/2026 if shipped by air

Repair Kit, Top End, 91.96mm Bore, 9.20 to 1 Compression Ratio, for use on Honda®, Kit

Part Number: NTI-NA-10008K

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Estimated Ship Date: Monday 2/16/2026 if shipped by air

TOP END REPAIR KIT

Part Number: NTI-NA-30080-2K

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 2/16/2026 if shipped by air

Repair Kit, Top End, 82.950mm Bore, 9.50 to 1 Compression Ratio, Yamaha, Kit

Part Number: NTI-NA-40005K

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Estimated Ship Date: Monday 2/16/2026 if shipped by air

Repair Kit, Top End, 83.500mm Bore, 8.60 to 1 Compression Ratio, Yamaha, Kit

Part Number: NTI-NA-40006-2K

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Estimated Ship Date: Monday 2/16/2026 if shipped by air

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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Estimated Ship Date: Monday 2/16/2026 if shipped by air

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Pro LS Rotating Assembly, 330 Cid., 3.810 bore, Standard 3.622 stroke, 24X, 6.098 rod, 7cc dish, 9.8:1 @ 61cc, 9.4:1 @ 65cc, File-Fit ring, H Bearings

Part Number: SUM-R24368107

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Estimated Ship Date: Monday 2/16/2026 if shipped by air

Pro LS Rotating Assembly, 332 Cid., 3.820 bore, Standard 3.622 stroke, 24X, 6.098 rod, 2cc dome, 11:1 @ 61cc, 10.5:1 @ 65cc, File-Fit ring, H Bearings

Part Number: SUM-R24368202

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Estimated Ship Date: Monday 2/16/2026 if shipped by air

Pro LS 4340 Rotating Assembly, 364 Cid., 4.000 bore, 3.622 stroke, 58x, 6.098 rod, 12cc dish, 9.6:1 @ 65cc, 9.2:1 @ 70cc, File-Fit Rings, H Bearings

Part Number: SUM-R583600012

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Estimated Ship Date: Monday 2/16/2026 if shipped by air

Pro LS 4340 Rotating Assembly, 365 Cid., 4.005 bore, 3.622 stroke, 58x, 6.098 rod, 12cc dish, 9.6:1 @ 65cc, 9.2:1 @ 70cc, File-Fit Rings, H Bearings

Part Number: SUM-R583600512

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Estimated Ship Date: Monday 2/16/2026 if shipped by air

Pro LS Rotating Assembly, 370 Cid., 4.030 bore, 3.622 stroke, 58x, 6.098 rod, 2cc Flat Top, 10.9:1 @ 65cc, 10.3:1 @ 70cc, File-Fit Rings, H Bearings

Part Number: SUM-R58360302

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Estimated Ship Date: Monday 2/16/2026 if shipped by air

Pro LS 4340 Rotating Assembly, 371 Cid., 4.040 bore, 3.622 stroke, 58x, 6.098 rod, 12cc dish, 9.8:1 @ 65cc, 9.3:1 @ 70cc, File-Fit Rings, H Bearings

Part Number: SUM-R583604012

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Estimated Ship Date: Monday 2/16/2026 if shipped by air

Pro LS Rotating Assembly, 371 Cid., 4.040 bore, 3.622 stroke, 58x, 6.098 rod, 2cc Flat Top, 10.9:1 @ 65cc, 10.3:1 @ 70cc, File-Fit Rings, H Bearings

Part Number: SUM-R58360402

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Estimated Ship Date: Monday 2/16/2026 if shipped by air