Engine Rotating Assemblies & Rebuild Kits

Pro LS 4340 Rotating Assembly, 346 Cid., 3.898 bore, 3.622 stroke, 24X, 6.125 rod, 3cc dome, 11:1 @ 65cc, 10.6:1 @ 68cc, File-Fit Rings, H Bearings

Part Number: SUM-R2436L8983

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Estimated Ship Date: Today

Top End Engine Kit, Sidewinder Big Bore, Black Wrinkle Finish, 4 in., Forged Piston, Harley-Davidson®, Kit

Part Number: SSY-910-0651

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Estimated Ship Date: Dec 22, 2025 if ordered today

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Repair Kit, Top End, 67.47mm Bore, 9.30 to 1 Compression Ratio, Kawasaki, Kit

Part Number: NTI-NA-20001-2K

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Estimated Ship Date: Dec 22, 2025 if ordered today

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BOTTOM END KIT Polaris

Part Number: HRI-HR00117

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Estimated Ship Date: Dec 11, 2025 if ordered today

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VERTEX COMPLETE ENGINE REBUILD KIT

Part Number: VPX-WR101-096

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Estimated Ship Date: Dec 22, 2025 if ordered today

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Cylinder Head TOP END REPAIR KIT TOP END REPAIR KIT

Part Number: NTI-NA-30008K

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Estimated Ship Date: Today

Engine Rebuild, Hypereutectic Flat, 4.060 in. Bore, .030 in. Rod, .030 in. Main, Chevy, 350, Kit

Part Number: SUM-SBCKIT3-633

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Engine Re-Ring, 4.030 in. Bore, .010 in. Rod, .020 in. Main, Chevy, Kit

Part Number: SUM-RRKIT1-312

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Estimated Ship Date: Today

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Engine Rebuild, Hypereutectic Dish, 4.030 in. Bore, .020 in. Crankshaft Undersize Rod, .020 in. Crankshaft Undersize Main, Chevy 383

Part Number: SUM-SBCKIT2-322

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Engine Re-Ring, 4.040 in. Bore, .020 in. Rod, .020 in. Main, Chevy, Kit

Part Number: SUM-RRKIT1-422

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Estimated Ship Date: Today

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Engine Re-Ring, 4.030 in. Bore, .030 in. Rod, .030 in. Main, Chevy, Kit

Part Number: SUM-RRKIT1-333

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Estimated Ship Date: Today

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Engine Rebuild, Hypereutectic Dish, 4.040 in. Bore, .030 in. Crankshaft Undersize Rod, .030 in. Crankshaft Undersize Main, Chevy 383

Part Number: SUM-SBCKIT2-433

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Engine Rebuild, Hypereutectic Flat, 4.040 in. Bore, .030 in. Rod, .010 in. Main, Chevy, 350, Kit

Part Number: SUM-SBCKIT1-431

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Engine Rebuild, Hypereutectic Dish, 4.000 in. Bore, Standard Rod, Standard Main, Chevy, 383, Kit

Part Number: SUM-SBCKIT2-000

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Repair Kit, Top End, 42.950mm Bore, 8.40 to 1 Compression Ratio, Kawasaki, Kit

Part Number: NTI-NX-20060K

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Estimated Ship Date: Dec 22, 2025 if ordered today

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TOP END REPAIR KIT

Part Number: NTI-NX-30080-6K

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Estimated Ship Date: Dec 22, 2025 if ordered today

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TOP END REPAIR KIT

Part Number: NTI-NX-30080-2K

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Estimated Ship Date: Dec 19, 2025 if ordered today

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Complete Engine Rebuild Kit, Stock Bore, Stock Stroke, KTM, Kit

Part Number: VPX-WR101-056

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Estimated Ship Date: Dec 22, 2025 if ordered today

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BOTTOM END KIT Yamaha

Part Number: HRI-CBK0015

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Estimated Ship Date: Dec 11, 2025 if ordered today

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Rebuild Kit, Complete Bottom End, for use on Honda®, CRF250R, Kit

Part Number: HRI-CBK0119

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Estimated Ship Date: Dec 11, 2025 if ordered today

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Gasket Kit COMPLETE BOTTOM END KIT COMPLETE BOTTOM END KIT

Part Number: HRI-CBK0182

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Estimated Ship Date: Dec 11, 2025 if ordered today

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BOTTOM END KIT Honda

Part Number: HRI-CBK0042

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Estimated Ship Date: Dec 12, 2025 if ordered today

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Piston, TOP END REPAIR KIT

Part Number: NTI-NX-20000-BK

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Estimated Ship Date: Dec 22, 2025 if ordered today

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Repair Kit, Top End, 40.000mm Bore, 6.00 to 1 Compression Ratio, Yamaha, Kit

Part Number: NTI-NX-40005K

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Estimated Ship Date: Dec 22, 2025 if ordered today

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BOTTOM END KIT

Part Number: HRI-CBK0052

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Estimated Ship Date: Dec 11, 2025 if ordered today

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