Engine Rotating Assemblies & Rebuild Kits

Pro LS 4340 Piston and Rod Kit, 415 Cid., 4.065 bore, 4.000 stroke, 6.125 rod, 21cc dish, 9.9:1 @ 65cc, 9.5:1 @ 70cc, File-Fit Rings

Part Number: SUM-PR4006521

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Pro LS 4340 Piston and Rod Kit, 416 Cid., 4.070 bore, 4.000 stroke, 6.125 rod, 21cc dish, 9.9:1 @ 65cc, 9.5:1 @ 70cc, File-Fit Rings

Part Number: SUM-PR4007021

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Pro LS 4340 Piston and Rod Kit, 364 Cid., 3.810 bore, 4.000 stroke, 6.125 rod, 12cc dish, 10:2 @ 61cc, 9.7:1 @ 65cc, File-Fit Rings

Part Number: SUM-PR4081012

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Pro LS 4340 Piston and Rod Kit, 364 Cid., 3.810 bore, 4.000 stroke, 6.125 rod, 5cc dish, 11:1 @ 61cc, 10.5:1 @ 65cc, File-Fit Rings

Part Number: SUM-PR408105

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Pro LS 4340 Piston and Rod Kit, 367 Cid., 3.820 bore, 4.000 stroke, 6.125 rod, 12cc dish, 10:2 @ 61cc, 9.8:1 @ 65cc, File-Fit Rings

Part Number: SUM-PR4082012

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Pro LS 4340 Piston and Rod Kit, 367 Cid., 3.820 bore, 4.000 stroke, 6.125 rod, 5cc dish, 11:1 @ 61cc, 10.5:1 @ 65cc, File-Fit Rings

Part Number: SUM-PR408205

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Engine Rebuild, Cast Dish, 4.000 in. Bore, Standard Rod, Standard Main, Ford 1983-87, 351W, Kit

Part Number: FEM-EMKP261A-000

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Engine Rebuild, Cast Dish, 4.000 in. Bore, Standard Rod, Standard Main, Ford 1984-85, 351W, Kit

Part Number: FEM-EMKP261D-000

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Engine Rebuild, Cast Dish, 4 in. Bore, Standard Rod, Standard Main, Ford, 351W, Kit

Part Number: FEM-MKP261A-000

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Engine Rebuild, Cast Dish, 4 in. Bore, .010 in. Rod, .010 in. Main, Ford, 351W, Kit

Part Number: FEM-MKP6116A-011

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Engine Kit, Start Up, Crate Engine, GM, V8, SBC, Kit

Part Number: SUM-CSUMGMINS01

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BOTTOM END KIT Polaris

Part Number: HRI-HR00107

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Estimated Ship Date: Nov 12, 2025 if ordered today

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BOTTOM END KIT Polaris

Part Number: HRI-HR00118

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Estimated Ship Date: Nov 12, 2025 if ordered today

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BOTTOM END KIT Yamaha

Part Number: HRI-HR00124

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Estimated Ship Date: Nov 12, 2025 if ordered today

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Cylinder Kit, Forged Piston, Standard Bore, for use on Honda®, 10.50 to 1 Compression Ratio, Kit

Part Number: CLW-10003-K01

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Estimated Ship Date: Nov 24, 2025 if ordered today

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Cylinder Kit, Forged Aluminum, Standard Bore, for use on Honda®, Set

Part Number: CLW-10005-K01

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Estimated Ship Date: Nov 24, 2025 if ordered today

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Cylinder Kit, Forged Aluminum, Standard Bore, Kawasaki, KX250F, Set

Part Number: CLW-30006-K01

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Estimated Ship Date: Nov 24, 2025 if ordered today

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STANDARD BORE CYLINDER KIT

Part Number: CLW-30006-K02

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Estimated Ship Date: Nov 24, 2025 if ordered today

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STANDARD BORE CYLINDER KIT

Part Number: CLW-30011-K03

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Estimated Ship Date: Nov 24, 2025 if ordered today

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Cylinder Kit, Aluminum, 45.00mm Bore, KTM, Set

Part Number: CLW-50005

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Estimated Ship Date: Nov 24, 2025 if ordered today

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Rebuild Kit, Complete Bottom End, Yamaha, YFZ450, Kit

Part Number: HRI-CBK0098

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Estimated Ship Date: Nov 12, 2025 if ordered today

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Rebuild Kit, Complete Bottom End, Suzuki, RM85, Kit

Part Number: HRI-CBK0103

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Estimated Ship Date: Nov 12, 2025 if ordered today

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Rebuild Kit, Complete Bottom End, Yamaha, YFZ450, Kit

Part Number: HRI-CBK0109

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Estimated Ship Date: Nov 12, 2025 if ordered today

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COMPLETE BOTTOM END KIT

Part Number: HRI-CBK0145

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Estimated Ship Date: Nov 12, 2025 if ordered today

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Gasket Kit BOTTOM END KIT BOTTOM END KIT

Part Number: HRI-CBK0186

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Estimated Ship Date: Nov 12, 2025 if ordered today

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