$25 Off $250 / $50 Off $500, on Summit Racing Brand Products - Use Promo Code: BUILDIT

$25 Off $250 / $50 Off $500, on Summit Racing Brand Products - Use Promo Code: BUILDIT

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Engine Kits & Rotating Assemblies

Individual Parts

Results 101 - 125 of 140

Pro LS 4340 Piston and Rod Kit, 402 Cid., 4.000 bore, 4.000 stroke, 6.125 rod, 20cc dish, 9.7:1 @ 65cc, 9.3:1 @ 70cc, File-Fit Rings

Part Number: SUM-PR4000020

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Pro LS 4340 Piston and Rod Kit, 408 Cid., 4.030 bore, 4.000 stroke, 6.125 rod, 8cc dish, 11.1:1 @ 65cc, 10.6:1 @ 70cc, File-Fit Rings

Part Number: SUM-PR400308

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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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HD OVERHAUL KIT

Part Number: CLE-4861004STD

Not Yet Reviewed

Estimated Ship Date: Nov 14, 2025 if ordered today

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Estimated Ship Date: Nov 14, 2025 if ordered today

BOTTOM END KIT Polaris

Part Number: HRI-HR00107

Not Yet Reviewed

Estimated Ship Date: Oct 14, 2025 if ordered today

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Estimated Ship Date: Oct 14, 2025 if ordered today

BOTTOM END KIT Polaris

Part Number: HRI-HR00111

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Estimated Ship Date: Oct 14, 2025 if ordered today

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Estimated Ship Date: Oct 14, 2025 if ordered today

BOTTOM END KIT Polaris

Part Number: HRI-HR00118

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Estimated Ship Date: Oct 14, 2025 if ordered today

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Estimated Ship Date: Oct 14, 2025 if ordered today

BOTTOM END KIT Polaris

Part Number: HRI-HR00123

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Estimated Ship Date: Oct 14, 2025 if ordered today

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Estimated Ship Date: Oct 14, 2025 if ordered today

Complete Engine Rebuild Kit, Stock Bore, Stock Stroke, 12.80 to 1 Compression, KTM, Kit

Part Number: VPX-WR00030

Not Yet Reviewed

Estimated Ship Date: Oct 23, 2025 if ordered today

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Estimated Ship Date: Oct 23, 2025 if ordered today

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

Part Number: VPX-WR101-077

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Estimated Ship Date: Oct 23, 2025 if ordered today

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Estimated Ship Date: Oct 23, 2025 if ordered today

VERTEX COMPLETE ENGINE REBUILD KIT

Part Number: VPX-WR101-141

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Estimated Ship Date: Oct 23, 2025 if ordered today

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Estimated Ship Date: Oct 23, 2025 if ordered today

Complete Engine Rebuild Kit, Stock Bore, Stock Stroke, 12.80 to 1 Compression, KTM, Kit

Part Number: VPX-WR101-162

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Estimated Ship Date: Oct 23, 2025 if ordered today

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Estimated Ship Date: Oct 23, 2025 if ordered today

Complete Engine Rebuild Kit, Stock Bore, Stock Stroke, 8.80 to 1 Compression, Kawasaki, Kit

Part Number: VPX-WR101-164

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Estimated Ship Date: Oct 23, 2025 if ordered today

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Estimated Ship Date: Oct 23, 2025 if ordered today

Complete Engine Rebuild Kit, 0.50mm Over Bore, Stock Stroke, 9.10 to 1 Compression, Yamaha, Kit

Part Number: VPX-WR101-211

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Estimated Ship Date: Oct 23, 2025 if ordered today

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Estimated Ship Date: Oct 23, 2025 if ordered today

Complete Engine Rebuild Kit, Stock Bore, Stock Stroke, 10.20 to 1 Compression, Polaris, Kit

Part Number: VPX-WR00063

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Estimated Ship Date: Oct 23, 2025 if ordered today

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Estimated Ship Date: Oct 23, 2025 if ordered today

Top End Engine Kits CYL WORKS BIG BORE KIT POLARIS CYL WORKS BIG BORE KIT POLARIS RZR 800

Part Number: CLW-61002-K01

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Estimated Ship Date: Oct 27, 2025 if ordered today

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Estimated Ship Date: Oct 27, 2025 if ordered today

PERFORMANCE, 131" KIT - BLACK FINS M8

Part Number: SSY-910-0763

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Estimated Ship Date: Oct 24, 2025 if ordered today

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Estimated Ship Date: Oct 24, 2025 if ordered today

S&S Cycle 84-99 BT 96in 3-5/8in Big Bore Cylinder & Piston Kit For S&S SH96 Engines - Natural

Part Number: SSY-91-7207

Not Yet Reviewed

Estimated Ship Date: Oct 23, 2025 if ordered today

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Estimated Ship Date: Oct 23, 2025 if ordered today

HD IN-FRAME KIT, STD

Part Number: CLE-4595021STD

Not Yet Reviewed

Estimated Ship Date: Nov 14, 2025 if ordered today

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Estimated Ship Date: Nov 14, 2025 if ordered today

Gasket Kit BOTTOM END KIT BOTTOM END KIT

Part Number: HRI-CBK0178

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Estimated Ship Date: Oct 16, 2025 if ordered today

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Estimated Ship Date: Oct 16, 2025 if ordered today

BOTTOM END KIT Polaris

Part Number: HRI-HR00116

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Estimated Ship Date: Oct 16, 2025 if ordered today

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Estimated Ship Date: Oct 16, 2025 if ordered today

BOTTOM END KIT Polaris

Part Number: HRI-HR00122

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Estimated Ship Date: Oct 16, 2025 if ordered today

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Estimated Ship Date: Oct 16, 2025 if ordered today

Top End Engine Kit, M8 124 in. Big Bore, Wrinkle Black Finish with Highlighted Fins, 4.250 in., Forged Piston, Harley-Davidson®, Kit

Part Number: SSY-910-0625

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Estimated Ship Date: Oct 23, 2025 if ordered today

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Estimated Ship Date: Oct 23, 2025 if ordered today

Complete Engine Rebuild Kit, Stock Bore, Stock Stroke, 8.80 to 1 Compression, Kawasaki, Kit

Part Number: VPX-WR101-165

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Estimated Ship Date: Oct 27, 2025 if ordered today

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Estimated Ship Date: Oct 27, 2025 if ordered today

VERTEX COMPLETE ENGINE REBUILD KIT

Part Number: VPX-WR101-166

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Estimated Ship Date: Oct 27, 2025 if ordered today

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Estimated Ship Date: Oct 27, 2025 if ordered today

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