Engines & Engine Parts

Welcome to your headquarters for horsepower—the place to get everything you need to build real power and performance! We’ve got competition-proven crate engines, performance-matched...

Welcome to your headquarters for horsepower—the place to get everything you need to build real power and performance! We’ve got competition-proven crate engines, performance-matched top end kits, and complete rotating assemblies from the biggest names in the industry. You can add a set of high-flow cylinder heads to your powerplant, upgrade your valvetrain, improve your oiling system, or drop in a new set of pistons. We also have a complete selection of crankshafts, connecting rods, harmonic balancers, pulleys, and engine brackets. We even have everything you need to restore the horsepower that time has stolen from your...

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Summit Racing™ Top End Engine Kits for Small Chevy SME-K-415-405

Summit Racing™ Top End Engine Kits for Small Chevy SME-K-415-405

Combo, Aluminum, Cylinder Heads, Manifold, Cam/Lifters 528/539, Gaskets, Bolts, SB Chevy

Part Number: SME-K-415-405

4.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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Summit Racing™ Top End Pro Packs 08-0037

Combo, Cylinder Heads, Aluminum, Intake Manifold, Aluminum, Edelbrock, Cam/Lifters, Gaskets, Bolts, Kit

Part Number: CMB-08-0037

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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Trick Flow® PowerPort® Top-End Engine Kits for Big Block Mopar 440 TFS-K616-620-576

Top-End Combo, PowerPort®, Heads, Track Heat® Intake, Track Max® Camshaft, Big Block Mopar, Chrysler 440, Kit

Part Number: TFS-K616-620-576

Not Yet Reviewed

Estimated Ship Date: Today

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Chevrolet Performance Vortec Top End Kits 12558060

TOP END KIT

Part Number: NAL-12558060K1

Not Yet Reviewed

Estimated Ship Date: Today

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Trick Flow® 455 HP GenX® Top-End Engine Kits for GM LS Truck TFS-K305-455-425

Head Combo, GenX® Top-End, 455 hp/426 ft.-lbs. Torque, Chevy, 5.3L, Kit

Part Number: TFS-K305-455-425

4.5 out of 5 stars ( 4 )

Estimated Ship Date: Today

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Hot Rods Complete Bottom End Rebuild Kits for 2014-2021 YFZ450R, YFZ450R SE - HR00124

BOTTOM END KIT Yamaha

Part Number: HRI-HR00124

Not Yet Reviewed

Estimated Ship Date: May 6, 2026 if ordered today

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Estimated Ship Date: May 6, 2026 if ordered today

Hot Rods Complete Bottom End Rebuild Kits for 1992-2002 CR80R, 1996-2002 CR80RB EXPERT - CBK0001

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

Part Number: HRI-CBK0001

Not Yet Reviewed

Estimated Ship Date: May 6, 2026 if ordered today

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Estimated Ship Date: May 6, 2026 if ordered today

Hot Rods Complete Bottom End Rebuild Kits for 2012-2013 TRX420FM FOURTRAX RANCHER 4X4, TRX420FPM RANCHER 4X4 W/ POWER STEERING, TRX420TM FOURTRAX RANCHER - CBK0219

Powersports Bottom End Engine Kit, HOT ROD COMPLETE BOTTOM END KT TRX420FM / TM

Part Number: HRI-CBK0219

Not Yet Reviewed

Estimated Ship Date: May 8, 2026 if ordered today

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Estimated Ship Date: May 8, 2026 if ordered today

Hot Rods Complete Bottom End Rebuild Kits for 2005-2008 TRX400EX SPORTRAX, 2009-2014 TRX400X - CBK0016

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

Part Number: HRI-CBK0016

Not Yet Reviewed

Estimated Ship Date: May 7, 2026 if ordered today

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Estimated Ship Date: May 7, 2026 if ordered today

Trick Flow® 550 HP GenX® Top-End Engine Kits for GM LS2 TFS-K306-550-470

Head Combo, GenX® Top-End, Chevy, Small Block, LS2, Kit

Part Number: TFS-K306-550-470

3.33 out of 5 stars ( 3 )

Estimated Ship Date: Today

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Hot Rods Complete Bottom End Rebuild Kits CBK0106

Rebuild Kit, Complete Bottom End, for use on Honda®, TRX450R, TRX450ER, Kit

Part Number: HRI-CBK0106

Not Yet Reviewed

Estimated Ship Date: May 6, 2026 if ordered today

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Estimated Ship Date: May 6, 2026 if ordered today

Hot Rods Complete Bottom End Rebuild Kits for 1987-2006 YFZ350 BANSHEE - CBK0039

Rebuild Kit, Complete Bottom End, Yamaha, YFZ 350 Banshee, Kit

Part Number: HRI-CBK0039

Not Yet Reviewed

Estimated Ship Date: May 6, 2026 if ordered today

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Estimated Ship Date: May 6, 2026 if ordered today

Hot Rods Complete Bottom End Rebuild Kits CBK0115

Rebuild Kit, Complete Bottom End, Yamaha, YFM700, YXR700F, Kit

Part Number: HRI-CBK0115

5.0 out of 5 stars ( 1 )

Estimated Ship Date: May 6, 2026 if ordered today

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Estimated Ship Date: May 6, 2026 if ordered today

Cylinder Works Big Bore Cylinder Kits for 2004-2005 TRX450R - 422-11003K

Big Bore Cylinder Kit, Forged Piston, 97mm Bore, for use on Honda®, ATV, Kit

Part Number: CLW-11003-K01

Not Yet Reviewed

Estimated Ship Date: May 18, 2026 if ordered today

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Estimated Ship Date: May 18, 2026 if ordered today

Hot Rods Complete Bottom End Rebuild Kits for 2013-2016 CRF450R - CBK0191

COMPLETE BOTTOM END KT

Part Number: HRI-CBK0191

Not Yet Reviewed

Estimated Ship Date: May 7, 2026 if ordered today

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Estimated Ship Date: May 7, 2026 if ordered today

Hot Rods Complete Bottom End Rebuild Kits CBK0073

Rebuild Kit, Complete Bottom End, KTM, 65 SX, 65 XC, Kit

Part Number: HRI-CBK0073

Not Yet Reviewed

Estimated Ship Date: May 7, 2026 if ordered today

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Estimated Ship Date: May 7, 2026 if ordered today

Hot Rods Complete Bottom End Rebuild Kits for 2013 85 SXS, 85 SX (19/16), 2013-2016 85 SX (17/14) - CBK0187

COMPLETE BOTTOM END KIT

Part Number: HRI-CBK0187

Not Yet Reviewed

Estimated Ship Date: May 7, 2026 if ordered today

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Estimated Ship Date: May 7, 2026 if ordered today

Edelbrock Total Power Package 451 HP 409 W Big Block Chevy Top-End Engine Kits 2039

Top End Engine Kit, Power Package, Intake, Heads, Cam, Timing Chain, Head Bolts, 409W BBC, 451 HP-474 TQ, Kit

Part Number: EDL-2039

Not Yet Reviewed

Estimated Ship Date: Today

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Hot Rods Complete Bottom End Rebuild Kits for 2007-2016 CRF150R, CRF150R EXPERT - CBK0111

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

Part Number: HRI-CBK0111

Not Yet Reviewed

Estimated Ship Date: May 7, 2026 if ordered today

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Estimated Ship Date: May 7, 2026 if ordered today

Hot Rods Complete Bottom End Rebuild Kits CBK0223

Rebuild Kit, Complete Bottom End, Yamaha, Kit

Part Number: HRI-CBK0223

Not Yet Reviewed

Estimated Ship Date: May 7, 2026 if ordered today

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Estimated Ship Date: May 7, 2026 if ordered today

Hot Rods Complete Bottom End Rebuild Kits for 2000 CR125R - CBK0023

BOTTOM END KIT Honda

Part Number: HRI-CBK0023

Not Yet Reviewed

Estimated Ship Date: May 6, 2026 if ordered today

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Estimated Ship Date: May 6, 2026 if ordered today

Hot Rods Complete Bottom End Rebuild Kits for 1985-1986 ATC250R, 1986 TRX250R - CBK0042

BOTTOM END KIT Honda

Part Number: HRI-CBK0042

Not Yet Reviewed

Estimated Ship Date: May 7, 2026 if ordered today

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Estimated Ship Date: May 7, 2026 if ordered today

Hot Rods Complete Bottom End Rebuild Kits for 2007-2008 144 SX, 2009-2014 150 SX, 2010-2014 150 XC - CBK0063

Rebuild Kit, Complete Bottom End, KTM, 144 SX, 150 SX, 150 XC, Kit

Part Number: HRI-CBK0063

Not Yet Reviewed

Estimated Ship Date: May 7, 2026 if ordered today

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Estimated Ship Date: May 7, 2026 if ordered today

Hot Rods Complete Bottom End Rebuild Kits for 2023 125 SX, TC125, TC125 HERITAGE - HR00235

BOTTOM END KIT

Part Number: HRI-HR00235

Not Yet Reviewed

Estimated Ship Date: May 7, 2026 if ordered today

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Estimated Ship Date: May 7, 2026 if ordered today

Hot Rods Complete Bottom End Rebuild Kits HR00116

BOTTOM END KIT Polaris

Part Number: HRI-HR00116

Not Yet Reviewed

Estimated Ship Date: May 7, 2026 if ordered today

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Estimated Ship Date: May 7, 2026 if ordered today

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