Engines & Components
Availability
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...
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 daily driver.
Estimated Ship Date: Today
80 SHOVELHEAD REAR CYLINDER
Part Number: HDD-820-51555
Not Yet Reviewed
Estimated Ship Date: Jun 9, 2025 if ordered today
Estimated Ship Date: Jun 9, 2025 if ordered today
Crankcase Breather, Steel, Chrome, Each
Part Number: HDD-820-51578
Not Yet Reviewed
Estimated Ship Date: Jun 9, 2025 if ordered today
Estimated Ship Date: Jun 9, 2025 if ordered today
80 SHOVELHEAD FRONT CYLINDER
Part Number: HDD-820-51554
Not Yet Reviewed
Estimated Ship Date: Jun 9, 2025 if ordered today
Estimated Ship Date: Jun 9, 2025 if ordered today
Crankcase Breather, Dual Breather Filter, Steel, Chrome, Each
Part Number: HDD-820-51580
Not Yet Reviewed
Estimated Ship Date: Jun 9, 2025 if ordered today
Estimated Ship Date: Jun 9, 2025 if ordered today
Cam Chain Guide, Slack Side Position, Plastic, Black, Harley-Davidson®, Each
Part Number: HDD-820-51402
Not Yet Reviewed
Estimated Ship Date: Jun 9, 2025 if ordered today
Estimated Ship Date: Jun 9, 2025 if ordered today
Chain Tensioner, CAM CHAIN TENSIONERS SET TWIN
Part Number: HDD-820-51404
Not Yet Reviewed
Estimated Ship Date: Jun 9, 2025 if ordered today
Estimated Ship Date: Jun 9, 2025 if ordered today
Chain Tensioner, CAM CHAIN TENSIONERS SHOE SET
Part Number: HDD-820-51405
Not Yet Reviewed
Estimated Ship Date: Jun 9, 2025 if ordered today
Estimated Ship Date: Jun 9, 2025 if ordered today
D-RINGS CHROME
Part Number: HDD-820-51574
Not Yet Reviewed
Estimated Ship Date: Jun 9, 2025 if ordered today
Estimated Ship Date: Jun 9, 2025 if ordered today
Cylinder Head, BIG BORE CYLINDER M8 124/128CI
Part Number: HDD-820-51548
Not Yet Reviewed
Estimated Ship Date: Jun 9, 2025 if ordered today
Estimated Ship Date: Jun 9, 2025 if ordered today
Cylinder Head, TC 88/96 3.75" STD BRE CYLINDR
Part Number: HDD-820-51549
Not Yet Reviewed
Estimated Ship Date: Jun 9, 2025 if ordered today
Estimated Ship Date: Jun 9, 2025 if ordered today
ROCKER BOX KIT CHROME
Part Number: HDD-820-51570
Not Yet Reviewed
Estimated Ship Date: Jun 9, 2025 if ordered today
Estimated Ship Date: Jun 9, 2025 if ordered today
Rocker Boxes, Die-cast Aluminum, Chrome, Harley-Davidson®, Pair
Part Number: HDD-820-51571
Not Yet Reviewed
Estimated Ship Date: Jun 9, 2025 if ordered today
Estimated Ship Date: Jun 9, 2025 if ordered today
Cam Cover, One-piece, Aluminum, Chrome, Harley-Davidson®, Each
Part Number: HDD-820-51581
Not Yet Reviewed
Estimated Ship Date: Jun 9, 2025 if ordered today
Estimated Ship Date: Jun 9, 2025 if ordered today
Mitsubishi 4B11T DS 3.4055B/3.3858S/5.65
Part Number: DPP-82051
Not Yet Reviewed
Estimated Ship Date: Jun 17, 2025 if ordered today
Estimated Ship Date: Jun 17, 2025 if ordered today
Sport Compact Series - 1200HP Rated - 2618 Material - Coated Skirts - Includes Pins and Rings
Part Number: DPP-82051-4
Not Yet Reviewed
Estimated Ship Date: Jul 1, 2025 if ordered today
Estimated Ship Date: Jul 1, 2025 if ordered today
4B11T 86.5mmB/1.305CD/Kit
Part Number: DPP-82051-4-H
Not Yet Reviewed
Estimated Ship Date: Jun 17, 2025 if ordered today
Estimated Ship Date: Jun 17, 2025 if ordered today
TC103 CYLINDER 3.875" BORE BLACK W/MACHINED FINS EA
Part Number: HDD-820-51547
Not Yet Reviewed
Estimated Ship Date: Tomorrow if ordered today
Estimated Ship Date: Tomorrow if ordered today
Cylinder, Front, 3.498 in. Bore, Stock Length, Aluminum, Natural, Cast Iron Liner, Harley-Davidson®, Each
Part Number: HDD-820-51558
Not Yet Reviewed
Estimated Ship Date: May 29, 2025 if ordered today
Estimated Ship Date: May 29, 2025 if ordered today
ROCKER BOX COVER CHROME
Part Number: HDD-820-51572
Not Yet Reviewed
Estimated Ship Date: May 29, 2025 if ordered today
Estimated Ship Date: May 29, 2025 if ordered today
ROCKER COVER KIT CHROME
Part Number: HDD-820-51573
Not Yet Reviewed
Estimated Ship Date: May 29, 2025 if ordered today
Estimated Ship Date: May 29, 2025 if ordered today
Cam Cover, One-piece, Aluminum, Chrome, Harley-Davidson®, Each
Part Number: HDD-820-51582
Not Yet Reviewed
Estimated Ship Date: May 29, 2025 if ordered today
Estimated Ship Date: May 29, 2025 if ordered today
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