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Main Bearings

Main Bearings

Lock Screws for Left Bearing Races
Lock Screws for Left Bearing Races
Set of three lock screws which are used to secure the left side crankcase bearing race.
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Crankcase Bearing Races Left
Crankcase Bearing Races Left
Until 1954 the left side bearing races of HD crankcases could be exchanged. The selection below includes races for most common models, including oversize races for worn crankcases.
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Crankcase Bearing Races Right
Crankcase Bearing Races Right
Until 1999 the right side bearing races of HD crankcases could be exchanged.
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The Cyclery Crankcase and Crankpin Roller Cages - Big Twins 1915-1936
The Cyclery Crankcase and Crankpin Roller Cages - Big Twins 1915-1936
Reproductions of OEM  bearing retainers for crankpins of all Twins 1915-1936 and sprocket shafts of Twins from 1917-1929.
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Crankcase Roller Bearing Collars - Big Twins 1925-1936
Crankcase Roller Bearing Collars - Big Twins 1925-1936
Replacement collar which installs between the two left side roller bearings of your crankshaft.
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Crankcase Roller Bearings - Big Twins 1936-1954
Crankcase Roller Bearings - Big Twins 1936-1954
Reproductions of OEM  bearing retainers, thrust washers and spacers for all Big Twins 1936-1954.
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Crankcase Roller Bearings - 45”/750cc Flatheads
Crankcase Roller Bearings - 45”/750cc Flatheads
Bearing retainers and corresponding small parts for the crankshaft bearings of all 45”/750cc Sidevalves 1929-73, except K-models.
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Tapered Sprocket Shaft Roller Bearings: Sportster
Tapered Sprocket Shaft Roller Bearings: Sportster
Quality bearings for the sprocket shafts.
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Tapered Sprocket Shaft Roller Bearings: Big Twins
Tapered Sprocket Shaft Roller Bearings: Big Twins
Quality bearings for the sprocket shafts.
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Pinion Shaft Roller Bearings: Big Twin 1954-1957
Pinion Shaft Roller Bearings: Big Twin 1954-1957
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Pinion Shaft Roller Bearings: Big Twin 1958-1986
Pinion Shaft Roller Bearings: Big Twin 1958-1986
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Flywheel Thrust Washer Set
Flywheel Thrust Washer Set
Complete sets with different sizes. Used to establish the correct side play of your flywheel assembly in the crankcases.
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Individual Rollers for Main Bearings
Individual Rollers for Main Bearings
Until 1986, HD used quite a few bearings of the loose roller type in their engines and transmissions. We offer a complete selection of top-quality bearing rollers for this type of bearing.
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Pinion Shaft Roller Bearings: Big Twin 1987-1999
Pinion Shaft Roller Bearings: Big Twin 1987-1999
Pre-fabricated roller bearings. Choose bearing size according to service manual procedure.
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Crankcase Roller Bearings: Big Twin 1999→
Crankcase Roller Bearings: Big Twin 1999→
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Pinion Shaft Roller Bearings: K/XL 1954-1977 and Big Twin 1954-1957
Pinion Shaft Roller Bearings: K/XL 1954-1977 and Big Twin 1954-1957
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Snap Rings for Engine Main Bearings
Snap Rings for Engine Main Bearings
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Pinion Shaft Roller Bearings: Sportster 1987-2020
Pinion Shaft Roller Bearings: Sportster 1987-2020
Pre-fabricated roller bearings. Choose bearing size according to service manual procedure.
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Pinion Shaft Needle Bearings: Sportster
Pinion Shaft Needle Bearings: Sportster
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Adjusting Spacers for Tapered Sprocket Shaft Bearings
Adjusting Spacers for Tapered Sprocket Shaft Bearings
Selection of adjusting spacers for the left side tapered roller bearing which you need when sprocket shaft end play is not within specs.
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