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Lower End

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Lower End

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.

Lock Screws for Right Bearing Races

Lock Screws for Right Bearing Races

Lock screws which are used to secure the right side crankcase bearing race.

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.

Crankcase Bearing Races Right

Crankcase Bearing Races Right

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.

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.

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.

As late as 1999 HD used flywheel constructions with conical crank pins with their respective nuts. For tightening these nuts with correct torque please refer to the factory manual.

The Cyclery Pinion Gears Big Twin Flatheads 1930-1936

The Cyclery Pinion Gears Big Twin Flatheads 1930-1936

Sprocket Shafts

Sprocket Shafts

Flywheel Shaft Nuts

Flywheel Shaft Nuts

Stock replacement flywheel shaft nuts. For tightening these nuts with the correct torque please refer to factory manuals.

Woodruff Keys for Flywheels

Woodruff Keys for Flywheels

As late as 1999 HD used flywheel constructions with conical shafts. The keys lock the shafts in their position.

Locking Plates for Flywheels

Locking Plates for Flywheels

Connecting Rod Bearing Races

Connecting Rod Bearing Races

Complete connecting rod bearing races. Sets consist of one inner and two outer bearing races.

Piston Pin Bushings

Piston Pin Bushings

Gear Case Parts for IOE Models

Gear Case Parts for IOE Models

Oil Pump Window 1915-1927

Oil Pump Window 1915-1927

Replacement ring nut and sight glass (oil window) with gaskets for all ioe models 1915-1927.

Oil Pump Lock Nuts 1922-1934

Oil Pump Lock Nuts 1922-1934

Stock replacement ring nut to fasten the oil pump body to the gear cover. A special socket tool for tightening/loosening is also available.

Hardware Kits for Oil Pumps 1915-1922

Hardware Kits for Oil Pumps 1915-1922

The Cyclery Cam Shaft IOE 1917-29

The Cyclery Cam Shaft IOE 1917-29

Accurate, high quality reproduction of the four-lobe cam gear as used by the factory on IOE-Twins.

The Cyclery Paul Weyres Racing Cams IOE 1917-1929

The Cyclery Paul Weyres Racing Cams IOE 1917-1929

Your old IOE machine will benefit from a performance cam, too, especially when combined with a later style 1-1/4” or 1-1/2” Linkert carburetor. Higher lift lobes and longer duration will improve breathing and easily free some extra ponies. The W&W Wrecking Crew tested this cam shaft in a 1929 JDL and the results were highly satisfying, with overall performance nicely improved on both public roads and occasional race track missions. Excellent European made quality.

The Cyclery Cams for V Models

The Cyclery Cams for V Models

These stock replacement cams for Big Twin Flatheads of the V series are similar to original parts but the lobes have been redsigned using modern computer cam design and smoothing techniques.

The Cyclery Racing Cams for V Models

The Cyclery Racing Cams for V Models

If you plan to build a real Hot Rod out of your V series Big Twin Flathead, we have the cams for you. These 4 bad babies feature cam lobes profiled after those legendary KHK models from 1956 and spell horsepower. However, all lobes have been redsigned using modern computer cam design and smoothing techniques. Of course these are not drop-in parts but require an experienced mechanic, who checks and establishes all necessary tolerances, like lifter clearance, case clearance and valve to head clearance. The set comprises 4 cams, generator idler gear and the pinion gear.

Guide Bushings for Intake Lifter Pins 1917-1929

Guide Bushings for Intake Lifter Pins 1917-1929

Intake Pushrod Lifter Pins 1914-1929

Intake Pushrod Lifter Pins 1914-1929

Exhaust Lifter Bushings 1914-1929

Exhaust Lifter Bushings 1914-1929

Exhaust Lifter Pins →1929

Exhaust Lifter Pins →1929

Lifters are +.002 oversize to work with worn stock bushings.

Valve Lifter Arm Rebuild Kit 1917-1929

Valve Lifter Arm Rebuild Kit 1917-1929

Complete roller rebuild kit for the intake and exhaust lifter arms. Fits 1917-29 Twins all models. The heat-treated kit also includes a pin removal tool.

Plate Kit 1919-1929

Plate Kit 1919-1929

Parkerized hardware to mount engine into frame. This plate kit consists of two serrated steel plates.

Nuts for Crankcases: all Models 1911-1934

Nuts for Crankcases: all Models 1911-1934

Bolt Kits for Engine Cases: 1000cc IOE 1924-1929

Bolt Kits for Engine Cases: 1000cc IOE 1924-1929

Bolt Kits for Engine Cases: 1200cc IOE 1921-1929

Bolt Kits for Engine Cases: 1200cc IOE 1921-1929

Screw Kits for Cam Cover: Single and Twins 1911-1929

Screw Kits for Cam Cover: Single and Twins 1911-1929

Complete, nickel-plated screw kit to mount the gear case to the crankcase and to fasten the outer cover to the gear case.

Drain Plugs for Crankcases 1911-1929

Drain Plugs for Crankcases 1911-1929

Reproduction of the stock engine case drain plug with period correct high hex head.

Drain Plugs for Crankcases and Transmission 1930-1957

Drain Plugs for Crankcases and Transmission 1930-1957

PanAm Crankcase Drain Valve

PanAm Crankcase Drain Valve

Prevent stripped drain plug threads of your valuable aluminum cases with this smart drain valve. Perfect for running-in periods when you have to check oil level often and absolutely safe operation with its locking lever. The outlet elbow position is fully adjustable. Fits all models 1910→ with single loop frames and stock 3/8”-24 drain plug.

Crankcase Alignment Studs for Models 1911-1929

Crankcase Alignment Studs for Models 1911-1929

Accurate reproductions of the special crankcase alignment studs.

Studs for Cylinder Base

Studs for Cylinder Base

The Cyclery Oiler Covers 1928-1929

The Cyclery Oiler Covers 1928-1929

Reproductions of oiler covers to replace your worn or missing stock part. Introduced by the factory for late 1928 IOE engines to protect the oil control.

The Cyclery Oiler Covers 1930-1936 Side Valves

The Cyclery Oiler Covers 1930-1936 Side Valves

Reproductions of oiler and oil pump covers to replace your worn or missing stock part.

Breather Tube and Nipple for IOE Models

Breather Tube and Nipple for IOE Models

Crank case breather tube and fittings for IOE models.

Relief Tube Nipple for Singles 1926-1934 and D-Models

Relief Tube Nipple for Singles 1926-1934 and D-Models

Relief Tube for V-Models 1934-1936

Relief Tube for V-Models 1934-1936

Crank case and gear case breather tube with fitting. Mounts to the gear cover and fits V-models 1934-1936.

Have any questions?

Our service team will be glad to help out: Mondays - Thursdays 08:00-17:00 CET, Fridays 08:00-16:00 CET, Phone: +49 / 931 250 61 16, eMail: service@wwag.com