1942 Harley-Davidson Big Twin Flathead

Sale price: $10210 ≈ €9221 ≈ £7772 ≈ ₿1.36 bitcoin

Last update:
Item location: Moss Beach, California, United States, US
Sale type: Fixed price listing

Brand: Harley-Davidson
Model: Big Twin Flathead
Year: 1942
Condition: used
Color: black
Mileage: 66041
Engine: 1200
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1942 UL Big Twin Side Valve by Harley Davidson

This is the rebirth of a rare WWII vintage Harley Davidson. This beauty is rebuilt, it is not an AMCA restoration. Harley only built 405 of these 1942 High Compression Big Twin Flatheads.

This side valve has zero miles on the rebuilt top end.


-Top end assembled by seller to factory specs. Bottom end within Harley specs. Connecting

Rod Piston Pin Bushings replaced and reamed to factory specified size/fit.

-.060 pistons, rings, valves and guides from Eastern Motorcycle Parts.

-Motor has original High Compression Harley Factory Aluminum Heads.

-Machine work performed by Hannen's Machine Shop, Hayward, CA.

-Motor cases have original factory numbers – 42UL15XX on the boss.

-M51 Carb with Rubber Ducky Float, Peak Manifold Seals and 1970's vintage Superior Air


-Original Speedometer.

-Restoration Quality Bruce Lindsay Cloth Wiring Harness.

-Colony Fasteners .

-New chains and sprockets were used throughout.

-Exhaust pipes by Dennis Corso.

-Muffler is 1970's Superior.

-The gas tanks are NOS Big Twin Flathead.

-Original HD Tailight and Plate bracket.

-Paint by Bobby Keith, Cycle Finish, Menlo Park, CA.

-Corbin Gentry period correct leather buddy seat.

-Twin Leading Shoe Front Brake Conversion for better stopping of this hack rig.

I have owned this 1942 UL since 1972. It was a roller in need of TLC when I purchased it. I rebuilt it and rode it solo and then added a 1944 sidecar in 1977. I put this motorcycle into storage in 1979 and left it there until several years ago. I then tore it completely apart and rebuilt it. It got a new top end including pistons, valves and guides. The gas tanks were replaced with a great set of NOS UL tanks that I had found. The tanks and fenders were painted black.

The VIN is original & untouched. The gearbox is 3 speed with reverse.

I can no longer kick start a bike because both of my hips have been replaced so I installed a Russ Peterson Right Side Electric Starter Conversion. Amazing, it allowed an old man to easily start this big twin.

This is a 12v electric system with Shorai Li Battery, 12v generator and Solid State Regulator in original looking relay case. The original 6v horn is loud with a 12v system.

This sale includes the correct oil tank, kick cover/starter/clutch arm, clutch pedal parts and complete sidecar windshield.

I will sell the bike and sidecar separately. Contact me with your offer for either or both.

A $500 deposit is due immediately by PayPal at the end of the auction. The balance must be paid by wire transfer to my account within 3 days. The motorcycle will be released when the funds are verified as received by my bank. There are several companies that safely transport motorcycles. I have personally used Allied with good results. All shipping arrangements are the responsibility of the buyer. I will assist in any way that I can.

Please look carefully at the photos and ask any questions you may have before you place a bid. This motorcycle will be sold with a clean and clear California Title in my name, as is, where is. It is currently registered with and includes the 1942 California plate. This is a 77 year old motorcycle. Although it is rebuilt, all the original parts, while carefully inspected, are 77 years old. Hence, there is no warranty or guarantee.

I reserve the right to end the auction early as I am accepting offers locally. Look carefully at the pictures, please feel free to contact me if you have any questions. Please text or call 8a-5p West Coast time: 650-483-8643, Thanks for your interest, PJ.

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