Harley Davidson Knucklehead Motorcycles

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As a Harley enthusiast, you know that one of the more sought after vintage Harley motorcycles is the so-called Harley Knucklehead. The Knucklehead nickname was specifically given to this particular line of Harley motorcycles due shape of the V-Twin actually resembling a person's knuckles. However, the Knucklehead name did not become associated with this particular motorcycle until sometime in the early to mid 1960's when motorcycle chopper groups began to form. Harley had originally and formally called this engine the 61 OHV and built the motorcycle as a 61E or 61EL, which stood for the 61 cubic inch size of the engine and it being an overhead valve type engine. Owners of the motorcycle and other motorcycle enthusiasts of the 1930's and 1940's would more commonly call this particular Harley motorcycle an OHV, for it's overhead valve design.

The Harley motorcycles preceding the Knucklehead had been built as single overhead valve engines, which made the Knucklehead motorcycle models completely new and unique to the Harley enthusiast! However, not everything was great with the Harley Knucklehead motorcycle at the start of manufacture. Due to valvetrain problems Harley Davidson had to completely redesign the system for all models built after the engine problem was found, and also retrofit all Knuckleheads delivered and sold prior to the valvetrain crisis.

The 1936 through 1940 Harley Knuckleheads were available in 1000cc engines only, with Harley introducting a 1200cc engine for the 1941 through 1947 model years. If you chose, you could still purchase the 1000cc engine until 1947.

Harley Knucklehead Motorcycle for Sale at Ebay

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Harley-Davidson : Other 1947 Knucklehead, matching bellie numbers, kept up to date over the years.

Selling for Only: $10,200.00
Sale Ends In: 1d 19h 28m

BAKER 6-INTO-4 SPEED TRANNY NATURAL W/ KICKER HARLEY KNUCKLEHEAD PANHEAD 36-64

Selling for Only: $3,100.00
Sale Ends In: 2d 2h 25m

Harley-Davidson : Touring 1977 HARLEY DAVIDSON FLH CHOPPER BOBBER LOWER RESERVE PANHEAD KNUCKLEHEAD

Selling for Only: $7,999.00
Sale Ends In: 2d 17h 34m

ORIGINAL VINTAGE HARLEY KNUCKLEHEAD GAS TANKS 1936 1937 1938 1939 ! w@w !!!!!

Selling for Only: $4,195.00
Sale Ends In: 3d 6h 32m

Harley-Davidson : Other 1945 Harley Davidson Knucklehead FL model 74"

Selling for Only: $19,995.00
Sale Ends In: 3d 6h 39m

Harley-Davidson : Other 1937 Harley EL Knucklehead Restored

Selling for Only: $25,100.00
Sale Ends In: 3d 7h 7m

Harley 1947 EL Knucklehead motor barn find $7000 RESERVE AUCTION with BUY-IT-NOW

Selling for Only: $5,500.00
Sale Ends In: 3d 7h 28m

Harley-Davidson : Other ORIGINAL 1946 KNUCKLEHEAD FLATHEAD SIDECAR MATCHING NUMBERS VERY NICE CONDITION

Selling for Only: $5,100.00
Sale Ends In: 4d 7h 38m

Harley-Davidson : Other 1942 Knuckle Head Harley Davidson Motorcycle

Selling for Only: $22,433.00
Sale Ends In: 4d 8h 4m

The Knucklehead engine gave Harley the chance to give their motorcycles a new way of referring to their motorcycles by creating engines that allowed the passerby a chance to identify what type of Harley they were seeing just by looking at the engine design. The panhead, shovelhead, flathead, blockhead, and fathead were all nicknamed with the engine styling in mind.