Harley-Davidson Knucklehead
The Knucklehead is the legendary 1936-1947 model that introduced Harley-Davidson's first overhead-valve Big Twin engine. It's a cornerstone of American motorcycle collecting, with values that heavily prioritize originality and matching numbers.
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4 listed in the past year. The last was 4 weeks ago.
Harley-Davidson Knucklehead prices by year
| Year | Median (3 yrs) | Middle 50% | Sales (3 yrs) | For sale now |
|---|---|---|---|---|
| 1936 | – | – | 0 | 0 |
| 1937 | $36k | – | 1 | 0 |
| 1939 | $80k | – | 1 | 0 |
| 1941 | – | – | 0 | 0 |
| 1946 | $18k | – | 1 | 0 |
| 1947 | $36k | – | 3 | 1 |
Auction sales in the last 3 years; prices leave out salvage and other branded titles.
Listings
The Harley-Davidson EL, famously nicknamed the 'Knucklehead,' marked a major turning point for the company when it debuted in 1936. It was Harley's first production overhead-valve V-twin engine, a significant technological step up from the preceding Flathead models. The design, with rocker boxes resembling the knuckles of a fist, established the look and layout for all subsequent Harley Big Twins, making it a true icon of American motorcycling. Production ran from 1936 until 1947, spanning the pre-war, wartime, and post-war eras.
Collectors seek out Knuckleheads for their historical importance and classic styling. Early 1936 models are particularly desirable due to their one-year-only features, while any original, numbers-matching bike is considered a top-tier collectible. Because these motorcycles were so popular for customization and chopping, finding an unmolested example is rare and adds a significant premium. The bike's reputation was cemented by its use in everything from civilian cruising to its role in creating chopper culture.
Buying Tips
- Verify belly numbers. Matching engine case numbers are critical for value, and re-stamped cases are a major concern.
- Check frame originality. Many frames were cut, raked, or replaced over the years. Look for tell-tale signs of modification or non-factory welds, especially around the neck.
- Scrutinize for year-correct parts. Details like tanks, fenders, dashes, and springer front ends changed throughout the production run. Incorrect parts can significantly impact a bike's value.
- Expect oil leaks. These engines are known to weep oil, but be wary of excessive leaks that could point to cracked cases or other major mechanical problems.
- Get an expert opinion. If you're not deeply familiar with Knuckleheads, have a specialist inspect the bike to confirm its authenticity and condition.
62 Harley-Davidson Knucklehead vehicles have been tracked across auctions and listings on Hypercars, with 1 currently live.
Data sourced from auction results and dealer and private listings, including Bring a Trailer, Cars & Bids, Mecum, RM Sotheby’s and eBay Motors. Updated daily.
Frequently Asked Questions
How many Harley-Davidson Knucklehead listings are for sale right now?
There is 1 Harley-Davidson Knucklehead listing currently live across auctions, dealers, and marketplaces tracked by Hypercars.