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.
Find one with Spotter →Typical sold price of a Harley-Davidson Knucklehead ranges from $10,303 to $75,244, based on 64 sales tracked on Hypercars. 1 currently for sale.
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.
The market for Knuckleheads is mature, with a wide value spread based on originality and condition. The average sale price hovers around $33,000, but this figure includes heavily modified bikes and incomplete projects. Pristine, documented, and correct pre-war examples can sell for over $75,000, while non-original choppers or bikes with mismatched numbers sell at the lower end of the spectrum. These bikes represent a blue-chip asset in the vintage motorcycle world.
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.
Based on recent sales, prices range from $14,200 for projects and modified bikes to $79,900 for restored, investment-grade examples.
64 Harley-Davidson Knucklehead vehicles have been tracked across auctions and listings on Hypercars, with 1 currently live. Sold prices range from $1,035 to $105,300.
Data sourced from Bring a Trailer, Cars & Bids, eBay Motors, PCarMarket, and Collecting Cars. Updated daily.
Frequently Asked Questions
How much does a Harley-Davidson Knucklehead cost?
Based on 64 sales tracked on Hypercars, Harley-Davidson Knucklehead prices typically range from $10,303 to $75,244. There is 1 currently for sale.
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.