Kawasaki H1 Mach III
Prized by collectors, the Kawasaki H1 Mach III earned its 'Widowmaker' nickname with a powerful 500cc two-stroke triple engine. It's famous for breathtaking acceleration and challenging handling that defined an era of unapologetic performance.
Find one with Spotter →Kawasaki H1 Mach III sold for a median of $9,320 over the last 12 months, based on 5 auction sales; the middle 50% sold between $7,500 and $10,750. 2 currently for sale.
The Kawasaki H1 Mach III shocked the motorcycle world when it debuted in 1969. Its 500cc 2-stroke triple-cylinder engine produced a claimed 60 horsepower, which was a huge number for a sub-400-pound bike. This combination created breathtaking acceleration and a reputation for challenging handling, earning it the nickname "Widowmaker."
Collectors prize the H1 for its raw character and historical significance. It represents a period of unapologetic performance before emissions and noise regulations softened motorcycles. The earliest models, particularly the 1969 version in Peacock Gray, are the most sought-after for their purity of design and notorious performance.
Today's market is steady, with an average price just under $9,000. While project bikes are available for much less, perfectly restored examples can easily command over $20,000. Buyers place a high value on originality, so bikes with correct paint and factory exhausts fetch the highest prices.
Buying Tips
- Check for the original, stamped exhausts. These are extremely difficult to find, and correct replacements are very expensive.
- The center cylinder is prone to overheating. Listen for odd engine noises and check compression if possible.
- Inspect the frame for cracks, especially around the steering head and swingarm mounts. The bike's power often overwhelmed its chassis.
- Verify matching frame and engine numbers. Many bikes were crashed or had engines swapped over the years.
Prices range from $3,550 for projects to $23,250 for pristine, concours-level examples.
52 Kawasaki H1 Mach III vehicles have been tracked across auctions and listings on Hypercars, with 2 currently live.
Data sourced from Bring a Trailer, Cars & Bids, eBay Motors, PCarMarket, and Collecting Cars. Updated daily.
Frequently Asked Questions
How much does a Kawasaki H1 Mach III cost?
Over the last 12 months, Kawasaki H1 Mach III sold for a median of $9,320 across 5 auction sales tracked on Hypercars; the middle 50% sold between $7,500 and $10,750. There are 2 currently for sale.
How many Kawasaki H1 Mach III listings are for sale right now?
There are 2 Kawasaki H1 Mach III listings currently live across auctions, dealers, and marketplaces tracked by Hypercars.