Kawasaki H2 Mach IV
Known as the 'Widowmaker,' the Kawasaki H2 Mach IV's ferocious 748cc 2-stroke triple and abrupt powerband made it one of the fastest bikes of the '70s. It's a prized collector's motorcycle today for its raw, untamed character and status as a 2-stroke icon.
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The Kawasaki H2 Mach IV arrived in 1972 as the bigger, faster successor to the already fearsome 500cc H1. Its 748cc 2-stroke triple engine produced around 74 horsepower, delivering it with a notoriously abrupt powerband that earned the bike the nickname 'Widowmaker.' It was one of the fastest accelerating production motorcycles of its time, cementing its legend as a wild and untamed machine.
Collectors prize the H2 for its raw, unfiltered character and its status as a high point for large-displacement 2-stroke street bikes. Before emissions and noise regulations toned things down, the Mach IV offered a sensory experience that's impossible to replicate today. Its reputation for challenging handling only adds to the mystique, attracting riders who want a true 1970s superbike thrill.
The market for the H2 is well-established, with an average price around $19,000. The wide sales range shows a clear distinction between rider-quality examples and perfectly restored, low-mileage bikes. The earliest 1972 models, with their more aggressive engine tune and classic styling, are typically the most sought-after by collectors.
Buying Tips
- Check for original exhaust pipes. They are prone to rust and damage, and finding correct replacements is difficult and expensive.
- The 2-stroke triple engine can be fragile. Listen for piston slap and ask for any history of seizures or rebuilds.
- Inspect the frame carefully for cracks, especially around the headstock and swingarm pivot, as these bikes were known for frame flex.
- Verify originality. Many H2s were modified or repainted. Stock examples with original Candy paint finishes command a significant premium.
Prices range from $9,600 for rider-quality bikes to $40,000 for top-spec examples.
43 Kawasaki H2 Mach IV vehicles have been tracked across auctions and listings on Hypercars, with 4 currently live.
Data sourced from Bring a Trailer, Cars & Bids, eBay Motors, PCarMarket, and Collecting Cars. Updated daily.
Frequently Asked Questions
How many Kawasaki H2 Mach IV listings are for sale right now?
There are 4 Kawasaki H2 Mach IV listings currently live across auctions, dealers, and marketplaces tracked by Hypercars.