1975 Kawasaki H1 Mach III

SOLD FOR: $6,955

Seller accepted post-auction offer.

Sold on January 9, 2024

This auction has ended.

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Additional photos are available here for your perusal.

Kawasaki’s Aircraft Company began the development of a motorcycle engine in 1949. The development was completed in 1952 and mass production started in 1953. The engine was an air-cooled, 148 cc, OHV, four-stroke single cylinder with a maximum power of 3.9 hp at 4,000 rpm. In 1954, the first complete Kawasaki Motorcycle was produced under the name of Meihatsu, a subsidiary of Kawasaki Aircraft. In 1960, Kawasaki completed construction of a factory dedicated exclusively to motorcycle production.

By the mid-1960s, the US had become the largest motorcycle market. American riders were demanding bikes with more horsepower and higher maximum speeds. Kawasaki already had the largest-displacement Japanese machine with their 650 cc four-stroke W series, but it did not fit the niche Kawasaki was aiming for. Honda had introduced its Honda CB450 in 1965 and in 1969, the Suzuki T500 Titan/Cobra appeared. Also in development was the Yamaha XS 650. Already familiar with the Honda CB450, Kawasaki development began work on the top secret N100 Plan in 1967.

The goal was to produce a motorcycle with 500 cc displacement that was able to develop 60 hp and have 13-second quarter-mile times, then considered over the achievable limit for a road bike. When announced in 1969, the H1 was factory quoted in the UK motorcycling press as “the fastest and best accelerating road machine ever produced, being capable of 124 mph and 12.4 sec. for the standing start quarter mile”.

This 1975 triple has a piston-ported two-stroke engine in a steel-tube cradle frame weighing in at 414lbs wet. The engine is an air-cooled 60hp three-cylinder with a displacement of 499cc, generating 42lbs torque. It also has Mikuni VM 28 mm carburetors, and thyristor-based capacitor discharge. The transmission is a chain driven 5-speed manual. The suspension setup is an Inner spring telescopic front fork, three-position spring preloaded adjustable shock absorber and swing arm on the rear. Front brakes were 296mm disc, with 180mm drum on the rear. In the US, the Mach III proved to be very popular. Motorcyclist magazine said the Mach’s power-to-weight ratio was the “best ever produced in a motorcycle meant to sell to anyone who has the money to purchase it.”

This example is VIN: H1F44006. The bike came to Iconic as an import from Japan.

The odometer shows 3,596 miles. However, the bike has undergone a restoration — true mileage is unknown.

In preparation for this listing the seller had us clean, service, and sync the carbs, rebuild the front brakes, and replace the seat pin. We also gave it a new battery, cleaned the chain, and replaced the spark plugs. Finally, we gave the bike a detail.

Our service department notes the following in their condition report:

Gas Tank Internal: Ok
Tire Year Front: 2019 / Rear: 2919
Tire Life Front: 80% / Rear: 80%
Tire Press Front: 36 PSI / Rear: 30PSI
Brake Life Front: 40% / Rear: 35%
Suspension Leaks – Front/Rear: None
Hydraulic Brake Fluid – Front: Fail / Rear: Ok
Transmission Oil – Quality: Ok; Level: Ok
2T Injector Oil Level: Ok, 4/5 full
Low Beam: Ok
High Beam: Ok
Parking Light: Ok
Turn Signals: Ok
Tail Light: Ok
Brake Light: Ok
Plate Light: Ok
Killswitch: Ok
Horn: Ok
Battery: 12.6V, New
Test Ride: 1 mile test ride, unit operates as designed

Braided stainless steel front brake lines.

Hagon rear shocks.

Steering stabilizer.

Inside of the tank:

It is riding on Bridgestone Battlax BT45 tires from 2019.

Cosmetic Blemishes: please see the album up top for all known cosmetic blemishes. Here is a selection:

Currently located at our facility in Santa Monica, California (please make an appointment for an inspection), this Kawasaki is offered on a clean Tennessee title. Please note that as an import, this bike lacks certain compliance and emissions stickers that the state of California would require to transfer a title. Have any H1 Mach III stories or questions about this listing? Let us know in the “Comments” tab!

Additional Information


Santa Monica, California






H1 Mach III


True Mileage Unknown





Title State/Country


Private Party/Dealership


Additional Charges


Total Bids Placed: 19

Auction has ended.

Auction expired without reaching reserve price.

Highest bidder was: s*********3

After the auction ended, the seller accepted an offer of $6,955 including buyer fees.

Bidder Name Bidding Time Bid Auto
s*********3 January 8, 2024 8:53 am PST $6,099 Auto
t**************r January 8, 2024 8:53 am PST $5,999
s*********3 January 8, 2024 8:52 am PST $5,600
t**************r January 8, 2024 8:52 am PST $5,500 Auto
t**************r January 7, 2024 2:25 pm PST $5,350
s*********3 January 7, 2024 2:25 pm PST $5,250 Auto
s*********3 January 7, 2024 2:23 pm PST $5,000 Auto
t**************r January 7, 2024 2:23 pm PST $4,900
s*********3 January 7, 2024 11:29 am PST $4,099
t**************r January 7, 2024 11:29 am PST $3,999 Auto
t**************r January 6, 2024 8:33 pm PST $3,100 Auto
g***a January 6, 2024 8:33 pm PST $3,000
t**************r January 6, 2024 5:26 pm PST $2,700 Auto
b*********2 January 6, 2024 5:26 pm PST $2,600
t**************r January 6, 2024 4:10 pm PST $2,323 Auto
s*********3 January 6, 2024 4:10 pm PST $2,223
t**************r January 6, 2024 4:02 pm PST $1,101
c*********3 January 6, 2024 4:02 pm PST $1,001 Auto
c*********3 January 6, 2024 3:44 pm PST $1
Auction started January 6, 2024 3:36 pm PST
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Shipping Information

Continental US:
Haul Bikes will ship anything sold through Iconic for a starting rate of $750 in the Continental US (prices may increase in rural markets), and Iconic will handle the paperwork on your behalf. You do not need to crate your bike or drain the gas/disconnect the battery if you go with Haul Bikes. We are glad to work with the shipper of your choice as well, but you will have to arrange it.

Please note:

  • spares/extras will have to be shipped separately via FedEx or similar.
  • the fee includes $15,000 of insurance with a $500 deductible. Additional insurance can be purchased at a cost of $50 per additional $5,000 of value.
  • additional details can be found here

Southern California
On a case-by-case basis, we can transport motorcycles in our van.

We are located in Santa Monica, California 90405.
Local Rates (one way):
0-50 miles: $150
50-150 miles: $300

Please contact concierge@iconicmotorbikes.com for a quote.

We recommend TFX

$1,500 for Los Angeles, CA to Canada is a ROUGH ballpark, please contact TFX for an exact quote including shipping and customs.

Europe and Asia:
We recommend Shippio

$5,000 for US to Europe/Asia is a VERY ROUGH ballpark which includes transport as well as customs fees and duties. Please contact Shippio for an exact quote.

Australia/New Zealand:
We recommend Bikes Abroad

$1,500 for US to Australia is a ROUGH ballpark, please contact Bikes Abroad for an exact quote including shipping and customs.

Sorry, VIN Report not available.

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