https://en.m.wikipedia.org/wiki/Kawasaki_triple
The
H2 750 was introduced in 1972, the culmination of Kawasaki's two-stroke project. Kawasaki said of the bike, "It's so quick it demands the razor-sharp reactions of an experienced rider."
[10]
Its engine displacement of 748 cc (45.6 cu in) produced 55 kW (74 hp) at 6,800 rpm.
[7] The engine was entirely new and not a bored-out 500. With larger
displacement as well as less aggressive porting and ignition timing,
[10] the H2
750 had a wider power band than the
500H1, though Roland Brown said it was still "barely more practical" than the smaller predecessor, because Kawasaki had "done little" to address chassis problems, and so the bike was still prone to speed wobble.
[7] The 14 bhp (10 kW) gain over the
500 H1 put the H2's output well ahead of its close rivals, the air-cooled four-stroke Honda CB750 and the
liquid-cooled two-stroke
Suzuki GT750.
[10]
To help address the speed wobble issue, the H2 came with a friction-type
steering damper, as well as a built-in frame lug to attach a hydraulic steering damper.
[7] The H2 had a front disc brake, an all-new capacitor discharge ignition system which performed better than cap and rotor type, was virtually maintenance free, and was unique to the H2. The H2 also had a chain oiler, and a steering friction damper.
[12] The front disc brake performed adequately, though some riders added a second front disc for more braking performance.
[10]
Even with its limitations, the H2 was a success, because there were not many other bikes that could, Brown said, "even approach" the performance of the H2 Mach IV.
[7] A standard, factory produced H2 was able to travel a 1⁄4 mi (0.40 km) from a standing start in as low as 12.0 seconds with an expert rider on board,
[12] or 0 to 100 mph (0 to 161 km/h) in under 13 seconds.
[7] In 1975
Cycle Worldtested the H2 Mach IV's quarter mile at 13.06 seconds 99.55 mph (160.21 km/h), with a
0 to 60 mph time of 4.3 seconds, 0 to 100 mph time of 13.2 seconds, and a top speed of 110 mph (180 km/h).
[13]
The H-2 was comparison tested by
Cyclemagazine in 1973 against the
Ducati 750, the Honda CB750, the
Harley-Davidson Sportster1000, the
Kawasaki Z1, the
Triumph Trident750, and the
Norton Commando 750. The competition consisted of acceleration, braking distance, and road race course lap-times. Each test was run several times including 10 attempts at a fastest road course time. The H2 was the fastest accelerating machine, posting the fastest 1/4 mile run on a drag strip. Experts were surprised at the other results. Despite an uncomfortable feel and slight front wheel hop under hard braking and not giving the sensation of stopping particularly fast it had the shortest stopping distance and highest braking G load of all the bikes. On the road course, despite what had been heard and written about its ill handling, frame flexing and the supposed tendency to
speed wobble exiting high speed turns, it was tied for the fastest lap time with the Kawasaki Z-1 to the tenth of a second. Overall the Kawasaki H-2 750 had the lowest ET, second-highest quarter-mile speed, the fastest lap time, the strongest braking force, the highest torque and horsepower readings on the dynamometer, the highest power-to-weight ratio, the lowest price and scored by points for performance was by far the least expensive per unit displacement.
[14]
Kawasaki's reputation for building what motorcycle writer Alastair Walker called, "scarily fast, good-looking, no holds barred motorcycles" began with the H1.
[15] The H2 was part of the rise of the Japanese superbikes, contributing to the decline of Harley Davidson, and nearly extinguished the British motorcycle industry in the US for a long period.
[12][16]
BOSS MACHINE
Gains about 10hp with the expansion chambers and lower weight of the pipes. Think loud and smoky! Love it, I've got a few others running, 750cc, 500cc, 400cc, all triples