Four stroke, transverse four
cylinder, DOHC, 4 valves per cylinder.
Bore x Stroke
68 x 51.5 mm
4x 36 mm Keihin CVKD (Constant Velocity)
105.3 hp / 78.4 kW @ 10500rpm
Max Power Rear Tyre
94.1hp @ 10400 rpm
6.76Kgm @ 9000rpm
Multi plate wet (oil submerged) hydraulic
43mm Telescopic forks.
adjustable preload and 12-way rebound damping,
Front Wheel Travel
120 mm / 4.7 in
Uni Track monoshock.
adjustable preload and 4-way rebound damping, 140mm wheel travel.
Front Wheel Travel
140 mm / 5.5 in
2x 310mm discs 4 piston calipers
Single 230mm disc 2 piston caliper
100 mm / 4.04 in
1455 mm / 57.2 in
205 kg / 451.9 lbs
Braking 60 - 0 / 100 - 0
13.3 m / 37.5 m
11.40 sec / 120.5 mph
245.5 km/h / 152.5 mph
The ZXR750 is
Kawasaki's entry-level World Superbike contender for the racer on a budget
in 1989. It is also a very fine sports roadster. Instead of building
expensive limited edition World Superbike specials like Honda's RC30 and
Yamaha's OWOl, Kawasaki decided to mass manufacture a cheaper, more basic
750 that they op could sell to the ordinary motorcyclist. Race kits are
available like for the track fiends but essentially the ZXR is a road bike
that can be transformed into a racer, not the other way round.
Limited edition specials have
never interested Kawasaki and their decision to mass produce the ZXR at
reasonable cost led to a refreshing design brief. Instead of assembling an
expensive, hugely powerful engine, they only mildly tuned their GPX750 road
bike engine. They then installed it in a trick, all new sports chassis with
styling that made it look like the factory endurance racer. That way racers
who wanted tuned engines could spend money on the factory racekits while the
road rider got a proven motor in a new, sharp handling package.
That the ZXR750 only produced
108hp compared to the 106hp of the much older and traditionally styled
GPX750 proved a disappointment to some people. It shouldn't have done
because the ZXR's cycle parts allow all of the 108hp to be enjoyed to the
hilt. The ZXR is one of the few modern 750s that can be ridden to its
maximum in comparative safety. Even without blinding horsepower it provides
maximum riding thrills.
The suspension, although
multi-adjustable, is sports stiff and this, combined with the cramped and
spartan riding position, can be punishing on anything but dead smooth roads.
The rider is stretched over the high and wide tank to the clip-on
handlebars. The seat is hard and any bumps initially absorbed by the harsh
springing tend to be transmitted through to the rider's chest and crotch.
That aside, once the suspension
and ride height have been set up to suit the individual and the terrain, the
ZXR is very surefooted, stable and predictable. The steering is definitely
not quick but its neutral to heavy action encourages hanging-off with the
rider transferring his weight around the turns like a real racer. The
slightly top heavy feel disappears at speed. Above 100mph the enforced
riding position starts working for the rider, the wind lifting the pressure
off the wrists and the handling becoming increasingly lively and responsive.
The engine was extensively
revised in 1990 and features a lot of parts previously only available in the
racekit. Fed by big, semi-downdraft carbs, the current model wears a new
cylinder head, larger valves and smaller, lighter pistons. The factory's
engine tuners have extended both the powerband
and top end horsepower, though it
remains an engine that has to be revved hard to give of its best.
Equipped with typically strong
Kawasaki brakes and excellently finished with quality paint and snug-fitting
bodywork, the ZXR is an interesting variation of the race-replica theme
offering a proven roadster engine in a race-orientated chassis. Strangely,
the kitted versions run by privateers in World Superbike races have
struggled against the much more expensive RC30s, OWOls and Ducati 851s. The
factory have a moderately successful Formula-One spec version called the ZX7
Stinger but that's a hand-built, mega-expensive raceshop creation bearing
little resemblance to the mass produced bike.
Ride Magazine Review
BECAUSE Kawasaki got most of it
right first time. By modern standards a ZXR's 205kg and 92 back-wheel
horsepower are more road than race but that's fine by us. Or it would be if
you could still buy a new one. By this age (nine) most sports bikes are
knackered. Worn bearings, suspension and neglected brakes turn once taut
sports weapons into plodders.
The ZXR750 has always been a
hairy motorbike. Launched in 1989 as a poor-man's Honda RC30, its claimed
107bhp, alloy beam frame and endurance racer styling put it top of most
riders' Christmas list. Who cared if the 'Hoover tubing' air intakes didn't
go anywhere or improve performance, or the
suspension threw you out of the
seat when you ran over a small leaf? The ZXR looked the business and had all
the right gizmos for a late-80s sports bike.
Kawasaki sold boatloads. You
don't see many in showrooms but there are plenty still around - normally in
the hands of devoted owners. Actually, ZXR owners are fanatics and those
with early H-models are the worst. The colour-matched seat, wheels and
master cylinder covers on this one aren't the work of a one-off loony, there
are dozens like this.
Kar rode it back from the dealer.
"It wasn't as uncomfortable as expected," he said, "for the first few
hundred yards at least. Then I hit a bump, then another, and another. I
remember the journey there being
Unlike most biker legends, the
ZXR suspension horrors are true. On smooth roads you never think about it,
but on bumpy stuff it's always on your mind. Following Tom on the GSX-R, the
Kawasaki's back wheel spent more time airborne than on the ground. Meanwhile
my battered knackers retreated upstairs in a desperate act of
Tom normally likes bikes that put
up a fight, but not this one. "On decent roads it steers better than the
Suzuki, dropping into corners with a nudge on the bars. Thing is, where I
live the roads are bumpy and I want to have children one day. A ZXR would
finish me off."
Adrian reckoned it felt more like
an overweight 600 than a sports 750. "The riding position is much more
accommodating than the Suzuki's and would be comfy if the suspension let you
stay in the saddle long enough. You sit in, rather than on, the bike because
the footpegs are lower," he says.
After all the aggressive styling
and violent chassis behaviour the engine's a bit of a let down: smooth and
free-revving but not as exciting as a 750 should be. Most of the power lives
above 8000rpm but there's no big kick like the Suzuki, making the ZXR feel
tame in comparison.
Not being fast by Yamaha YZF-R1
standards isn't always a handicap for a road bike. After all, 150mph isn't
exactly slow. Most ZXRs are bought by riders climbing the performance
ladder - for them the Kawasaki still feels suitably sporty. And with the
suspension sorted, it has the added benefit of rock steady stability.
Early ZXR build quality was
superb and it takes serious abuse to kill one. Our bike had some rough edges
but I've seen a lot of newer bikes in worse nick. Which is why they've
always been strong sellers. Not long ago a nice ZXR750H1 cost much more than
the equivalent GSX-R750. Things have evened up recently and prices are
falling, but for now you'll still need at ^, least three grand for a nice
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