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Ducati ST4

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Make Model |
Ducat ST4 |
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Year |
1999-00 |
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Engine |
Liquid
cooled, four stroke, 90°“L”twin cylinder, DOHC, desmodromic 4 valve per
cylinder. |
|
Capacity |
916 |
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Bore x Stroke |
94 x 66 mm |
|
Compression Ratio |
11.0:1 |
|
Induction |
Marelli electronic fuel injection, 50mm
throttle body |
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Ignition /
Starting |
- / electric |
|
Max Power |
105 hp 77 kW @ 9000 rpm |
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Max Torque |
89 Nm 9 Kg-m @ 7500 rpm |
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Transmission /
Drive |
6 Speed / chain |
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Front Suspension |
Showa 43mm upside-down fully adjustable fork.
130mm front wheal travel |
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Rear Suspension |
Progressive linkage with fully adjustable
Sachs monoshock with piggy back aluminum swing arm. 148mm rear wheal travel |
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Front Brakes |
2x 320mm discs 4 piston calipers |
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Rear Brakes |
Single 245mm disc 2 piston caliper |
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Front Tyre |
120/70 ZR17 |
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Rear Tyre |
180/55 ZR17 |
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Seat Height |
820 mm / 32. 3in- |
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Dry-Weight |
214.5 kg / 474 lb |
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Fuel Capacity |
21 Litres |
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Consumption average |
19.8 km/lit |
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Standing
¼ Mile |
11.3 sec / 124 mp/h |
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Top Speed |
156 mp/h |
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Overview |
Motorcycle.com |

The Rock Store parking lot on Saturday afternoons, particularly
beneath the large shade tree at the west end of the lot, is replete with shiny
Harleys and other assorted well- and over-chromed American customs. Hardcore
sport bikers segregate themselves toward the sun-drenched east side. In between
the "tweener" bikes reside -- a Buell X1, a Bandit 1200, an old Triumph
Bonneville, a few Japanese cruisers, Beemers and the above-mentioned gentleman's
Ducati ST4. My ride is parked out of place, in the shade among the Harleys, next
to a Titan owned by one of those anonymous "B" level T.V. actors whose faces
populate cheap, syndicated action and detective shows found on cable outlets
such as the USA Network.
"Um, I'm riding an ST4 too." I squint, trying to locate the bike through the
thick, chrome-laden glare. "The red one over there, next to the Titan."
"Oh yeah," says the ST4 man. "You know, that chromed-out Titan is owned by that
T.V. actor."
"What show was he on again?"
"I don't remember but I know I saw him once. I think it was on one of those Silk
Stalkings-type shows that come late Friday nights. I think he was also on an
episode of V.I.P. ..."
"Hey, which V.I.P. babe do you think is hottest?"
The ST4 man ignored my query. He had other, more important things on his mind.
The ST4 man has clearly has a bone to pick with motorcycle journalists, and he
feels that the best venue, of course, in which to raise his complaints is over
MO's ST4.
"You guys have not been fair with this bike," he said with righteous
indignation, laying his hands upon the fuel tank and suddenly resembling the
faith healers and snake handlers of the Appalachians.
I tell him that MO, has been more than fair. We have never written a review
about the ST4 nor uttered a discouraging word.
"Well, maybe not MO, but you guys have not been fair."
The motorcycle press does not speak with one voice, although at times it sounds
like we do. We don't remember reading any reputable magazine or web site
disliking the ST4, although some reviews were lukewarm. Perhaps it's because the
ST4 is essentially a civilized and refined motorcycle made by a manufacturer
that is not known for the civilized and refined. After all, who does Ducati
think they are, Honda?
Another reason may have to do with Moto-Journalist Syndrome (MJS). When you have
the opportunity to ride most all of the latest and greatest motorcycles,
everyday considerations like comfort and practicality sometimes are thrown aside
in favor of all-out, uncompromising performance. After all, why drive Celicas
and Mustangs when you have Porsches and Ferraris at your disposal. The ST4 is
basically a "tweener" bike, a stock 916 superbike engine mounted in a
sport-touring chassis. As a result, while the ST4 possesses performance
attributes, it does represent a compromise of sorts, favoring comfort over
ultra-high performance, and one symptom of MJS is a general aversion to
compromise, real or perceived.
Whatever the reason, the ST4 never received bad reviews. It is an excellent
street bike with ample grunt and horsepower. The riding position is relaxed and
the wind protection isn't bad, although, oddly enough, we felt that the Kawasaki
ZX-9R offered better wind protection. The ST4 also lacks the harsh 996 and 900SS
suspension. The inverted 43mm front forks with 130mm of travel and adjustable
mono shock with 148mm of travel do an excellent job of keeping the chassis tight
while soaking up most expansion joints, bumps and nicks. While it's not exactly
set-up for track days, that's not the ST4's prime directive.
The ST4 is designed to go from Point A to point B, maybe 50 miles apart via the
super slab but almost 150 miles away over the long and winding roads. Afterwards
chow down then find a place to stay for the night, hop aboard the next morning
and do it again. The service manual might as well read: "Ride. Sleep. Repeat."
'The engine is smooth and strong and acceleration is excellent while not
overpowering.'
The heart of the ST4 is the DOHC four-valve, 916cc engine that in a previous
life existed as the platform for Ducati's superbike effort. While Ducati has
pumped up the 916 engine 80cc for superbike duty, 1999 saw the 996 powerplant
produced for the consumer, and the stock 916 engine was assigned new
responsibilities as a sport touring motor. The power figures are impressive:
About 99.5 hp at 9000 rpm and 58.9 ft-lbs of torque at 8750 rpm are more than
respectable, and we doubt that the BMW R1100S -- the ST4's primary competition,
at least in terms of price -- can come close to these figures. But then true
performance is measured on the road, not on a dyno chart.
The ST4 pulls from all over the rev range, and most all of the power it makes is
put straight to the ground. The engine is smooth and strong and acceleration is
excellent while not overpowering. Need that quick burst to make it into the
passing lane? No problem, you'll have all the power you need without having to
worry about shaking the front end if you grab too much throttle. The ST4 is a
very well-behaved Ducati.
Just about everything else on the ST4 is the same as on the ST2. The suspension
and chassis are identical while providing for a ride that is plush and
comfortable. The ST4 handles like a Ducati: solid. This bike isn't upset easily.
The ST4 also has a slightly larger rear tire than the ST2, 180 Metzler MEZ4s
compared to the 170 MEZ4s on the ST2.
Other than different colors and a $2000.00 USD price difference, there isn't
much difference between the ST4 and the ST2. One staffer who rode both
motorcycles, although not back-to-back, thought the brakes felt softer on the
ST4. However, both motorcycles are equipped with the same 320mm floating rotors
with Brembo, 4-piston calipers up front and a 245 mm disc out back, although the
ST4 front rotors are also equipped with an aluminum flange. The only explanation
we could surmise is that the more powerful ST4 engine requires more input into
the progressive brakes in order to slow the bike down because of the ST4's
stronger acceleration. That said, another evaluator who rode both bikes, again
not back-to-back, didn't notice a difference.
In fact, there might not be that much of a difference between the ST4 and the
ST2 other than the engine. If money really isn't that much of an object, then
why not equip your sport tourer with a kick-ass engine? However, a 1998 ST2 we
dynoed measured 57.3 ft-lbs at 6500 rpm and the 2000 ST4 produced 58.9 ft-lbs at
8750 rpm. The main difference is at the top-end where the ST4 made 99.5 peak
horsepower compared to the ST2's 76 ponies. So, is 20 more horsepower at the
top-end enough to justify a $2000.00 price difference? Maybe, but since neither
the ST4 nor the ST2 will see much time on a race track other than the occasional
track school, it's hard to say whether the $2000.00 price difference is worth
it. Even so, buy what feels right and ride the hell out of it.
We a bone of contention with the ST4 and it has to do with the new side stand.
The good news is that Ducati has ditched the infamous spring-loaded side stand.
The bad news is that the bike won't idle in neutral with the side stand down.
This makes things like warming up the bike while putting on helmet and gloves
and closing the garage door somewhat of a hassle. True, we did get used to it
but we still didn't like it.
In the next few months we plan to run the ST4 side by side against the BMW1100S,
the Buell S3T and the Honda VFR. The major concern with the ST4 is maintenance.
Is the ST4 reliable enough as an everyday motorcycle or a long distance sport
tourer, or is it just a comfy 916? After 1600 miles our ST4's idle needs
adjustment and the clutch is beginning to stick. While these aren't necessarily
fatal design flaws, it will be interesting to see how the ST4 stacks up over the
long haul against the competition. Stay tuned...
Source
Motorcycle.com
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