When Ducati declared
it was re-entering the sport-touring segment in 1997 with the ST2 there
were plenty of riders who doubted the Italians really could build a comfortable,
They were wrong:
against all the clichés the ST2 worked just fine as a sports tourer,
offering good comfort with excellent handling. It also went against more
preconceptions: it didn't look particularly special, where Italian bikes
are supposed to be gorgeous, but it didn't rust and fall to pieces either.
In fact, the resistance to corrosion of the ST2 and since then the ST4
has proved to be outstanding - you can use one through the winter and it'll
still come up shiny in the Spring.
The ST4S will
cost you £700 more than an ST4 at £8490, but how it's worth
it! The suspension alone justifies the extra. At the front you benefit
from a pair of top quality inverted Showas with full adjustability and
cool-looking, low friction, gold titanium nitride finish on the sliders,
which gives you more grip and a superior ride quality from finer wheel
At the back is
a top line Ohlins unit, adjustable for ride height plus the rest, and you
can tell this is the business because those adjusters make a big, noticeable
This is just as
well because as it comes from the factory, and probably your Ducati dealer
too, the suspension set up is biased towards high-speed stability at the
expense of everything else. Ducati is playing safe - the ST4S is capable
of around 160mph (not bad for a sports touring V-twin!), but unlike a 996
or other supersports bike, is quite likely to be ridden flat out while
loaded with panniers and passenger, maybe in blustery crosswinds and possibly
on a poorly made road. In these days of seven figure product liability
suits, Ducati (which is owned by Americans, who know about these things...)
decided to take no chances and make the ST4S as secure as possible.
You don't need
it like this though as ground clearance is compromised and the handling
awkward. So (make sure you have a Biro handy...)... increase the front
compression damping from eight to 12 clicks off minimum to reduce dive.
Then increase rear ride height by 10mm and the preload by 5mm from minimum.
This sharpens the steering and the ST4S holds tight lines, steer neutrally
and generally eggs you to take on the next sports bike you see. And this
chassis is so good, you might just beat him, too!
engine's a lot torquier than the ST4 with big power at the top. The " S
" gets the full power 996 motor whereas the cooking model ST4 makes do
with the older, smaller capacity 916 engine, making the " S " the fastest
bike in its class as well as the best handling. Yet you still get the ST
attributes of good comfort and a long tank range - reckon on 180 mile gaps
Oh, what a
big engine you have
of venue for the launch of its new ST4S sports tourer seemed rather odd
at first. Rather than present us with maps and a demanding long distance
road route, we were instead taken to a vehicle proving ground just south
of Milan where we spent the day at a high-speed circuit.
Ducati staff had
explained their reasoning beforehand, that in most respects the ST4S is
no different to the 916cc eight-valve ST4 or 944cc four-valve ST2 Ė and
weíd all had plenty of experience riding those in the last few years.
But it now has
the 996cc eight-valve twin engine and the suspension has been substantially
uprated, so weíd be able to concentrate on the handling improvements and
superbike level of performance.
It didnít sound
too convincing, but turned out to be a very canny move as it gave us a
chance to not only test the suspension with its standard settings, but
also to make alterations in controlled and safe conditions. And how the
bike was transformed when we did.
The first session
on the bike was frankly disappointing. The ST4S was tucking into corners
when you wanted it to remain neutral. It also had a habit of picking up
the front end disconcertingly when the brakes were applied while banked
over. And generally speaking, it didnít have the natural, confidence-inspiring
feel which usually comes with every Ducati badge.
Still, chief development
engineer Andrea Forni had emphasised the distinctive, high quality, titanium
nitride-coated forks Ė which are matched by a top-spec Ohlins shock at
the back Ė and explained how it was adjustable over a huge range. So we
adjusted it, and what a difference.
An increase of
the front endís compression damping, from eight clicks off minimum to 12
clicks, did away with the excessive dive under heavy braking, while attention
to the ride height and spring pre-load at the back altered the bikeís attitude
Ė in both senses.
Both had been
set on their minimum levels, so the ride height was increased by 10mm and
spring pre-load, easily altered by a remote hydraulic adjuster, was upped
by just over 5mm, tipping the bike forward.
With the steering
sharpened and the trail reduced, the bike began to display its true Bologna
heritage with no more standing up in turns.
was an eagerness to dive into corners and the ability to hold tight lines
or change them at will.
So why did Ducati
set up the ST4S so oddly in the first place? Itís to do with the engine.
Aside from minor changes to the inlet cam Ė a little less valve opening
duration, but with slightly more lift to boost mid-range power Ė and a
lower exhaust camshaft position like the ST4 for the engine to fit in the
frame, the motor is identical to that fitted to the 996.
And that means
a claimed top speed a fraction shy of 160mph Ė which, for a bike likely
to be loaded up in all sorts of ways, is a lot.
As Forni pointed
out, Ducati had to take into account the fact that an ST4S might find itself
fitted with panniers (a £350 option) and barrelling down a blustery,
windswept motorway, overloaded with kit and a passenger Ė with the rider
holding the bars with one hand so he can wipe his visor Ė just as it hits
a nasty pothole.
In those circumstances,
it needs to be as stable as possible, and thatís exactly how it was set
up, for maximum stability, even though this setting does compromise other
aspects of the handling.
With less power
thereís no need to play this safe in this way, but with a full-on 117bhp,
996 motor, most riders would prefer to play. So tweak those settings, hike
up the back of the bike Ė no need to touch the rear damping Ė and enjoy.
What you have
here, in what was already one of the most underrated bikes on the market,
is now a proper 996 motor, except that in place of the supersports bikeís
wrist-wrenching riding position, you get comfort good enough to take you
to the south of France in one hit and a ride which is better than any sports
tourer on the market Ė and thatís in an increasingly crowded high-quality
That gold finish
on the forks is not there for looks, but to minimise the internal friction,
increasing suppleness so that even the tiniest imperfections in the road
surface are soaked up rather than bumped over.
The new five-spoke
Brembo-Marchesini wheels help by reducing unsprung weight compared with
the ST4 by 1kg at each end, enhancing suspension performance even more,
and the result is a gorgeous, gliding sensation with supreme wheel control.
It does lead to
another difficulty, though. Now that the ST4S has become such a seriously
efficient cornering machine, its ground clearance can get in the way Ė
if you venture onto a race track, at least. With the suspension set on
low, the sidestand was decking out far too easily, but even with it raised,
you do have a nagging doubt in the back of your mind as to whether Ė or
how hard Ė itís going to scrape the road if you dive into a turn a little
too hot. Still, another day playing with the suspension might well have
reduced the problem even further, and the majority of road riders will
have no problem with this.
slowly by braking a little harder instead. Thereís no traditional Ducati
sponginess from the Brembo stoppers. Instead, thereís just plenty of power,
with a genuinely progressive action thanks to the slightly thicker discs
Ė a move made to cope with the extra heat that more enthusiastic ST4S riders
will surely generate. There no sign of fade, either.
It was a real
surprise that there was so much talk of the fabulous suspension when the
obvious distinction between ST4S and the ST4 is that extra 80cc in the
engine. This gives the bike much needed extra torque at low and medium
rpm, correcting a weakness of the ST4, which would often feel a little
breathless below 5000rpm.
On a 916 itís
not a problem because itís a substantially lighter machine and the engine
is more likely to be revved anyway. But in the sports tourer it meant more
gear-changing than ideal, especially loaded up and negotiating a twisty
The ST4S offers
15 per cent more torque all the way up to around 7000rpm, and itís also
perfectly capable of being trickled down to 1500rpm in top, with none of
the nasty snatching through the transmission which used to typify Ducatis
in this rev range.
Open the throttle
here and the ST4S shudders dramatically, the mirrors flapping and even
the clocks shaking. But it pulls away usefully, then gets stronger and
stronger. By 5000rpm the Duke is becoming seriously quick, then at 7000rpm
itís hammering along.
That gentle inlet
cam revision might boost the mid-range, but it does cause the power to
fall away rapidly after the power peak at 8750rpm. So spinning the engine
to the 10,000rpm limit isnít quite as rewarding as it might be. Still,
this is a blisteringly quick motorcycle.
As a pure sports
machine, the ST4S is a highly capable bike. The suspension is soft compared
with race replicas, but itís beautifully controlled. And although it weighs
a lot more than a big sports bike, itíll still give them a run for their
Yet itís also
supposed to be a touring bike, and long distance comfort is exceptionally
good, being only slightly spoilt by above average wind noise off the top
of the screen and a little buffeting to annoy. Fuel range is slightly less
on the ST4S than the ST4, but the 21-litre (4.6 gallon) tank is still good
for close to 180 miles with reasonably hard riding. The restrained but
classy gunmetal grey finish available on the ST4S should look good for
sophisticated immobiliser system is fitted as standard to the bike. A copper
aerial surrounding the ignition switch interrogates a chip in the ignition
key as you put it in, then sends a code to the on-board computer allowing
the bike to the started Ė or not. And with eight billion ever-changing
codes, you can forget about anyone scanning it.
ST2s and ST4s
have never sold especially well in the UK, but the ST4S deserves to change
all that as itís an outstanding bike. It manages to be the sportiest of
all the sports tourers, offering a real taste of the 996 experience, and
at the same time has managed to build on the strong points we already know
of the ST.
But if you fancy
one, get moving as Ducati will only be building 1500 this year, and the
orders are building.
And thatís good
news for residual values too.
996cc (98mm x 66mm) dohc 8v desmodromic 90 degree V-twin, fuel-injection,
43mm inverted front forks, adjustments for pre-load, compression and rebound
Single Ohlins shock with rising rate linkage, adjustments for pre-load,
compression and rebound damping
Pilot; 120/70 x 17 front, 180/55 x 17 rear
2 x 320mm front discs with four piston calipers, 245mm rear disc with single
Top speed 161mph
trail, wheelbase) 24º, n/a, 143cm
Grin factor 93%