Ducati Monster S4 R 2005 — Specifications

Remembering the Monster S4 R means recalling a time when Ducati was playing around, cramming Superbike engines into roadster frames. It’s 2005, and the Bologna factory decides to push the concept to its logical, or almost, extreme. After the S4 and its 916 engine, here’s the S4 R, with the heart of the 996 – that legendary V-twin that screamed under Fogarty’s tank. The idea was simple, almost brutal: to create the ultimate Monster, a stage beast disguised as a street brawler. At nearly 12,500 euros at the time, it wasn’t a joke, but a manifesto on two wheels.

Visually, the S4 R doesn’t go unnoticed. The magnificent monobrach swingarm, inherited from the 900 MH, gives it a technical and racing look, while the two close-set exhaust pipes under the seat confirm the sporty intention. Alas, the bulky catalytic converter spoils the party, reminding us that even mad things must comply with regulations. But the real spectacle is this engine. The 996 cm3 L-twin protrudes well beyond the trellis frame, promising 113 horsepower at 8750 rpm and, above all, 95 Nm of torque at 7000 rpm. These figures, on a dry weight announced at 193 kg, leave little room for interpretation: we are dealing with a bomb.

On the road, the character is immediate. The handling inherited from more modest Monsters is there, that surprising agility in changing direction, but with a radically different power reserve. As soon as the tachometer exceeds 5000 rpm, the V-twin transforms into a true wildcat, propelling the bike from turn to turn with a much more pronounced rage than on the S4. It must be said that the 996 engine has this meanness at high revs, a desire to scream that was lacking in its little brother. To calm things down, Ducati installed Brembo brakes with 4-piston calipers on 320 mm discs, with exemplary efficiency and progressiveness, far superior to those of the Monster 1000 of the time.

But this sweet madness comes at a price. Stability in curves, while correct, is not at the level of a pure sportbike. The 43 mm inverted Showa fork and the mono shock do the job, but you can feel that the beast prefers frank attacks to long, leaned curves. The riding position, slightly leaned forward, is a good compromise for winding roads, but the hydraulic clutch remains notoriously stiff, a chronic defect of Italian bikes of this generation. As for the finish, it is basic, but let’s admit it, that’s not why you buy such a bike.

So, who is this S4 R for? Certainly not for a beginner, nor even for a touring rider looking for comfort. It’s the track rider’s bike who wants to maintain a civilian appearance, the thrill-seeker who accepts a demanding character and daily compromises. Faced with a more restrained Japanese bike or a more balanced European roadster, the Monster S4 R positions itself as a UFO, an adrenaline distributor. It is less practical and more raw than a classic road sportbike, but it offers a mechanical, sonic and emotional experience that few bikes, even today, can equal. A concentrate of Ducati soul, with its defects and its glorious madness.