DUCATI STREETFIGHTER V4 S

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The Streetfighter V4 was an instant success and set new performance benchmarks in the super sports naked segment. Universally appreciated for its aggressive and minimalist aesthetic, characterized by a front inspired by the Joker of the comics, the Streetfighter V4 immediately entered the hearts of enthusiasts.

The natural evolution of the family is a bike that pushes the concepts of the "Fight Formula" even further, the key elements of which are the Panigale V4 stripped of the fairings, high and wide handlebars, 178 kg weight, 208 hp Desmosedici Stradale engine, biplane wings and latest generation electronic package.  

Beyond the "Fight Formula"

Streetfighter V4 is a bike that pushes the concepts of the "Fight Formula" even further. The evolution follows that of the Panigale V4 family: no fairings, high and wide handlebars, 178 kg weight, 208 hp Desmosedici Stradale engine, biplane wings and latest generation electronic package. 

Fun. Light. Exciting.

Streetfighter V4 is the natural evolution of the family that pushes the concepts of the "Fight Formula" even further. The key elements of which are the Panigale V4 stripped of the fairings, high and wide handlebars, 178 kg weight, 208 hp Desmosedici Stradale engine, biplane wings and latest generation electronic package. An evolution that follows that of the Panigale V4 family.

The "Fight Formula", enhanced.

With the V4 and V4 S models, together with the more exclusive and performing V4 SP2, Ducati continues in the application and evolution of the winning "Fight Formula" to remain at the top of the hypernaked segment.

Aerodynamics

To ensure maximum stability both at high speeds and when braking and a lower tendency to wheelie during acceleration, limiting as much as possible the interventions on the chassis so as to have a nimble and quick behaviour in mixed conditions, wings have been developed for the Streetfighter V4 in biplane configuration designed by Ducati Corse specialists in collaboration with the Centro Stile Ducati.

The aerodynamic development was carried out entirely with CFD (Computational Fluid Dynamics) simulations using a calculation method that involves stationary simulations of the motion and pressure fields with the aim of increasing the vertical force on the vehicle, in particular on the front wheel.

Biplane wings by Ducati Corse

To reduce the lateral dimensions of the appendages as much as possible, it was decided to develop an aerodynamic configuration that provides two wings of reduced opening positioned in the shape of a biplane with the aim of making them work independently. The single appendage can be described as a wing with a single element and a rectangular plan, equipped with a winglet on the external lateral end. The wings have been positioned as close as possible to the front wheel (near the side radiator panels) in order to maximize the anti-wheelie effect.

How they work

The vertical load generated by the wings reduces the "buoyancy" of the front wheel at high speeds, the tendency to wheelie and increases stability during braking, entry and cornering.

This dynamic behaviour instils safety and limits the intervention of the electronic controls, so that the rider is led to keep the throttle open for longer as well as to brake later right into the corner, benefitting in terms of performance.

What are the benefits

The effect of the introduction of the aerodynamic appendages is 28 kg of downforce at 270 km / h, of which 20 kg on the front wheel and 8 kg on the rear wheel. The wings also give benefits in terms of heat loss by increasing the speed of passage through the water and oil radiators, respectively by + 2% and + 10%.

Mudguards

The new fenders provide 35 kg (+ 7 kg) of "downforce" at 270 km/h, including 27 kg on the front wheel and 8 kg on the rear.

Design

Design: an emotion amplifier

The new Streetfighter V4 is created to amplify the emotions of the rider by making him or her feel protagonist in every ride on the road. An unrivalled naked bike, modern and technological, with a powerful and exciting design, which does nothing to hide its performance, and which has met with great success from the general public and critics.

The bike conveys sportiness right from the first glance, with the single-seat configuration due to the presence, in the standard equipment, of the passenger seat cover that can be replaced with the saddle and footpegs supplied as is the case on the new Panigale V4. The tank, evolved in shape and with greater capacity (16.5 kg), is embraced by new side covers that support the wings. 

Single-seat saddle

With the single-seat configuration due to the presence, in the standard equipment, of the passenger seat cover that can be replaced with the supplied seat and footrests, the new Streetfighter V4 conveys sportiness at first glance.

New extractors

Behind the radiator the new hot air extractor profiles, which follow the design evolutions made by the Panigale V4 and have a structural function, stand out. They are in fact fixed directly to the frame and integrate the double overlapping wings which, in addition to being a reference to the MotoGP bike, generate the vertical load necessary to guarantee maximum stability at high speeds.

New tank design

The tank of the Streetfighter 2023 is made of aluminium, and goes from 16 to 17 litres with a change of conformation which, as on the Panigale V4, better supports the rider under braking and in cornering. Compared to the Panigale V4, the tank has been suitably modified in the lower area to allow the fitting of a saddle with more foam to increase rider comfort. As with track bikes, the tank has a portion of its capacity located under the rider's seat.

Full-LED headlamp

The Streetfighter V4 design immediately conveys its mission. A message represented by the minimalist design of the full-LED headlamp that recalls the front of the Panigale V4 but evokes the expression of the Joker, the declared inspiration for the Centro Stile Ducati in creating this naked bike from Borgo Panigale. 

Double layer fairing

The compact front headlight assembly is inserted in a double-layer casing with a particularly refined design, in which the air intakes for the air-box and for the cooling of the LED units are obtained, while a rear deflector prevents the flow from impacting directly on the tank. The headlamp is topped by the 5” TFT dashboard (the same as the Panigale V4) integrated with a sophisticated front cover that elegantly hides the fixings and wiring.

Electronics

MotoGP derivation

So many engineering and technological aspects bring the Streetfighter V4 to life. A balances of distinctive lines, brutal power, and cutting-edge technology and components come together in the Fight Formula. 

The latest generation electronic package of the Streetfighter V4, which incorporates the updates introduced on the Panigale V4 family, is based on the use of a 6-axis inertial platform (6D IMU - Inertial Measurement Unit) capable of instantly detecting roll angle, yaw and pitch of the bike in space.

The evolution of power modes

The new Streetfighter implements the new Power Mode logic already introduced with the Ducati Panigale V4 and V4 S, naturally with calibrations dedicated to the Desmosedici Stradale engine in the Streetfighter configuration. 

There are four engine delivery strategies: Full, High, Medium, Low. 

Full and Low are newly devised, while High and Medium have been revised in strategy.  

Full Power Mode

Full Power Mode allows the engine to express its full potential with torque curves without electronic filters, except for first gear. It is not associated with any of the Riding Modes in the default configuration, but must be selected manually by the rider. 

High & Medium Power Mode

For the High and Medium Power Modes, a new Ride by Wire map management system has been developed with dedicated calibration for each of the six gears, which ensures the rider always obtains the optimum thrust every time the throttle is opened. The calibrations dedicated to the Streetfighter V4 guarantee the maximum correlation between the torque value requested by the rider and that actually delivered.

Low Power Mode

The Low Power Mode, on the other hand, has been designed for riding on the road or for low-grip surfaces, limiting the maximum power of the bike to 160 hp and offering a particularly manageable throttle response. 

Second-generation TFT

The Streetfighter V4 uses the same advanced full-TFT 5” colour high resolution instrument as the Panigale V4, with the virtual circular tachometer as the dominant element of the dashboard on the right side.

The graphics are revised in all views, to make all information simpler and more descriptive and help the enthusiast in the calibration of all the adjustable parameters. 

In addition, especially for enthusiasts who want to take advantage of the Streetfighter V4's performance on the track, the dashboard now offers the Track Evo display mode. Even those who prefer to ride on the road will still enjoy a racing-inspired dashboard appearance.

Ducati Electronic Suspension (DES) EVO

In addition to exploiting all the potential offered by the 6D IMU, has a new and more intuitive interface called OBTi (Objective Based Tuning Interface) for the settings.

Ducati Lap Timer GPS (DLT GPS)

The system is equipped with a useful "Best Lap" function, which flashes the time taken for 5 seconds if it is the best chronometric measurement of the current lap session. For each lap, for a total of 15 consecutive laps, the time, the max rpm and the maximum speed are stored, the information can be viewed on the dashboard by entering the specific menu. DLT GPS is available as a Ducati Performance plug-and-play accessory.

Ducati Data Analyser + GPS (DDA+ GPS)

The DDA + GPS, an essential tool in track riding to monitor your performance, in addition to automatically displaying and recording lap times every time the Streetfighter V4 crosses the finish line in a circuit, allows you to store numerous data channels including throttle opening, vehicle speed, engine speed, selected gear, engine temperature, distance travelled, engine rpm, DTC index. The DDA + GPS is available as a Ducati Performance plug-and-play accessory.

Ducati Multimedia System (DMS)

Getting on the bike, the smartphone automatically connects to the bike itself via Bluetooth, thus allowing the rider to manage the main multimedia functions. The track of the song being played, the icon indicating the receipt of new SMS, or the name of the caller are visualized on the TFT display. The audio of the call and the music are transmitted to the earphones of the rider’s helmet. The DMS is available as a Ducati Performance plug-and-play accessory.

State-of-the-art electronic setup

The electronic package includes controls that manage all riding phases: some are responsible for starting, accelerating and braking, others for monitoring traction, others relating to the phases of cornering and exit.

Ducati Power Launch (DPL)

Once set, it will be sufficient to engage first gear and open the throttle: during the first phase of the start, while the driver modulates the release of the clutch, the DPL will keep the Desmosedici Stradale stable around an optimal speed according to the selected DPL level; in the second phase, when the clutch is fully released, the DPL will control the torque delivered to ensure the maximum possible acceleration based on the predefined level.

Ducati Wheelie Control

The Streetfighter V4 is also equipped with the latest version of Ducati Wheelie Control (DWC) EVO. This system, using information from the Bosch 6D IMU, controls wheelie and allows for maximum acceleration performance with ease and safety

Ducati Electronic Suspension

The S version is equipped with event-based Öhlins suspension with electronic control, based on the second generation Öhlins Smart EC. In addition to exploiting all the potential offered by the 6D IMU, has a new and more intuitive interface called OBTi (Objective Based Tuning Interface) for the settings.

Ducati Traction Control (DTC) EVO 2

The new Ducati Traction Control (DTC) EVO 2 strategy derives from the Ducati Desmosedici GP18 and is already used on the Panigale V4 R and V4 R SBK.

Chassis and Ergonomics

Chassis

The Streetfighter V4 confirms the chassis scheme involving Front Frame and single-sided swingarm, both made of aluminum, with upside-down fork and mechanically adjustable Sachs shock absorber on the V4 version, while the Streetfighter V4 S relies on Öhlins semi-active suspension with SmartEC 2.0 interface. 

The chassis layout is complemented by the trellis seatpost frame, attached above the "Front Frame" and bolted inferiorly to the rear bank head.

Front-Frame

 

The Streetfighter V4 uses the "Front Frame" frame derived from the experience gained in MotoGP, which uses the Desmosedici Stradale engine with a load-bearing function.

The main difference in layout compared to traditional perimeter frames is the use of the engine as a structural element. The "Front Frame" provides a compact front structure, weighing only 4 kg, fixed directly to the upper half-casing of the front bank and to the head of the rear bank of the V4, whose base also acts as a fixing for the rear suspension and as a fulcrum point of the single-sided swingarm.

The most important advantage of the Ducati "Front Frame" is the use of the Desmosedici Stradale engine to achieve the desired stiffness: this has made it possible to significantly reduce the extension of the main frame and its weight, obtaining a higher stiffness / weight ratio. Added to this advantage is the reduced length of the uprights that run sideways to the engine, which allowed the Borgo Panigale engineers to design a compact bike, especially in the rider's seating area.

The chassis layout is completed by the trellis seat-post frame, fixed at the top to the "Front Frame" and screwed below the head of the rear bank.

Refined suspension

The Streetfighter V4 features a 43 mm diameter Showa Big Piston Fork (BPF) fully adjustable in hydraulic brake, compression and rebound, and spring preload. The fork sliders house chrome-plated stanchions on to which Brembo radial brake calipers are attached. The front package is completed by a Sachs steering damper. At the rear there is a fully adjustable Sachs shock absorber fixed on one side to the Desmosedici Stradale engine by means of a forged aluminium piece.

Higher swingarm pivot

The swingarm pivot of the Streetfighter V4 2023 is positioned 4 mm higher, increasing the anti-squat action that helps the rider thanks to greater stability, precision and the ability to maintain the trajectory when exiting corners and, in general, in all acceleration situations.

Rims and tyres

While the Streetfighter V4 is fitted with cast aluminium wheels with a 5-spoke design, the V4 S version is equipped with Marchesini 3-spoke forged aluminium alloy wheels.

The rims are fitted with Pirelli Diablo Rosso Corsa IV tyres, which combine track performance with versatility on the road, in sizes 120/70 ZR17 for the front and 200/60 ZR 17 for the rear.

Braking system with Brembo Stylema® calipers

The Streetfighter V4 range features the powerful Brembo Stylema® monobloc calipers which represent the evolution of the already performing M50 calipers.

The twin Brembo calipers each have four 30 mm diameter pistons that work on 330 mm diameter discs, ensuring exceptional braking power. While at the rear we find a single 245 mm disc with 2-piston caliper. The braking system is assisted by the ABS Cornering EVO system, which uses the lightweight 9.1MP control unit.

Lithium-ion battery

The standard equipment is enriched by a lithium-ion battery for the S version, 1.7 kg lighter than the previous one.

Engine

Desmosedici Stradale

The Streetfighter V4 is equipped with the 1,103 cc Desmosedici Stradale engine. In this Euro 5 configuration the 90° V4 delivers 208 hp (153 kW) at 13,000 rpm. A high level of power for a naked, unrivalled in the segment, and consistent with the crazy and exaggerated image that is typical of the Ducati Streetfighter V4. The maximum torque value of 123 Nm (12.5 kgm) at 9,500 rpm is virtually unchanged compared to the Panigale V4. A dedicated engine control map allows you to safely exploit the performance of the Streetfighter V4 in road use, which with the 2023 model benefits from all the updates introduced on the Panigale V4 starting in 2022.

These values, achieved through a new calibration and exhaust, make the bike even more enjoyable on roads that are all curves.