Short answer: Choose the Ducati Streetfighter V4 if your priority is the highest published performance and premium hardware for fast road or track riding. Choose the Kawasaki Z900 when an inline-four character, a broad electronic-aid package and a potentially more manageable ownership proposition matter more. The available manufacturer data does not establish one universal winner, and the motorcycles listed here are not the same model year: Ducati’s figures and prices are for the US MY25 Streetfighter V4, while Kawasaki’s equipment information comes from its US 2026 Z900 ABS page.
What is actually being compared?
This is a specification-led comparison of a high-output V4 naked bike and a four-cylinder Japanese supernaked. Ducati’s US listing covers the MY25 Streetfighter V4 and V4 S. Kawasaki’s US material covers both a 2025 Z900 ABS page and a 2026 Z900 ABS page. Confirm the exact year, trim and country before treating equipment or price as interchangeable.
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The figures below are manufacturer claims and configured equipment, not independent acceleration, braking, fuel-economy, comfort or reliability tests. Ducati also warns that specifications and equipment can vary by market; a local dealer is the final check for a bike you can actually buy.
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| Item | Ducati Streetfighter V4 MY25 | Ducati Streetfighter V4 S MY25 | Kawasaki Z900 ABS (2026 US listing) |
|---|---|---|---|
| Engine | 1,103 cc 90-degree Desmosedici Stradale V4 | 1,103 cc 90-degree Desmosedici Stradale V4 | Liquid-cooled four-stroke inline-four |
| Claimed peak power | 205 hp (150.7 kW) at 12,650 rpm | 205 hp (150.7 kW) at 12,650 rpm | Not stated on the cited page |
| Claimed peak torque | 88.3 lb-ft (119.7 Nm) at 11,500 rpm | 88.3 lb-ft (119.7 Nm) at 11,500 rpm | Not stated on the cited page |
| Wet weight basis | 421 lb (191 kg), without fuel | 417 lb (189 kg), without fuel | Not stated on the cited page |
| Seat height | 33.3 in (845 mm) | 33.3 in (845 mm) | Not stated on the cited page |
| Transmission | Six-speed; Ducati Quick Shift up/down 2.0 | Six-speed; Ducati Quick Shift up/down 2.0 | Six-speed return-shift transmission; Kawasaki Quick Shifter listed |
| Front suspension | Fully adjustable 43 mm Showa BPF fork | Öhlins NIX30 electronic suspension | Exact hardware not stated on the cited page |
| Rear suspension | Sachs shock | Öhlins TTX36 electronic suspension | Exact hardware not stated on the cited page |
| Wheel and battery equipment | Light-alloy wheels; battery type not stated in the cited summary | Forged aluminum wheels and lithium battery | Not stated on the cited page |
| US displayed price | $24,595 MSRP | $30,995 for Ducati Red; V4 S Corse shown at $32,995 | Not supplied by the cited Kawasaki pages |
| Warranty shown | 24 months, unlimited mileage | 24 months, unlimited mileage | Not stated in the cited comparison material |
Source: Ducati’s MY25 US Streetfighter V4 listing and Kawasaki’s US 2026 Z900 ABS listing. A separate Kawasaki 2025 Z900 ABS page identifies a liquid-cooled four-cylinder DOHC 16-valve engine; do not assume every 2026 feature is fitted to the 2025 motorcycle.
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Engine character and performance positioning
Ducati: superbike-derived V4 output
The Streetfighter V4 uses Ducati’s 1,103 cc 90-degree Desmosedici Stradale V4. The MY25 street specification is rated at 205 hp and 88.3 lb-ft, figures that put it in a distinctly premium, superbike-derived performance category. Ducati says the motorcycle shares its engine, chassis and electronics configuration with the 2025 Panigale V4, while different intakes produce a different power result.
That relationship explains the Ducati’s intended audience: riders who want extreme acceleration potential, high-rpm intensity and track-capable hardware without full bodywork. The engine’s output is a manufacturer rating, not proof of a particular dyno result or road speed. Tire condition, temperature, fuel, gearing, rider weight and local emissions calibration all affect what a rider experiences.
Ducati also quotes 226 hp when the bike is fitted with the Ducati Performance by Akrapovič racing exhaust in track configuration. That is an optional racing setup, not the standard street motorcycle, and it should not be used as the normal Streetfighter V4 comparison figure. Details appear in Ducati’s November 28, 2024 announcement: New Ducati Streetfighter V4: the highest performing Fight Formula ever.
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Kawasaki: inline-four flexibility
Kawasaki identifies the Z900 as a liquid-cooled inline-four. The cited 2025 page describes a four-cylinder DOHC 16-valve engine, while the 2026 page lists a six-speed transmission and the electronic systems detailed below. The supplied Kawasaki pages do not state a directly comparable peak-horsepower or torque figure, so a numerical output ranking would go beyond the evidence.
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An inline-four is a different ownership proposition from the Ducati’s V4 even before power is considered. Buyers who value a familiar four-cylinder layout, a linear-feeling throttle response and everyday road usability should evaluate the Z900 on those characteristics during a ride rather than infer them from the Ducati’s headline output. The manufacturer equipment list tells you what systems are fitted; it does not tell you how either engine feels at low speed, in traffic or when ridden hard.
Electronics and chassis equipment
Streetfighter V4 standard equipment
The standard Ducati lists a fully adjustable 43 mm Showa BPF fork, Sachs rear shock and steering damper. Its six-speed gearbox includes Ducati Quick Shift up/down 2.0. This is substantial hardware, but adjustment still depends on correct spring rates, sag and damping settings for the rider and intended use. No independent setup or track test is established here.
What the V4 S adds
The V4 S replaces the conventional suspension package with Öhlins NIX30 and TTX36 electronic suspension controlled by Öhlins Smart EC 3.0. It also adds an Öhlins steering damper, forged aluminum wheels and a lithium battery. Those changes target riders who will exploit electronic suspension adjustment, sharper wheel response or lower listed mass; they also explain much of the price gap between the standard V4 and V4 S.
Z900 electronic-aid package
Kawasaki’s 2026 US listing includes an economical-riding indicator, electronic cruise control, Kawasaki traction control (KTRC), ABS, power modes, Kawasaki Cornering Management Function (KCMF), Kawasaki Quick Shifter (KQS) and IMU-enhanced chassis-orientation awareness. These are meaningful buying criteria for road riders: cruise control can reduce fatigue on long highway sections, while traction, cornering-management and power-mode systems let a rider tailor intervention to conditions.
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The list is not a promise that the Kawasaki will be faster, safer in every circumstance or easier to configure than the Ducati. It describes the systems Kawasaki says are included on that specific US 2026 model. Check the dashboard controls, available modes and regional specification at the dealership, particularly if you are considering a 2025 bike.
Fit, weight and everyday maneuvering
What Ducati publishes
Ducati lists a 33.3-inch (845 mm) seat height for both the standard V4 and V4 S. Published wet weight without fuel is 421 lb for the standard V4 and 417 lb for the V4 S. Because the weight definition excludes fuel, it cannot be compared fairly with a Kawasaki figure unless Kawasaki publishes the same basis. Seat height alone also does not predict reach to the ground: seat width, suspension sag, boot choice and rider inseam matter.
The V4’s high output and premium chassis call for deliberate rider fit. Before buying, sit on the actual motorcycle with the bars turned, lift it from the side stand and check that you can support it comfortably at a stop. A lighter listed V4 S is not automatically easier for every rider if the ergonomics or seat shape do not suit them.
What remains to verify on the Z900
The supplied Kawasaki pages do not provide a comparable weight or seat-height figure in the evidence used here. Ask for the current specification sheet and measure your reach on the exact trim. Do not borrow dimensions from another Z900 year, an accessory seat or a different regional model.
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Price, fees and ownership terms
Ducati’s displayed US pricing
Ducati’s current US MY25 page displays $24,595 for the Streetfighter V4 and $30,995 for the Ducati Red V4 S. It also shows a V4 S Corse at $32,995. These are displayed US MSRPs, not guaranteed transaction prices. Ducati states that the amounts exclude a $1,295 destination charge, options, taxes, title, registration, dealer charges and other listed fees, and that the dealer sets the actual selling price.
Using only those displayed figures, the V4 S carries a $6,400 premium over the standard V4 before destination and other charges. Whether its electronic Öhlins suspension, forged wheels and lithium battery justify that difference depends on how often you ride a track, how much you value electronically adjustable suspension and what local dealers charge.
Kawasaki price is not established here
The cited 2025 and 2026 Kawasaki pages do not provide a price that can be placed beside Ducati’s displayed US MSRP. Obtain the current local MSRP, destination fee, documentation charge, taxes, registration, dealer-installed accessories, promotions and financing terms before calling the Z900 cheaper or better value. A lower advertised price can disappear once those items are added.
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Ducati lists a 24-month, unlimited-mileage warranty for both Streetfighter V4 versions. Its page shows different annual and oil-service schedules by trim, so confirm the interval and included work for the motorcycle you are ordering with a local dealer. The supplied Kawasaki material does not establish a comparable warranty or service schedule; request those terms in writing.
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Ownership cost also includes insurance, tires, brake components, fuel, scheduled maintenance, storage and financing. None of those costs can be responsibly ranked from the cited specifications alone. Get insurance quotes using the exact model year and your riding history before signing a purchase order.
Which bike suits each type of rider?
Choose the Ducati Streetfighter V4 when:
- You specifically want the highest published engine output in this comparison.
- You value a superbike-derived V4 and track-oriented chassis potential more than purchase price.
- You are prepared to pay premium-bike prices and verify dealer support, setup and service locally.
- You can use the performance responsibly and have the experience to manage a very powerful naked motorcycle.
Choose the V4 S when:
- You will make meaningful use of Öhlins Smart EC 3.0 electronic suspension.
- Forged wheels, the listed lower weight and lithium battery are worth the additional outlay to you.
- You want the Ducati package with the most advanced standard chassis equipment in the cited lineup.
Choose the Kawasaki Z900 when:
- An inline-four engine is the character you want, regardless of the Ducati’s higher published output.
- Cruise control, power modes, traction control, cornering management, ABS and a quick shifter are central to your road-riding brief.
- You want to make a decision after confirming a local price, warranty and service network rather than assuming a manufacturer’s MSRP.
- Your riding is primarily commuting, weekend roads and touring links where the listed electronic aids may be more useful than maximum output.
How to make an apples-to-apples buying decision
- Lock the model year and market. Write down the exact Ducati MY25 or Kawasaki 2025/2026 trim and country. Do not combine a 2026 equipment list with a 2025 price or specification.
- Request an itemized out-the-door quote. Include MSRP, destination, documentation, setup, taxes, registration, accessories and any finance charges. For Ducati, start with the displayed price and add the $1,295 destination charge plus the other exclusions identified on its page.
- Confirm equipment by VIN or build sheet. Ask whether the bike has the listed suspension, quick-shifter, cruise-control, cornering-management and battery equipment, and whether any item is optional in your region.
- Check physical fit. Sit on the motorcycle in riding boots, reach the controls, move it backward, and hold it upright at a stop. Verify seat height and weight definitions rather than relying on internet comparisons.
- Plan the use case. Estimate your split between commuting, highway travel, mountain roads and track days. Premium suspension is valuable only if your riding and setup make use of it.
- Ride both if possible. Compare throttle response, heat, clutch effort, gearbox feel, braking confidence, wind exposure and low-speed balance on the same route. Manufacturer specifications cannot answer those rider-specific questions.
- Price the first year. Obtain insurance, tire, service and registration estimates for the exact motorcycle. Include protective equipment and track consumables if the Ducati will be used on circuit.
- Read the warranty and service documents. Confirm who performs scheduled work, what is covered, the interval, roadside assistance and any regional exclusions before paying a deposit.
Common comparison mistakes
- Treating racing output as street output: the Ducati’s 226-hp figure belongs to the optional Ducati Performance by Akrapovič racing exhaust and track configuration, not the standard street trim.
- Comparing unlike weights: Ducati’s published weights exclude fuel. A Kawasaki number measured with fuel, accessories or a different standard is not an apples-to-apples comparison.
- Assuming model-year carryover: Kawasaki’s 2026 electronic package should not automatically be assigned to a 2025 Z900.
- Calling one cheaper without a quote: Kawasaki’s current local price is not supplied in the cited pages, while Ducati’s displayed US prices exclude several charges.
- Confusing equipment with test results: suspension type, IMU functions and engine layout do not establish acceleration, stopping distance, comfort or reliability.
- Ignoring rider fit: a motorcycle with impressive specifications can be tiring or intimidating if the seat, reach, controls or power delivery do not suit the rider.
Verdict: better for which priority?
The MY25 Ducati Streetfighter V4 is the stronger paper-performance choice and the more overtly premium platform. Its V4, superbike-derived configuration and available V4 S chassis equipment target riders who knowingly want exceptional performance and are willing to pay for it.
The Kawasaki Z900 deserves the nod when the decision centers on inline-four character, the listed road-focused electronic aids, personal fit and a locally verified ownership cost. The supplied evidence does not establish a Kawasaki price, independent reliability advantage or universal comfort advantage, so those conclusions require your dealer quote and test ride.
In practical terms, buy the Ducati for the performance mission; buy the Kawasaki when its engine character, equipment mix and verified local deal better match the roads you ride. Compare the same model year and market, then let fit, use and total cost—not a single horsepower figure—decide.
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