Yamaha FZ-S 25 [2019-2021] Review: The Streetfighter with Substance

Introduction

The Yamaha FZ-S 25, produced between 2019 and 2021, represents Yamaha’s commitment to delivering accessible performance in the 250cc naked bike segment. Designed primarily for Asian markets like India, this motorcycle strikes a balance between urban agility and highway capability. After spending a week with this machine, it’s clear that Yamaha aimed to create a bike that feels equally at home weaving through traffic and carving open roads. Let’s break down what makes this generation of the FZ-S 25 stand out—and where it leaves room for customization.

---

Design & Ergonomics: Aggressive Looks Meet Practical Comfort

The FZ-S 25’s design is a masterclass in streetfighter aesthetics. With its sharp LED headlight (a standout feature in later models), muscular fuel tank shrouds, and minimalist tail section, it looks ready to pounce even at a standstill. The color options—Metallic Black, Racing Blue, and Dark Matt Blue—give it a premium feel, though the Matte Red and Vintage Green variants add a retro-modern twist for riders seeking individuality.

Ergonomics are where this bike shines. The 795 mm (31.3-inch) seat height accommodates riders of varying statures, and the slightly rear-set footpegs offer a natural knee bend. The handlebars are wide enough for leverage but not so broad that they feel cumbersome. After a 2-hour ride through mixed terrain, fatigue was minimal—a testament to Yamaha’s focus on rider comfort. The 14-liter (3.7-gallon) fuel tank ensures fewer pit stops, making it ideal for daily commutes and weekend escapes.

---

Engine & Performance: Punchy Single-Cylinder Thrills

At the heart of the FZ-S 25 lies a 249cc air-cooled, single-cylinder engine producing 20.8 HP at 8,000 RPM and 20.1 Nm (14.8 ft.lbs) of torque at 6,000 RPM. While these numbers might seem modest, the engine’s character is anything but.

Low-to-mid-range grunt is this mill’s forte. From 3,000 RPM onward, the bike pulls eagerly, making overtaking in city traffic a breeze. The 5-speed gearbox is slick, though the clutch lever feels slightly heavy in stop-and-go conditions. On highways, the engine settles comfortably at 80–90 km/h (50–56 mph), but vibrations start creeping into the handlebars past 100 km/h (62 mph). A weighted bar end or aftermarket grips (available at MOTOPARTS.store) could mitigate this.

Fuel injection ensures crisp throttle response, a noticeable upgrade from carbureted rivals. The exhaust note is muted—a pro for urban stealth but a con for enthusiasts. Swapping the stock muffler for a free-flowing slip-on could unlock a throatier sound without compromising emissions compliance.

---

Handling & Suspension: Confidence in the Corners

Yamaha’s diamond-type frame provides a rigid yet forgiving foundation. Combined with a 26-degree rake and 101 mm (4-inch) trail, the FZ-S 25 feels nimble at low speeds and stable at higher velocities.

The telescopic front fork and monocross rear suspension are tuned for comfort, absorbing potholes and speed bumps with ease. However, aggressive riders might find the setup too soft for hard cornering. Upgrading to adjustable rear shocks (we recommend checking our catalog for Öhlins alternatives) could sharpen the handling.

Braking performance is adequate, with a 282 mm front disc and 220 mm rear disc offering decent bite. ABS is conspicuously absent, though—a glaring omission in this segment. Riders prioritizing safety should consider adding aftermarket ABS modules or high-performance brake pads.

---

Competition: How Does It Stack Up?

The FZ-S 25 faces stiff competition in Asia’s 250cc naked bike arena:

1. Bajaj Pulsar NS200:
2. Pros: 199.5cc liquid-cooled engine, 6-speed gearbox, lighter at 145 kg (320 lbs).
3. Cons: Carbureted fuel system feels outdated, harsh ride quality.

4. Verdict: The NS200 is sportier but less refined. The FZ-S 25’s fuel injection and ergonomics make it better suited for daily riding.

5. Suzuki Gixxer SF 250:

6. Pros: Sleeker full-fairing design, oil-cooled engine, slightly higher torque (22.2 Nm).
7. Cons: Cramped riding posture, smaller 12-liter fuel tank.

8. Verdict: The Gixxer is a highway-focused alternative, but the FZ-S 25’s versatility wins for mixed usage.

9. KTM 200 Duke:

10. Pros: 199.5cc liquid-cooled engine, premium WP suspension, aggressive styling.
11. Cons: Higher maintenance costs, firm seat.
12. Verdict: The Duke appeals to thrill-seekers, but the FZ-S 25 offers better value for practicality.

---

Maintenance: Keeping Your FZ-S 25 in Prime Shape

Owners of the FZ-S 25 praise its reliability, but a proactive maintenance routine is key to longevity:

1. Oil Changes:
   Yamaha recommends 10W40 mineral oil every 3,000–4,000 km (1,864–2,485 miles). Synthetic blends (available in our store) can extend intervals to 5,000 km (3,106 miles).

2. Chain Care:
   The O-ring chain requires regular cleaning and lubrication. Use MOTOPARTS.store’s high-adhesion chain lube to reduce wear.

3. Valve Adjustments:
   Check valve clearances every 10,000 km (6,213 miles). The SOHC design simplifies this job, but a professional toolkit (like our 32-piece mechanic set) ensures precision.

4. Air Filter:
   Replace the paper filter every 12,000 km (7,456 miles). Upgrading to a washable foam filter improves airflow and reduces long-term costs.

5. Cooling System:
   Despite being air-cooled, ensure the engine fins stay debris-free. Consider adding an aftermarket oil cooler for extreme climates.

---

Conclusion: A Canvas for Personalization

The Yamaha FZ-S 25 is more than just transportation—it’s a platform for self-expression. While it excels as a stock machine, its true potential unlocks with thoughtful upgrades. Whether you’re bolting on crash guards for touring, installing a quickshifter for sportier rides, or swapping the seat for premium upholstery, MOTOPARTS.store has the components to make your FZ-S 25 uniquely yours.

Yamaha’s engineering provides the foundation; your creativity builds the legacy.

---

Specifications sheet

---