Zero SR/F [2019-2021]: The Electric Revolution Refined
Introduction
The Zero SR/F isn’t just another electric motorcycle—it’s a statement. As the flagship model of Zero Motorcycles’ lineup from 2019 to 2021, the SR/F redefined expectations for electric performance, blending visceral acceleration with smart technology and surprisingly practical range. This review dives into what makes the SR/F a benchmark in the electric motorcycle era, written as if we’ve just returned from a spirited ride on winding roads and bustling city streets.
Design & Ergonomics: Futuristic Aggression Meets Approachable Comfort
The SR/F’s design is a masterclass in balancing futuristic aesthetics with functional ergonomics. Its angular bodywork, exposed lattice frame, and minimalist lighting give it a cyberpunk edge, while the sculpted seat and narrow mid-section ensure accessibility for riders of varying heights.
Key Design Features:
- Seat Height: At 787 mm (31.0 inches), the SR/F accommodates shorter riders without sacrificing ground clearance. Optional low (770 mm / 30.3 in) and tall (810 mm / 31.9 in) seats add versatility.
- Weight Distribution: Despite its 220 kg (485 lbs) curb weight, the SR/F’s battery placement creates a low center of gravity, making it feel surprisingly nimble at low speeds.
- Premium Touches: The Premium model adds a fly screen, heated grips, and aluminum bar ends—subtle upgrades that enhance both style and comfort.
The bike’s digital dashboard is clean and intuitive, displaying speed, battery status, and ride mode adjustments. While some riders might miss the analog charm of traditional gauges, the SR/F’s interface feels purpose-built for its tech-forward ethos.
Performance: Instant Torque, Uninterrupted Thrills
Electric motorcycles excel at delivering power without hesitation, and the SR/F takes this to new heights. Its Z-Force 75-10 motor produces 110 HP (82 kW) and a jaw-dropping 190 Nm (140 ft-lbs) of torque—figures that embarrass many liter-class ICE bikes.
Acceleration & Speed:
- 0-100 km/h (0-62 mph): 3.3 seconds—comparable to a superbike.
- Top Speed: A sustained 177 km/h (110 mph) with bursts up to 200 km/h (124 mph).
On the road, the SR/F feels like a coiled spring. Twist the throttle, and the bike surges forward with a linear, silent thrust that’s addictive. The absence of gears or a clutch means power delivery is seamless, perfect for carving through traffic or attacking twisty backroads.
Handling & Suspension:
- Front Suspension: Showa 43 mm Big Piston forks with adjustable preload, compression, and rebound damping.
- Rear Suspension: Showa piggy-back reservoir shock, fully adjustable.
- Wheel Travel: 120 mm (4.7 in) front / 140 mm (5.5 in) rear.
The suspension strikes a balance between sporty precision and compliance, absorbing bumps while maintaining feedback. Paired with Pirelli Diablo Rosso III tires, the SR/F leans confidently into corners, though its weight becomes noticeable during aggressive transitions.
Technology: Cypher III & Smart Connectivity
The SR/F’s true innovation lies in its software. The Cypher III operating system integrates with Zero’s mobile app, enabling features like: - Custom Ride Modes: Adjust throttle response, regen braking, and torque curves. - Range Optimization: Real-time calculations based on riding style and terrain. - Over-the-Air Updates: Future-proofing the bike with performance tweaks and new features.
Bosch’s Motorcycle Stability Control (MSC) adds another layer of safety with cornering-aware ABS and traction control—a rarity in electric bikes at its launch.
Charging & Range:
- Battery Capacity: 14.4 kWh (12.6 kWh nominal).
- Range: Up to 259 km (161 miles) in city riding; 132 km (82 miles) at highway speeds.
- Charging: The Premium model’s 6 kW charger refills the battery in 2.5 hours (100%), while the Standard model takes 4.5 hours.
Range anxiety fades quickly; the SR/F’s estimates are conservative, and regen braking adds miles during deceleration.
Competition: How the SR/F Stacks Up
1. Energica Eva Ribelle
- Pros: Faster charging (DC fast charging), higher top speed (241 km/h / 150 mph).
- Cons: Heavier (260 kg / 573 lbs), less polished software.
2. Harley-Davidson LiveWire
- Pros: Premium build quality, iconic brand cachet.
- Cons: Shorter range (146 km / 90 miles), higher price.
3. Yamaha MT-09 (ICE Comparison)
- Pros: Lighter (193 kg / 425 lbs), raucous triple-cylinder engine.
- Cons: No electric torque, higher maintenance costs.
The SR/F’s blend of performance, tech, and usability makes it a standout—especially for riders prioritizing innovation over tradition.
Maintenance: Keeping Your SR/F in Peak Condition
Electric motorcycles simplify maintenance, but the SR/F still benefits from periodic care:
Key Areas:
- Belt Drive: Inspect the Poly Chain HTD Carbon belt every 16,000 km (10,000 miles) for wear. MOTOPARTS.store offers premium replacement belts.
- Brakes: Bosch radial calipers provide stellar stopping power, but pads wear faster under aggressive regen settings. Upgrade to sintered pads for longevity.
- Suspension: Rebuild Showa components every 32,000 km (20,000 miles). Consider MOTOPARTS’ tuning kits for track-focused setups.
- Tires: The Pirelli Diablo Rosso IIIs are sticky but wear quickly. Swap to Michelin Road 5s for better mileage.
Recommended Upgrades:
- Quickstrike Kit: Add carbon fiber fenders and Barracuda lever guards for race-inspired flair.
- Heated Grips: A must for cold-weather riders (standard on Premium models).
- Aftermarket Chargers: Reduce downtime with portable charging solutions.
Final Thoughts: The Electric Future, Today
The Zero SR/F isn’t just a motorcycle—it’s a gateway to a new era of riding. Its combination of brutal acceleration, smart tech, and surprising practicality makes it a compelling choice for both EV converts and curious traditionalists. While it can’t replicate the visceral roar of an ICE engine, it compensates with a futuristic driving experience that grows on you like a favorite playlist.
For riders seeking cutting-edge performance with minimal upkeep, the SR/F remains a benchmark. And when it’s time to customize or maintain your machine, MOTOPARTS.store has the expertise and parts to keep your electric revolution rolling.
Specifications sheet
| Motor | |
|---|---|
| Type: | Z-Force 75-10 enhanced thermal efficiency, passively air-cooled, interior permanent magnet AC motor |
| Max power: | 82 kW | 110.0 hp |
| Controller: | High efficiency 900 Amp, 3-phase AC controller with regenerative deceleration |
| Max torque: | 190 Nm |
| Max power @: | 5000 rpm |
| Cooling system: | Air |
| Battery | |
|---|---|
| Type: | Z-Force Li-Ion intelligent integrated |
| Charger type: | 3.0 kW integrated (Standard), 6.0 kW integrated (Premium) |
| Max capacity: | 14.4 kWh |
| Nominal capacity: | 12.6 kWh |
| Charge time (rapid): | 1.8 hours (100% charged) with 6 kW charger |
| Charge time (standard): | 4.5 hours (100% charged) |
| Dimensions | |
|---|---|
| Wheelbase: | 1450 mm (57.1 in) |
| Wet weight: | 220 |
| Seat height: | 787 mm (31.0 in) [adjustable 770–810 mm with accessories] |
| Ground clearance: | 140 mm (5.5 in) |
| Carrying capacity: | 234 kg (515 lbs) |
| Fuel tank capacity: | N/A (Electric) |
| Drivetrain | |
|---|---|
| Belt type: | Poly Chain HTD Carbon |
| Final drive: | belt |
| Transmission: | Clutchless direct drive |
| Rear sprocket: | 90 |
| Front sprocket: | 20 |
| Maintenance | |
|---|---|
| Rear tire: | 180/55-17 (pi-elli diablo -osso iii) |
| Front tire: | 120/70-17 (pi-elli diablo -osso iii) |
| Brake fluid: | DOT 4 |
| Valve clearance check interval: | Not applicable (Electric motor) |
| Recommended tire pressure (rear): | 2.5 bar (36 psi) solo, 2.8 bar (41 psi) with passenger |
| Recommended tire pressure (front): | 2.25 bar (33 psi) |
| Performance | |
|---|---|
| Top speed: | 200 km/h (124 mph) |
| 0-100 km/h: | 3.3 seconds |
| Range (city): | 259 km (161 miles) |
| Range (highway): | 132 km (82 mph) |
| Additional Features | |
|---|---|
| Instruments: | Digital dash with Cypher III OS connectivity |
| Color options: | Red, Grey (Standard); Limited Edition Quickstrike kit with carbon-fiber parts |
| Factory warranty: | 24 months |
| Chassis and Suspension | |
|---|---|
| Rake: | 24.5° |
| Frame: | Tubular lattice frame |
| Trail: | 94 mm (3.7 in) |
| Rear brakes: | Single 240 mm disc, Bosch MSC with 1-piston caliper (ABS) |
| Front brakes: | Dual 320 mm discs, Bosch MSC with radial 4-piston calipers (ABS) |
| Rear suspension: | Showa 40 mm piston piggy-back reservoir shock, adjustable preload, compression, rebound damping |
| Front suspension: | Showa 43 mm Big Piston Separate Function forks, adjustable preload, compression, rebound damping |
| Rear wheel travel: | 140 mm (5.51 in) |
| Front wheel travel: | 120 mm (4.72 in) |
