2021Zero SR

36 fields on record

The 2021 Zero SR is an electric streetfighter with instant torque and almost no maintenance. Its motor makes a peak 70 hp and 157 Nm through a belt drive with no gears, for a top speed of about 164 km/h. A 12.5 kWh battery gives a claimed range of up to 359 km.

Capacity: Not on record
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Engine: Not on record
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Gearbox: Not on record
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Wet weight: 188.0 kg
Seat height: 807 mm
Power: 70.0 HP (51.1 kW) @ 3500 RPM

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How it rides

Editorial estimate from the spec sheet - not lab tested

Off-road & trail15%

Cornering82%

City riding88%

Daily riding75%

Touring35%

Two-up45%

Track55%

Best for: Built for punchy, silent urban and back-road riding where instant torque and light weight make for playful, quick acceleration off the line.
Built for: A quiet, torquey electric sportbike that trades a traditional engine note and long range for instant, linear acceleration and low maintenance.
Not ideal for: Not ideal for riders planning long highway touring days or off-road adventures, given the limited range and street-focused chassis.

Scores are derived from the spec sheet using the same model across every bike, so they compare like for like.

Will it fit you?

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Your height

Inseam (optional)

Units

At 807mm, a rider of 68.9" with a 31" (estimated) inseam will reach the ground with both feet flat on the 2021 Zero SR, with a relaxed knee angle of around 120 degrees and a forward-leaning riding position.

Assumes about 30mm of suspension sag once seated. This is an approximation from category-typical geometry, not a measurement of this bike or of you - sit on one before you buy.

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Range and charging costs

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Units

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Fuel per litre

Riding a year

Based on the maker's claimed range and battery size. Real-world figures depend on how and where you ride, speed and temperature. Prices shown greyed are examples - type your own.

Full specifications

Engine

Power: 70.0 HP (51.1 kW) @ 3500 RPM
Torque: 157.0 Nm (16.0 kgf-m)
Power/weight ratio: 0.3723 HP/kg (wet)
Cooling system: Air
Starting: Electric
Battery Capacity: 12.5 kWh
Motor Type: Radial flux, permanent high-temp magnet, brushless motor
Range: 359 km (223 miles)
Peak Power: 52.0 kW (69.7 hp)
Charge Time: 12.1 hours
Capacity:: Not on record - add it

Transmission

Transmission type: Automatic
Final drive: Belt
Clutch: Clutchless direct drive

Performance

Top speed: 164.0 km/h (101.9 mph)

Dimensions & weight

Wheelbase: 1410 mm
Seat height: 807 mm
Wet weight: 188.0 kg
Dry weight: Not on record - add it

Chassis & suspension

Frame: Steel trellis
Front suspension: Showa 41 mm inverted cartridge forks, with adjustable spring preload, compression and rebound damping
Rear suspension: Showa 40 mm piston, piggy-back reservoir shock with adjustable spring preload, compression and rebound damping
Front wheel travel: 120 mm
Rear wheel travel: 140 mm
Rake (fork angle): 24.0°
Trail: 80 mm

Brakes & wheels

Front brakes: Single disc. ABS. Floating discs. Two-piston calipers.
Front brakes diameter: 313 mm
Rear brakes: Single disc. ABS. Single-piston caliper.
Rear brakes diameter: 240 mm
ABS: Yes
Front tyre: 110/70-17
Rear tyre: 140/70-17

Other

Color options: Red, black, yelloBlack Metallic
Warranty: 24
Comments: Listed power is the peak figure; the maker did not publish a continuous rating for this year.
Comments: Range up to 223 miles. 12.1hour charging. Lithium Ion 12.5 kWh battery. Various battery options called ZF14.4.0 and ZF14.4 + Power Tank.

Specs last verified against published sources: October 2026.