Naked Motorcycles

2018Zero SR

29 fields on record

The 2018 Zero SR is an electric naked bike for riders who want strong, instant performance without a petrol engine. Its motor delivers 144 Nm through a direct belt drive, for a top speed of about 164 km/h and a range of up to 137 miles. ABS, an 808 mm seat and a 222 kg weight complete the package.

Capacity: Not on record
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Engine: Not on record
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Gearbox: Not on record
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Dry weight: 188.0 kg
Seat height: 808 mm
Power: 67.0 HP (48.9 kW) @ 4000 RPM

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What’s new for the 2018 Zero SR

vs the 2017

Spec	2017	2018
Power	29.5 HP (22.0 kW) @ 4300 RPM	67.0 HP (48.9 kW) @ 4000 RPM

Other years 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024

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 808mm, a rider of 68.9" with a 31" (estimated) inseam will reach the ground with both feet flat on the 2018 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.

More bikes at 751-820 mm — Middle Ground →

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Full specifications

Engine

Power: 67.0 HP (48.9 kW) @ 4000 RPM
Torque: 144.0 Nm (14.7 kgf-m)
Power/weight ratio: 0.3564 HP/kg (dry)
Cooling system: Air
Starting: Electric
Peak Power: 52.0 kW (69.7 hp)
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: 808 mm
Dry weight: 188.0 kg
Wet weight: 222.0 kg

Chassis & suspension

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
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, yellow
Warranty: 24
Comments: Range up to 137 miles. 7.9 hour charging. Lithium Ion 12.5 kWh battery. Various battery options called ZF13.0 and ZF13.0 + Power Tank. Listed power is the peak figure; the maker did not publish a continuous rating for this year.

Specs last verified against published sources: October 2026.