2023 Zero SR Technical Analysis & Specification Breakdown
Engineered by Zero for the naked motorcycle segment, the 2023 Zero SR features a purpose-built air-cooled electric configuration. In factory specification, peak output is rated at 74 HP (54 kW) at 6,255 rpm while maximum torque reaches 165.4 Nm (122 lb-ft), transferring power to the rear wheel through a 1-speed gearbox and belt final drive.
On the scales, the SR measures 222 kg (489 lbs) wet (curb), translating to a power-to-weight ratio of 0.33 HP/kg (3 kg per horsepower). Rider ergonomics and chassis geometry center around a 807 mm (31.8 in) seat height — offering a neutral standover height that accommodates most average-inseam riders without sacrificing cornering clearance, combined with a 1,410 mm (55.5 in) wheelbase engineered for quick, flickable steering geometry.
Within MotoLibrary's Zero archive, this model family spans 4 indexed model years from 2015 to 2023, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Power-to-Weight
0.33 HP/kg (3 kg/HP)
Standover Height
807 mm (31.8 in)
Engine
Engine TypeElectric
Engine DetailsEnhanced thermal efficiency, passively air-cooled, interior permanent magnet AC motor
Power74.0 HP (54.0 kW)) @ 6255 RPM
Torque165.4 Nm (16.9 kgf-m or 122.0 ft.lbs)
CoolingAir
Transmission
Gearbox1-speed
Final DriveBelt (final drive)
ClutchClutchless direct drive
Driveline90T / 20T, Poly Chain® HTD® Carbon™ belt
Performance
Top Speed167.0 km/h (103.8 mph)
0-100 km/h3.30 seconds
Emission DetailsNo direct emisssion.
Chassis
Frame TypeSteel trellis
Rake24.5°
Trail94 mm (3.7 inches)
Front SuspensionShowa 43mm Big Piston Separate Function forks, with adjustable spring preload, compression and rebound damping
Front Travel120 mm (4.7 inches)
Rear SuspensionShowa 40 mm piston, piggy-back reservoir shock with adjustable spring preload, compression and rebound damping
Rear Travel140 mm (5.5 inches)
Wheelbase1410 mm (55.5 inches)
Wheels & Brakes
Front Tyre120/70-17
Rear Tyre180/55-17
Front BrakesSingle disc. ABS. Floating discs. 4-piston calipers.
Use this page to compare this motorcycle by its real specifications, not only by model name. Focus on the details that affect fit, comfort, handling, range and ownership.
Power
Compare engine output with similar motorcycles if acceleration, highway use or two-up riding matters.
Torque
Torque is useful for judging real-world pull, especially for touring, commuting and loaded riding.
Seat Height
Check the seat height against your inseam and riding posture before choosing a motorcycle.
Brakes
Brake setup is worth comparing if you ride in traffic, mountains or with a passenger.
Suspension
Suspension details can matter for comfort, road feel and long-distance riding.
Transmission
Transmission and final drive affect maintenance, smoothness and everyday usability.
