2025 Zero S Technical Analysis & Specification Breakdown
Engineered by Zero for the naked motorcycle segment, the 2025 Zero S features a purpose-built air-cooled electric configuration. In factory specification, peak output is rated at 68 HP (49.6 kW) at 4,300 rpm while maximum torque reaches 131.5 Nm (97 lb-ft), transferring power to the rear wheel through a automatic gearbox and belt final drive.
On the scales, the S measures 223 kg (492 lbs) wet (curb), translating to a power-to-weight ratio of 0.3 HP/kg (3.28 kg per horsepower). Rider ergonomics and chassis geometry center around a 787 mm (31 in) seat height — offering a neutral standover height that accommodates most average-inseam riders without sacrificing cornering clearance, combined with a 1,450 mm (57.1 in) wheelbase engineered for balanced agility and highway composure.
Within MotoLibrary's Zero archive, this model family spans 4 indexed model years from 2019 to 2025, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Power-to-Weight
0.3 HP/kg (3.28 kg/HP)
Standover Height
787 mm (31 in)
Engine
Engine TypeElectric
Engine DetailsZ-Force 75-7 motor
Power68.0 HP (49.6 kW)) @ 4300 RPM
Torque131.5 Nm (13.4 kgf-m or 97.0 ft.lbs)
CoolingAir
Transmission
GearboxAutomatic
Final DriveBelt (final drive)
ClutchClutchless direct drive
Driveline90T / 18T, Gates Poly Chain® HTD® Carbon™ belt
Performance
Top Speed167.4 km/h (104.0 mph)
0-100 km/h4.80 seconds
Chassis
Rake24.5°
Trail94 mm (3.7 inches)
Front SuspensionShowa 41 mm inverted cartridge 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)
Wheelbase1450 mm (57.1 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.
