Street · 2014–2023Discontinued

Zero S · Gen 2

Naked street commuter

Gen 2· SDS · Z-Force (Cypher II)· 2014–2023

109

139

km/h

14.4

kWh

3.14 kg/CVpower-to-weight (latest year)

Read the Zero S owner's guide

Charging, ride modes, maintenance, warning lights & care — everything from the manual, in plain language.

The Zero S spans more than one generation — a different platform, frame, suspension and drivetrain. You're viewing Gen 2 (2014–2023). Other generations:

Gen 3· FST · Cypher III· 2024–present

Motor & performance

Motor: Z-Force 75-7 passively air-cooled, high-efficiency magnet, brushless motor; radial flux interior permanent; High efficiency, 550 amp, 3-phase brushless controller with regenerative deceleration
Peak power: 44 kW / 59 CV
Peak torque: 109 Nm
Top speed: 139 km/h
Power-to-weight: 3.14 kg/CV

Battery & charging

Capacity (max): 14.4 kWh
Capacity (nominal): 12.6 kWh
Chemistry: Lithium-Ion (Z-Force Li-Ion Intelligent Power Pack)
Onboard charger: 1.3 kW
Charge time: 9.8 hours (100% charged) / 9.3 hours (95% charged)

Drivetrain & belt

Belt: Gates Carbon Drive, Poly Chain HTD Carbon belt
Sprocket / pulley (corona/pignone): 90T / 20T
Final drive ratio: 90T/20T
Belt part number: — (see dealer parts catalog)
Transmission: Clutchless Direct Drive
Regen braking: Off-throttle regenerative braking (controller regenerative deceleration); engages when throttle is fully closed, felt as a slight drag; hold throttle just off closed to coast without regen

Range (Zero figures)

Combined: 200 km

Chassis & suspension

Platform / generation: SDS · Z-Force (Cypher II) (Gen 2)
Front fork: Showa 41 mm inverted cartridge forks, with adjustable spring preload, compression, and rebound damping
Rear shock (mono): Showa 40 mm piston, piggy-back reservoir shock with adjustable spring preload, compression, and rebound damping
Suspension travel (f/r): 159 / 161 mm
Rake / trail: 24 ° / 80 mm
Wheelbase: 1410 mm

Brakes

Front: Bosch Gen 9 ABS, J-Juan asymmetric dual piston floating caliper, 320 mm OD x 5 mm thick disc
Rear: Bosch Gen 9 ABS, J-Juan single piston floating caliper, 240 mm OD x 4.5 mm thick disc
ABS: Bosch Gen 9 ABS

Wheels & tyres

Wheel type: cast
Front wheel / tyre: 3.00 x 17 / Pirelli Diablo Rosso II 110/70-17
Rear wheel / tyre: 3.50 x 17 / Pirelli Diablo Rosso II 140/70-17
Front pressure (cold): 32 PSI (221 kPa)
Rear pressure (cold): 34 PSI (234 kPa)

Lighting

Headlight: H4 halogen, 55/60W
Tail light: LED (combined brake/tail)
Turn signals: Replaceable bulb (Turn Signal Light Bulb, non-LED)

Dimensions & weight

Seat height: 807 mm
Curb weight: 185 kg

Real-world data

Real-world figures for the Zero S — aggregated and anonymized from actual riding data, not brochure numbers.

Maintenance & parts

From the official Zero owner & service manuals.

Consumables & wear parts

Drive belt: Gates Carbon Drive, Poly Chain HTD Carbon belt (90T / 20T)
Brake fluid: DOT 4
Front tyre: Pirelli Diablo Rosso II 110/70-17
Rear tyre: Pirelli Diablo Rosso II 140/70-17
Headlight: H4 halogen, 55/60W
Tail light: LED (combined brake/tail)
Turn signals: Replaceable bulb (Turn Signal Light Bulb, non-LED)

Drive belt service

Tension target: 62–82 Hz
Inspect / adjust: Every 8,000 mi (13,000 km) or 12 months
Replace: Every 24,000 mi (37,000 km)
First / break-in service: Initial 100 mi (160 km)
Belt part number: — (dealer parts catalog)

Key torque specs

Rear axle nut: 75 lb·ft (102 Nm)
Belt tension adjustment bolts: 4 lb-ft (5 Nm)
Power pack to frame bolts (left/right side): 26 lb-ft (35 Nm)
Brake hose banjo bolt: 20 lb-ft (27 Nm)
Power pack ground strap bolt: 5 lb-ft (7 Nm)

Service schedule

Initial 100 mi (160 km)
drive belt tension, front brake lever pivot, throttle grip, kickstand pivots/switch, drive motor commissioning
Initial 600 mi (1,000 km)
wheel bearings, drive belt tension, steering bearings, front brake lever pivot, kickstand switch, drive motor commissioning
Every 8,000 mi (13,000 km) or 12 months
replace brake fluid, wheels run-out, wheel bearings, drive belt tension, steering bearings, chassis fasteners
Every 16,000 mi (25,000 km)
repack steering bearings with grease
Every 24,000 mi (37,000 km)
replace drive belt, swingarm pivot bearings

Model year evolution

Year	CV	Nm	km/h	kWh	kg	kg/CV	Belt
2023	59	109	139	14.4	185	3.14	90T / 20T
2022	59	109	139	14.4	185	3.14	90T / 20T
2021	59	109	139	14.4	185	3.14	90T / 20T
2020	60	110	153	14.4	185	3.08	90T / 20T
2019	60	110	153	14.4	185	3.08	90T / 20T
2018	60	110	153	14.4	185	3.08	90T / 20T
2017	60	110	158	13	185	3.08	130T / 28T
2016	54	92	153	13	185	3.43	130T / 28T
2015	54	92	158	12.5	185	3.43	132T / 28T
2014	54	92	153	11.4	181	3.35	132T / 28T

Compare with other models Back to catalog

Specifications extracted from the official Zero Motorcycles owner & service manuals (EU / metric figures). Values are for guidance — always confirm against your bike's manual.