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Zero S
Street · 2014–2023Discontinued

Zero S · Gen 2

Naked street commuter

Gen 2· SDS · Z-Force (Cypher II)· 2014–2023
59
CV
109
Nm
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, each with 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
These are Zero's own figures at their own test speeds. What you get depends on how fast you ride, what you carry, the weather and the hills. Work it out for this bike.

Chassis & suspension

Model generation
SDS · Z-Force (Cypher II) (Gen 2)
Zero's platform generation for the machine itself, a different axis from the log-format generation our parser reports. The two do not always match: a bike's diagnostic files can decode as a different generation than its platform number.
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
3.00 x 17
Rear wheel
3.50 x 17
Original tyres, from Zero’s owner manual

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

Battery packs

The Z-Force packs offered on this bike across 2014–2023. Capacity, construction and weight are on each pack's page.

ZF7.27.2 kWh

Modular brick · 2018-2023

ZF8.58.5 kWh

Monolith pack · 2013-2014

ZF9.49.4 kWh

Monolith pack · 2015

ZF9.89.8 kWh

Monolith pack · 2016

ZF11.411.4 kWh

Monolith pack · 2013-2014

ZF12.512.5 kWh

Monolith pack · 2015

ZF13.013 kWh

Monolith pack · 2016-2017

ZF14.414.4 kWh

Monolith pack · 2018-2021

Fitted to the 2023 S

Power Tank (2.8 kWh)2.8 kWh

Power Tank · Add-on · 2014-2017

Power Tank ZF3.63.6 kWh

Power Tank · Add-on · 2018-2025

Real-world data

Real-world figures for the Zero S, aggregated and anonymized from actual riding data rather than brochure numbers.

Components, MY2023

What Zero’s own manual specifies for this exact model year, and how widely each part was shared across the range. Every row names the manual behind it.

PartAs the manual describes itOn this modelShared with
MotorZ-Force 75-72014–20263 model lines
Motor controller3-phase brushless controller, 550 Athe manual gives the dimension and names no maker2018–20234 model lines
Front forkShowa 41 mm inverted cartridge2015–20237 model lines
Rear shockShowa 40 mm piston piggy-back reservoir2015–20269 model lines
Front brakeJ-Juan 2-piston 320 x 5 mm disc2015–20236 model lines
Rear brakeJ-Juan 1-piston 240 x 4.5 mm disc2014–20269 model lines
ABS / stability controlBosch Gen 92015–20237 model lines
Final drive beltGates Poly Chain HTD Carbon2019–20269 model lines
Front tyrePirelli Diablo Rosso II 110/70-172017–20232 model lines
Rear tyrePirelli Diablo Rosso II 140/70-172017–20232 model lines

Your manual gives one wear limit you can measure yourself: replace the brake pads at 0.053 in (1.35 mm) or less (p.84).

No catalogue row names the Zero S for MY2023 directly. Parts fitted to it may still be listed under a platform token, which this page will not expand for you, so browse the part index instead.

How this compares across the rangePart numbersExploded diagrams for this year

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
MY2014–2023 (SDS platform): 42.5–73.6 Hz — Gates Carbon Drive, 11 mm pitch, Tension Tester 25–76.5 kg. MY2024 onwards (FST platform): 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

  1. Initial 100 mi (160 km)
    drive belt tension, front brake lever pivot, throttle grip, kickstand pivots/switch, drive motor commissioning
  2. Initial 600 mi (1,000 km)
    wheel bearings, drive belt tension, steering bearings, front brake lever pivot, kickstand switch, drive motor commissioning
  3. 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
  4. Every 16,000 mi (25,000 km)
    repack steering bearings with grease
  5. Every 24,000 mi (37,000 km)
    replace drive belt, swingarm pivot bearings

Service timeline

Every occurrence of every interval, from Zero's S_SR-SRF_Service_Manual_8811935-AJ.pdf, page 13.

Break-in

Own scale: these all happen in the first 1k km
160 km
drive belt tension, front brake lever pivot, throttle grip, kickstand pivots/switch, drive motor commissioning
1k km
wheel bearings, drive belt tension, steering bearings, front brake lever pivot, kickstand switch, drive motor commissioning

Recurring

Every mark is one occurrence, to 40k km
Every 13k kmor 12 months, whichever first

replace brake fluid, wheels run-out, wheel bearings, drive belt tension, steering bearings, chassis fasteners

Every 25k km

repack steering bearings with grease

Every 37k km

replace drive belt, swingarm pivot bearings

08k16k24k32k40k
Every model's schedule What that noise means Drive belt tension & alignment Every torque by model year

Model year evolution

Pick a year to put it head to head with another bike on charging, range and what a replacement battery costs.

YearCVNmkm/hkWhkgkg/CVBelt
20235910913914.41853.1490T / 20T
20225910913914.41853.1490T / 20T
20215910913914.41853.1490T / 20T
20206011015314.41853.0890T / 20T
20196011015314.41853.0890T / 20T
20186011015314.41853.0890T / 20T
201760110158131853.08130T / 28T
20165492153131853.43130T / 28T
2015549215812.51853.43132T / 28T
2014549215311.41813.35132T / 28T
Compare the 2023 S with another bike Table of every model 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.