All models
Street · 2014–2023Discontinued
Zero SR · Gen 2
Naked street performance
Gen 2· SDS · Z-Force (Cypher II)· 2014–2023
74
CV
166
Nm
167
km/h
15.6
kWh
3 kg/CVpower-to-weight (latest year)
Read the Zero SR owner's guide
Charging, ride modes, maintenance, warning lights & care — everything from the manual, in plain language.
The Zero SR spans more than one generation — a different platform, frame, suspension and drivetrain. You're viewing Gen 2 (2014–2023). Other generations:
Motor & performance
- Motor
- Z-Force 75-10 enhanced thermal efficiency, passively air-cooled, interior permanent magnet AC motor
- Peak power
- 55 kW / 74 CV
- Peak torque
- 166 Nm
- Top speed
- 167 km/h
- Power-to-weight
- 3 kg/CV
Battery & charging
- Capacity (max)
- 15.6 kWh
- Capacity (nominal)
- 13.7 kWh
- Chemistry
- Z-Force Li-Ion Intelligent Power Pack
- Onboard charger
- 3 kW
- Charge time
- 4.4 hours (100% charged) / 3.9 hours (95% charged)
Drivetrain & belt
- Belt
- 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: activates when the throttle is fully closed while the motorcycle is in motion, returning energy to the power pack; 900 amp 3-phase AC controller with regenerative deceleration; Regen/Torque meter displays regen level
Range (Zero figures)
- Combined
- 164 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)
- Front fork
- Showa 43 mm big piston, separate function 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)
- 120 / 140 mm
- Rake / trail
- 24.5 ° / 94 mm
- Wheelbase
- 1450 mm
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.
Brakes
- Front
- Dual J-Juan radial-mounted 4-piston calipers, 320 x 5 mm disc
- Rear
- J-Juan single piston floating caliper, 240 x 4.5 mm disc
- ABS
- Bosch Base MSC (ABS with motorcycle stability control)
Wheels & tyres
- Wheel type
- cast
- Front wheel / tyre
- 3.50 x17 / Pirelli Diablo Rosso III 120/70-17
- Rear wheel / tyre
- 5.50 x17 / Pirelli Diablo Rosso III 180/55-17
- Front pressure (cold)
- 36 psi (248 kPa)
- Rear pressure (cold)
- 36 psi (248 kPa)
Lighting
- Headlight
- LED
- Tail light
- LED (combined brake/tail)
- Turn signals
- RY10W (10W) incandescent, amber
Dimensions & weight
- Seat height
- 787 mm
- Curb weight
- 222 kg
Battery packs
The Z-Force packs offered on this bike across 2014–2023 — capacity, construction and weight on each pack's page.
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
ZF15.615.6 kWh
Monolith pack · 2022-2025
Fitted to the 2023 SR
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 SR — aggregated and anonymized from actual riding data, not 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.
| Part | As the manual describes it | On this model | Shared with |
|---|---|---|---|
| Motor | Z-Force 75-10 | 2022–2025 | 3 model lines |
| Front fork | Showa 43 mm big-piston separate-function | 2022–2025 | 4 model lines |
| Rear shock | Showa 40 mm piston piggy-back reservoir | 2015–2025 | 9 model lines |
| Front brake | J-Juan 4-piston radial-mounted (twin caliper) 320 x 5 mm disc | 2022–2025 | 7 model lines |
| Rear brake | J-Juan 1-piston 240 x 4.5 mm disc | 2015–2025 | 9 model lines |
| ABS / stability control | Bosch Base MSC | 2022–2025 | 4 model lines |
| Final drive belt | Gates Poly Chain HTD Carbon | 2017–2025 | 9 model lines |
| Front tyre | Pirelli Diablo Rosso III 120/70-17 | 2022–2025 | 4 model lines |
| Rear tyre | Pirelli Diablo Rosso III 180/55-17 | 2022–2025 | 4 model lines |
No catalogue row names the Zero SR for MY2023 directly. Parts fitted to it may still be listed under a platform token, which this page will not expand for you — browse the part index instead.
Maintenance & parts
From the official Zero owner & service manuals.
Consumables & wear parts
- Drive belt
- Poly Chain HTD Carbon belt (90T / 20T)
- Brake fluid
- DOT 4
- Front tyre
- Pirelli Diablo Rosso III 120/70-17
- Rear tyre
- Pirelli Diablo Rosso III 180/55-17
- Headlight
- LED
- Tail light
- LED (combined brake/tail)
- Turn signals
- RY10W (10W) incandescent, amber
Drive belt service
- Tension target
- MY2014–2021 (SDS platform): 42.5–73.6 Hz — Gates Carbon Drive, 11 mm pitch, Tension Tester 25–76.5 kg. MY2022 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
- 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 monthsreplace 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
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 km160 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 kmEvery 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
Model year evolution
Pick a year to put it head to head with another bike — charging, range and what a replacement battery costs.
| Year | CV | Nm | km/h | kWh | kg | kg/CV | Belt |
|---|---|---|---|---|---|---|---|
| 2023 | 74 | 166 | 167 | 15.6 | 222 | 3 | 90T / 20T |
| 2022 | 74 | 166 | 167 | 14.4 | 222 | 3 | 90T / 20T |
| 2021 | 69 | 146 | 163 | 14.4 | 188 | 2.72 | 90T / 20T |
| 2020 | 69 | 146 | 163 | 14.4 | 188 | 2.72 | 90T / 20T |
| 2019 | 69 | 146 | 164 | 14.4 | 188 | 2.72 | 90T / 20T |
| 2018 | 69 | 146 | 164 | 14.4 | 188 | 2.72 | 90T / 20T |
| 2017 | 69 | 146 | 164 | 13 | 188 | 2.72 | 90T / 20T |
| 2016 | 67 | 144 | 164 | 13 | 188 | 2.81 | 130T / 30T |
| 2015 | 67 | 144 | 164 | 13.6 | 188 | 2.81 | 132T / 30T |
| 2014 | 67 | 144 | 164 | 14.2 | 205 | 3.06 | 132T / 30T |
Specifications extracted from the official Zero Motorcycles owner & service manuals (EU / metric figures). Values are for guidance — always confirm against your bike's manual.