Supermoto · 2016–2021Discontinued

Zero FXS

Street supermoto

Gen 1· XMX · modular· 2016–2021

106

132

km/h

7.2

kWh

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

Read the Zero FXS owner's guide

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

Motor & performance

Motor: Z-Force 75-5 passively air-cooled, high-efficiency magnet, brushless motor
Peak power: 33 kW / 44 CV
Peak torque: 106 Nm
Top speed: 132 km/h
Power-to-weight: 3.02 kg/CV

Battery & charging

Capacity (max): 7.2 kWh
Capacity (nominal): 6.3 kWh
Chemistry: Z-Force Li-Ion Intelligent Modular
Onboard charger: 0.65 kW
Charge time: 9.7 hours (100% charged) / 9.2 hours (95% charged)

Drivetrain & belt

Belt: Poly Chain HTD Carbon belt
Sprocket / pulley (corona/pignone): 90T / 18T
Final drive ratio: 90T/18T
Belt part number: — (see dealer parts catalog)
Transmission: Clutchless Direct Drive
Regen braking: Off-throttle regenerative deceleration: releasing the throttle begins regenerative braking, feeding energy back into the power pack; a slight drag is felt when active. To coast without regen, hold the throttle just off the fully closed position. Controller provides regenerative deceleration.

Range (Zero figures)

Combined: 106 km

Chassis & suspension

Platform / generation: XMX · modular (Gen 1)
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): 178 / 227 mm
Rake / trail: 24.4 ° / 71 mm
Wheelbase: 1422 mm

Brakes

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

Wheels & tyres

Wheel type: cast
Front wheel / tyre: 3.00 x 17 in / Pirelli Diablo Rosso II 110/70-R17 M/C 54H
Rear wheel / tyre: 3.50 x 17 in / Pirelli Diablo Rosso II 140/70-R17 M/C 66H
Front pressure (cold): 221 kPa (32 PSI)
Rear pressure (cold): 234 kPa (34 PSI)

Lighting

Headlight: H3 halogen 55W
Tail light: 1157 incandescent 5W
Turn signals: RY10W amber 10W
Running light (DRL): W3W 3W

Dimensions & weight

Seat height: 836 mm
Curb weight: 133 kg

Real-world data

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

Maintenance & parts

From the official Zero owner & service manuals.

Consumables & wear parts

Drive belt: Poly Chain HTD Carbon belt (90T / 18T)
Brake fluid: DOT 4
Front tyre: Pirelli Diablo Rosso II 110/70-R17 M/C 54H
Rear tyre: Pirelli Diablo Rosso II 140/70-R17 M/C 66H
Headlight: H3 halogen 55W
Tail light: 1157 incandescent 5W
Turn signals: RY10W amber 10W

Drive belt service

Tension target: Gates Carbon Drive, 11 mm belt pitch. Frequency method (Gates Carbon Drive smartphone app): 42.5 Hz to 73.6 Hz. Tension Tester tool: 25-76.5 kg (approx. 55-169 lb).
Inspect / adjust: Inspect belt for damage/cracking every ride; check belt tension at initial 100 mi (160 km), initial 600 mi (1,000 km), then every 8,000 mi (13,000 km) or 12 months.
Replace: Every 24,000 mi (37,000 km) (Note A), or sooner if damaged/ratcheting.
First / break-in service: Initial 100 mi (160 km): check drive belt tension (break-in); followed by a second early service at 600 mi / 1,000 km. Zero also recommends a dealer service every 12 months regardless of distance.
Belt part number: — (dealer parts catalog)

Key torque specs

Rear axle end bolt: 75 lb-ft (102 Nm), Loctite 242
Rear axle nut (drive belt adjustment): 75 lb-ft (102 Nm), Loctite 242
Belt tensioner / axle jam nuts: 15 lb-ft (20 Nm)
Front axle: 40 lb-ft (54 Nm), anti-seize
Main pivot bolt/nut (swingarm): 75 lb-ft (102 Nm), Loctite 242
Front brake caliper mount bolts: 19 lb-ft (26 Nm), Loctite 242
Rear brake pad pin: 6 lb-ft (8 Nm), Loctite 242
Rear axle slider retaining bolts: 15 lb-ft (26 Nm)
Handlebar clamp mount bolts: 18 lb-ft (24 Nm)
Shock mount bolts (upper / lower): 52 lb-ft (70.5 Nm) / 38 lb-ft (51.5 Nm)

Service schedule

Every ride
Check brake fluid level (front & rear); check front & rear brake operation, fluid leakage and pads; check tyres (tread depth, damage, air pressure); inspect drive belt for damage/cracking; check belt & chain sprockets; check drive-chain slack/alignment/condition (lubricate after exposure to water); check front fork and rear shock for operation/oil leakage; check throttle grip operation and free play
Initial 100 mi (160 km) - first service / break-in
Check drive belt tension
Initial 600 mi (1,000 km) - second service
Check drive belt tension; check wheel bearings; adjust and thoroughly lubricate drive chain; check steering bearings for looseness; apply grease and check front brake lever pivot shaft; check kickstand switch operation; drive motor commissioning and timing
Every 8,000 mi (13,000 km) or 12 months
Replace brake fluid (front & rear); check wheels for run-out/damage; check wheel bearings; check drive belt tension; check steering bearings for looseness; check and tighten all chassis fasteners; grease/check/service front brake lever pivot shaft; check throttle grip; check and grease kickstand pivots; check/replace kickstand switch; drive motor commissioning and timing
Every 16,000 mi (25,000 km) - Note B
Repack steering bearings with all-purpose grease
Every 24,000 mi (37,000 km) - Note A
Replace drive belt; check swingarm pivot bearings for smooth operation
As needed
Replace worn drive chain

Model year evolution

Year	CV	Nm	km/h	kWh	kg	kg/CV	Belt
2021	44	106	132	7.2	133	3.02	90T / 18T
2020	44	106	132	7.2	133	3.02	90T / 18T
2019	44	106	132	7.2	133	3.02	90T / 18T
2018	44	106	132	7.2	133	3.02	90T / 18T
2017	44	106	137	6.5	133	3.02	90T / 20T
2016	44	95	132	6.5	133	3.02	132T / 25T

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.