Comparison of Zero S ZF 8.5 and Zero SR ZF 11.4

Attribute	Zero SR ZF 11.4 ×	Zero S ZF 8.5 ×
General
Production from (year)	2014	2014
Make	Zero	Zero
Model	Zero SR ZF 11.4	Zero S ZF 8.5
Category	Sport	Sport
Engine and transmission
Engine type	Electric	Electric
Engine details	Radial flux, permanent high-temp magnet, brushless motor	Radial flux permanent magnet, brushless motor
Power (kw)	48.9	39.4
Cooling system	Air	Air
Transmission type,final drive	Belt	Belt
Torque (Nm)	144	92
Driveline	132T / 28T, Poly Chain® GT® Carbon™ belt	132T / 28T, Poly Chain® GT® Carbon™ belt
Clutch	Clutchless direct drive	Clutchless direct drive
Chassis
Front suspension	43 mm inverted, aluminum slider forks with adjustable compression and rebound damping	43 mm inverted, aluminum slider forks with adjustable compression and rebound damping
Rear suspension	Piggy-back reservoir shock with adjustable spring preload, compression and rebound damping	Piggy-back reservoir shock with adjustable spring preload, compression and rebound damping
Front brakes	Single disc. Floating discs. Two-piston calipers.	Single disc. Floating discs. Two-piston calipers.
Rear brakes	Single disc. Single-piston caliper.	Single disc. Single-piston caliper.
Diameter (mm)	240	240
Front tyre	110/70-17	110/70-17
Rear tyre	140/70-17	140/70-17
Trail (mm)	81	81
Rake (fork angle) (degree)	24	24
Other
Starter	Electric	Electric
Color options	black red yellow	black red yellow
Dimensions
Wheelbase (mm)	1,410	1,410
Kerb weight (kg)	162	166
Seat height (mm)	808	808
Performance
Top speed (km/h)	164	153
Acceleration 0-100 km/h (s)	3.3	4.8