COMPARE RESULTS

3 Models Selected

Ninja ZX-25R

Ninja ZX-4R

DIMENSIONS

Overall length

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1,980 mm

Ninja ZX-4R

1,990 mm
Overall width

Ninja ZX-25R

750 mm

Ninja ZX-4R

765 mm
Overall height

Ninja ZX-25R

1,110 mm

Ninja ZX-4R

1,110 mm
Wheelbase

Ninja ZX-25R

1,380 mm

Ninja ZX-4R

1,380 mm
Road clearance

Ninja ZX-25R

125 mm

Ninja ZX-4R

135 mm
Seat height

Ninja ZX-25R

785 mm

Ninja ZX-4R

800 mm
Curb mass

Ninja ZX-25R

184 kg

Ninja ZX-4R

188 kg
Dry mass

Ninja ZX-25R

-

Ninja ZX-4R

-
Fuel tank capacity

Ninja ZX-25R

15 litres

Ninja ZX-4R

15 litres

PERFORMANCE

Max. power

Ninja ZX-25R

34.5 kW { 46 PS} / 15,500 min-1

Ninja ZX-4R

55.0 kW {75 PS} / 14,500 min-1
Max. Power with Ram Air

Ninja ZX-25R

35.2 kW { 47 PS} / 15,500 min-1

Ninja ZX-4R

56.7 kW {77 PS} / 14,500 min-1
Max. torque

Ninja ZX-25R

22.0 N·m {2.2 kgƒ·m} / 12,500 min-1

Ninja ZX-4R

39.0 N·m {4.0 kgƒ·m} / 13,000 min-1

ENGINE

Type / Valve system

Ninja ZX-25R

4-stroke In-Line Four

Ninja ZX-4R

4-stroke In-Line Four
Coolant System

Ninja ZX-25R

Liquid-cooled

Ninja ZX-4R

Liquid-cooled
Bore x Stroke

Ninja ZX-25R

50.0 x 31.8 mm

Ninja ZX-4R

57.0 x 39.1 mm
Displacement

Ninja ZX-25R

250 cc

Ninja ZX-4R

399 cm3
Compression ratio

Ninja ZX-25R

11.5:1

Ninja ZX-4R

12.3:1
Fuel supply

Ninja ZX-25R

Fuel injection: (ø30 x 4)

Ninja ZX-4R

Fuel injection: ø34 mm x 4
Lubrication system

Ninja ZX-25R

Forced Wet Sump

Ninja ZX-4R

Forced lubrication, wet sump
Starting system

Ninja ZX-25R

EL. Starter

Ninja ZX-4R

EL. Starter
Ignition system

Ninja ZX-25R

Digital

Ninja ZX-4R

Digital

DRIVETRAIN

Driving system

Ninja ZX-25R

Chain

Ninja ZX-4R

Chain
Transmission

Ninja ZX-25R

6-speed, return, dog-ring

Ninja ZX-4R

6-speed, return
Primary reduction ratio

Ninja ZX-25R

2.900 (87/30)

Ninja ZX-4R

2.029 (69/34)
1st Gear ratios

Ninja ZX-25R

2.929 (41/14)

Ninja ZX-4R

2.929 (41/14)
2st Gear ratios

Ninja ZX-25R

2.056 (37/18)

Ninja ZX-4R

2.056 (37/18)
3st Gear ratios

Ninja ZX-25R

1.619 (34/21)

Ninja ZX-4R

1.619 (34/21)
4st Gear ratios

Ninja ZX-25R

1.333 (32/24)

Ninja ZX-4R

1.333 (32/24)
5st Gear ratios

Ninja ZX-25R

1.154 (30/26)

Ninja ZX-4R

1.154 (30/26)
6st Gear ratios

Ninja ZX-25R

1.037 (28/27)

Ninja ZX-4R

1.037 (28/27)
Final reduction ratio

Ninja ZX-25R

3.571 (50/14)

Ninja ZX-4R

3.429 (48/14)
Clutch type (Primary)

Ninja ZX-25R

Wet, multi-disc

Ninja ZX-4R

Wet multi-disc, manual

FRAME

Type

Ninja ZX-25R

Trellis, high-tensile steel

Ninja ZX-4R

Trellis, high-tensile steel
Front Suspension

Ninja ZX-25R

ø37 mm inverted fork (SFF-BP) with top-out springs

Ninja ZX-4R

ø37 mm inverted fork (SFF-BP) with top-out springs
Rear Suspension

Ninja ZX-25R

Horizontal Back-link, gas-charged shock with spring preload adjustability

Ninja ZX-4R

Horizontal Back-link, gas-charged shock with spring preload adjustability
Front Wheel travel

Ninja ZX-25R

120 mm

Ninja ZX-4R

120 mm
Rear Wheel travel

Ninja ZX-25R

116 mm

Ninja ZX-4R

112 mm
Caster (Rake angle)

Ninja ZX-25R

24.2 o

Ninja ZX-4R

23.5°
Trail

Ninja ZX-25R

99 mm

Ninja ZX-4R

97 mm
Steering angle (left/right)

Ninja ZX-25R

35° / 35°

Ninja ZX-4R

35° / 35°
Front Tyre

Ninja ZX-25R

110/70R17M/C (54H)

Ninja ZX-4R

120/70ZR17M/C (58W)
Rear Tyre

Ninja ZX-25R

150/60R17M/C (66H)

Ninja ZX-4R

160/60ZR17M/C (69W)
Front Type Brake

Ninja ZX-25R

Single disc

Ninja ZX-4R

Dual semi-floating ø290 mm discs
Caliper (Front)

Ninja ZX-25R

Ninja ZX-4R

Dual radial-mount, monobloc, opposed 4-piston
Rear Type Brake

Ninja ZX-25R

Single disc

Ninja ZX-4R

Single ø220 mm disc
Caliper (Rear)

Ninja ZX-25R

Ninja ZX-4R

Single-piston
Colour

Ninja ZX-25R

LIME GREEN/ EBONY (2023)

Ninja ZX-4R

METALLIC SPARK BLACK (2024)
Promotion

Ninja ZX-25R

Ninja ZX-4R

Price

Ninja ZX-25R

299,000

Ninja ZX-4R

299,000