Kawasaki Ninja ZX-25R vs Kawasaki Ninja ZX-4RR Comparison

Engine & Performance

Displacement	249.8 cc	399 cc
Maximum Power	51 hp	76 hp
Clutch Type	Wet, Multi-Plate, Manual	Wet, Multi-Plate
Cooling System	Liquid Cooled	Liquid Cooled
Exhaust Pipes	4 Into 1 Exhaust	4 Into 1 Exhaust
No. Of Strokes	4-Stroke	4-Stroke
Injection Type	Fuel Injection	Fuel Injection
Bore X Stroke	50 mm x 31.8 mm	57 mm x 39.1 mm
Drive Type	Chain Drive	Chain Drive
Engine Type	Inline 4 Cylinder, 4-Stroke, 16 Valves, Liquid Cooled DOHC Engine	In-Line Four Cylinder, 16 Valves, 4-Stroke, Liquid Cooled DOHC Engine
No. Of Cylinder	4	4
Maximum Torque	22.9 Nm	37.6 Nm
Valves Per Cylinder	4	4
Valve Configuration	DOHC	DOHC
Compression Ratio	12.5:1	12.3:1
Lubrication System	Forced Lubrication, Wet Sump	--
RPM at Maximum Power	15500 rpm	14500 rpm
RPM at Maximum Torque	14500 rpm	12500 rpm
Fuel Tank Size	15 L	15 L

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Dimension

Category	Sport	Sport
Seating Capacity	2 Seats	2 Seats
Width	750 mm	765 mm
Length	1980 mm	1990 mm
Wheel Base	1380 mm	1380 mm
Seat Height	785 mm	800 mm
Height	1110 mm	1110 mm
Kerb Weight	180 kg	189 kg
Ground Clearance	125 mm	135 mm

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Fuel & Ignition

Ignition System	Digital	--
Start Option	Electric	Electric
Fuel Type	Petrol	Petrol

Gear & Transmission

Transmission Type	Manual	Manual
Gear Box	6-Speed	6-Speed

Wheels & Tyres

Front Wheel Size	R17	R17
Rear Wheel Size	R17	R17
Rear Tyre	150/60 R17	160/60ZR17
Tyre Type	Radial, Tubeless	Runflat
Front Tyre	110/70 R17	120/70ZR17

Chassis & Suspension

Suspension Travel(Rear)	116 mm	--
Rear Suspension	Horizontal Back-link	Horizontal Back-link
Front Suspension	USD Telescopic Fork	Inverted Fork
Suspension Travel(Front)	120 mm	--

Safety & Security

ABS	No	--
Pass Switch	Yes	Yes
Wheel Lock Front/back	No	No
Riding Modes	Sport, Road, Race Sport, Road, Race	Street, Road, Sport Street, Road, Sport
Back Rest	No	No
Shutter Lock	No	--
Leg Guards	No	No
Traction Control	Yes	Yes
Stability Control	Yes	--
Engine Check Warning	Yes	Yes
Launch Control	--	No
Side Reflectors	--	Yes
Anti-Theft Alarm	--	Yes

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Console

Odometer	Digital Digital	Digital Digital
Fuel Gauge	Digital Digital	Digital Digital
Navigator	No	No
Tachometer	Yes	Yes
Tripmeter	Yes	Yes
Oil Change Indicator	Yes	--
Speedometer	Digital Digital	Digital Digital
Side Stand Indicator	No	No
Display Screen	Yes	Yes

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Brake

Front Brake	Disc Disc	Disc Disc
Rear Brake	Disc Disc	Disc Disc

Chassis & Suspension

Body Frame Type	Trellis Trellis	Trellis Trellis
Seat Type	Dual Stepped Dual Stepped	Dual Stepped Dual Stepped
Body Frame Material	Steel Steel	Steel Steel
Side Wings	Yes	No
Electronic Suspension Adjustment	--	No
Chrome Garnish	--	No

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Differentiating Features

Cruise Control	No	--
Height Adjustable Seats	No	No

Electrical

Battery Voltage	12 V 12 V	12 V 12 V
Tail Lamp	LED LED	Bulb Bulb
Head Lamp	LED LED	LED LED
Indicator Light	Yes	Yes
Adjustable Headlights	Yes	Yes