Yamaha R3 2021 vs. Kawasaki Ninja ZX-6R 2025

Yamaha R3 2021

Kawasaki Ninja ZX-6R 2025

Overview - Yamaha R3 2021 vs Kawasaki Ninja ZX-6R 2025

Yamaha R3 2021

Kawasaki Ninja ZX-6R 2025

Technical Specifications Yamaha R3 2021 compared to Kawasaki Ninja ZX-6R 2025

Yamaha R3 2021

Kawasaki Ninja ZX-6R 2025

Yamaha R3 2021

Kawasaki Ninja ZX-6R 2025

Engine and Drive Train

Bore	Bore	68 mm	Bore	67 mm
Stroke	Stroke	44.1 mm	Stroke	45.1 mm
Engine power	Engine power	42 HP	Engine power	124 HP
Rpm at Max. Power	Rpm at Max. Power	10,750 rpm	Rpm at Max. Power	13,000 rpm
Torque	Torque	29.6 Nm	Torque	69 Nm
Rpm at Torque	Rpm at Torque	9,000 rpm	Rpm at Torque	10,800 rpm
Compression Ratio	Compression Ratio	11.2	Compression Ratio	12.9
Fuel system	Fuel system	Injection	Fuel system	Injection
Starter	Starter	Electric	Starter	Electric
Clutch Type	Clutch Type	Multiplate in oil-bath	Clutch Type	Multiplate in oil-bath
Ignition	Ignition	Transistor	Ignition	Digital
Transmission	Transmission	Chain	Transmission	Chain
Number of gears	Number of gears	6	Number of gears	6
Cylinders	Cylinders	2	Cylinders	4
Strokes	Strokes	4-Stroke	Strokes	4-Stroke
Valves per cylinder	Valves per cylinder	4	Valves per cylinder	4
Valves	Valves	DOHC	Valves	DOHC
Cooling	Cooling	liquid	Cooling	liquid
Displacement	Displacement	321 ccm	Displacement	636 ccm

Suspension Front

Front suspension	Front suspension	Upside-Down telescopic fork	Front suspension	Upside-Down telescopic fork
Diameter	Diameter	37 mm	Diameter	41 mm

Suspension Rear

Suspension	Suspension	Swing arm	Suspension	Swing arm
Travel	Travel	125 mm	Travel	151 mm

Chassis

Frame type	Frame type	Twin Tube	Frame type	Twin Tube, Perimeter, Extruded
Rake	Rake	25 degree	Rake	66.5 degree
Trail	Trail	95 mm	Trail	101 mm

Brakes Front

Type	Type	Single disk	Type	Double disk
Diameter	Diameter	298 mm	Diameter	310 mm

Brakes Rear

Type	Type	Disc	Type	Disc
Diameter	Diameter	220 mm	Diameter	220 mm

Assistance Systems

Advanced Rider Assistance Systems	Advanced Rider Assistance Systems	ABS	Advanced Rider Assistance Systems	ABS, Riding modes, Quickshifter, Traction control

Dimensions and Weights

Front tyre width	Front tyre width	110 mm	Front tyre width	120 mm
Front tyre height	Front tyre height	70 %	Front tyre height	70 %
Front tyre diameter	Front tyre diameter	17 inch	Front tyre diameter	17 inch
Rear tyre width	Rear tyre width	140 mm	Rear tyre width	180 mm
Rear tyre height	Rear tyre height	70 %	Rear tyre height	55 %
Rear tyre diameter	Rear tyre diameter	17 inch	Rear tyre diameter	17 inch
Length	Length	2,090 mm	Length	2,025 mm
Width	Width	720 mm	Width	710 mm
Height	Height	1,135 mm	Height	1,105 mm
Wheelbase	Wheelbase	1,380 mm	Wheelbase	1,400 mm
Seat Height	Seat Height	780 mm	Seat Height	830 mm
Kerb Weight (with ABS)	Kerb Weight (with ABS)	169 kg	Kerb Weight (with ABS)	198 kg
Fuel Tank Capacity	Fuel Tank Capacity	14 l	Fuel Tank Capacity	17 l
License compliancy	License compliancy	A2	License compliancy	A

Pros and Cons in comparison

Yamaha R3 2021

Unfortunately, our editors did not test this model.

Kawasaki Ninja ZX-6R 2025

The Kawasaki Ninja ZX-6R impresses with a powerful 636 cubic centimetres engine and dynamic handling, making it a thoroughly potent and sportily tuned machine. The well-functioning quickshifter and clear display contribute to a positive riding experience. However, the aggressive riding position significantly compromises comfort and the lack of a modern ride-by-wire system prevents the use of a blipper - making the ZX-6R look outdated compared to competitor models. Overall, it is an excellent choice for riders with sporting ambitions, but offers room for improvement in terms of comfort and modern features.

Powerful 636cc engine with plenty of grunt and power

well-functioning quickshifter at high rpm

good handling and pleasant ride feel

clear and easy-to-read display

sporty suspension

reliable brakes

Missing Ride-by-Wire system - therefore no blipper

aggressive riding position with acute knee angle and handlebar ends turned inwards

lack of comfort for longer rides

somewhat spartan display compared to the competition