QJ Motor SRK 421 RR 2026 vs. Yamaha R3 2021

Technical Specifications QJ Motor SRK 421 RR 2026 compared to Yamaha R3 2021

QJ Motor SRK 421 RR 2026

Yamaha R3 2021

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Differences

QJ Motor SRK 421 RR 2026

Yamaha R3 2021

Engine and Drive Train

Fuel system	Fuel system	Injection	Fuel system	Injection
Starter	Starter	Electric	Starter	Electric
Transmission	Transmission	Chain	Transmission	Chain
Number of gears	Number of gears	6	Number of gears	6
Cylinders	Cylinders	4	Cylinders	2
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	421 ccm	Displacement	321 ccm

Suspension Front

Front suspension	Front suspension	Upside-Down telescopic fork	Front suspension	Upside-Down telescopic fork

Suspension Rear

Suspension	Suspension	Swing arm	Suspension	Swing arm

Brakes Front

Type	Type	Double disk	Type	Single disk
Diameter	Diameter	300 mm	Diameter	298 mm

Brakes Rear

Type	Type	Disc	Type	Disc
Diameter	Diameter	240 mm	Diameter	220 mm

Assistance Systems

Advanced Rider Assistance Systems	Advanced Rider Assistance Systems	ABS	Advanced Rider Assistance Systems	ABS

Dimensions and Weights

Front tyre width	Front tyre width	120 mm	Front tyre width	110 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	160 mm	Rear tyre width	140 mm
Rear tyre height	Rear tyre height	60 %	Rear tyre height	70 %
Rear tyre diameter	Rear tyre diameter	17 inch	Rear tyre diameter	17 inch
Length	Length	2,020 mm	Length	2,090 mm
Width	Width	755 mm	Width	720 mm
Height	Height	1,170 mm	Height	1,135 mm
Seat Height	Seat Height	795 mm	Seat Height	780 mm
Fuel Tank Capacity	Fuel Tank Capacity	16.5 l	Fuel Tank Capacity	14 l