Yamaha WR450F 2009 vs. KTM 250 EXC-F 2021

Technical Specifications Yamaha WR450F 2009 compared to KTM 250 EXC-F 2021

Yamaha WR450F 2009

KTM 250 EXC-F 2021

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Differences

Yamaha WR450F 2009

KTM 250 EXC-F 2021

Engine and Drive Train

Bore	Bore	95 mm	Bore	78 mm
Stroke	Stroke	63.4 mm	Stroke	52.3 mm
Compression Ratio	Compression Ratio	12.3	Compression Ratio	12.8
Starter	Starter	Kick	Starter	Electric
Clutch Type	Clutch Type	Multiplate in oil-bath	Clutch Type	Multiplate in oil-bath
Transmission	Transmission	Chain	Transmission	Chain
Number of gears	Number of gears	5	Number of gears	6
Cylinders	Cylinders	1	Cylinders	1
Strokes	Strokes	4-Stroke	Strokes	4-Stroke
Valves per cylinder	Valves per cylinder	5	Valves per cylinder	4
Valves	Valves	DOHC	Valves	DOHC
Cooling	Cooling	liquid	Cooling	liquid
Displacement	Displacement	449 ccm	Displacement	249.91 ccm

Suspension Front

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

Chassis

Frame	Frame	Aluminium	Frame	Steel
Frame type	Frame type	Twin Tube	Frame type	Central tube

Brakes Rear

Type	Type	Disc	Type	Disc

Dimensions and Weights

Front tyre diameter	Front tyre diameter	21 inch	Front tyre diameter	21 inch
Rear tyre diameter	Rear tyre diameter	18 inch	Rear tyre diameter	18 inch
Wheelbase	Wheelbase	1,500 mm	Wheelbase	1,482 mm
Seat Height	Seat Height	990 mm	Seat Height	960 mm
Dry Weight	Dry Weight	123.3 kg	Dry Weight	103 kg
Fuel Tank Capacity	Fuel Tank Capacity	8 l	Fuel Tank Capacity	8.5 l