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KTM 300 GS Enduro

Make Model	KTM 300 GS Enduro Sport
Year	1984 - 89
Engine	Single cylinder, two stroke
Capacity	273 cc / 16/7 cu in
Bore x Stroke	71 x 69 mm
Compression Ratio	15:1
Cooling System	Liquid cooled
Induction	Carburetor
Starting	Kick
Max Power	11.7 kW / 16 hp @ 6500 rpm
Transmission	5-Speed
Final Drive	Chain
Frame	Double cradle, steel
Front Suspension	USD telescopic fork
Rear Suspension	Mono shock
Front Brakes	Single disc
Rear Brakes	Drum, expanding
Front Tyre	3.00 x 21"
Rear Tyre	4.50 x 18"
Wet Weight	117 kg / 259 lbs
Fuel Capacity	9.5 L / 2.5 US gal / 2.1 Imp gal
Top Speed	110 km/h / 68 mph

The original 300GS Enduro grew out of the experience with 250 cc Penton Hare Scrambler and other KTM air cooled 2-stroke enduro bikes. Since the 1986 rules for the International Six Days Enduro (ISDE) for the open class allowed any bike larger that 250 cc, KTM started work on a water cooled over-250 cc bike for the open class.

They essentially bored their 250 out to 273 cc and called it a 300. This version of the 300 was discontinued in 1987.

KTM also tried sleeving down their 500 cc two-stroke to 350 cc calling it the 350GS, but the left side kick-starter and the right side chain were not popular.

Tuttomoto Italian magazine 1993