KTM 300 GS Enduro




Make Model.

KTM 300 GS Enduro Sport


1984 - 89


Single cylinder, two stroke


273 cc / 16/7 cu  in
Bore x Stroke 71 x 69 mm
Compression Ratio 15:1
Cooling System Liquid cooled





Max Power

11.7 kW / 16 hp @ 6500 rpm



Final Drive

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.