Suzuki GSX400 Impulse

Make Model	Suzuki GSX 400F Impulse
Year	1994 - 95
Engine	Four stroke, in-line 4 cylinders, DOHC, 4 valves per cylinder
Capacity	399 cc / 24.3 cu in
Bore x Stroke	52 x 47 mm
Compression Ratio	11.8:1
Cooling System	Liquid cooled
Induction	4 x 29 mm Carburetors
Starting	Electric
Max Power	44 kW / 59 hp @ 12000 rpm
Max Torque	37 Nm / 3.8 kgf-m / 27.3 lb-ft @ 10500 rpm
Transmission	6 Speed
Final Drive	Chain
Front Suspension	Telescopic forks
Rear Suspension	Dual shocks, preload adjustable.
Front Brakes	2 x 290 mm Discs, 2 piston calipers
Rear Brakes	Single disc, 1 piston caliper
Front Tyre	110/80-17
Rear Tyre	130/80-17
Dimensions	Length: 2065 mm / 81.3 in Width: 740 mm / 29.1 in Height: 1110 mm / 43.7 in
Wheelbase	1435 mm / 56.5 in
Seat Height	760 mm / 29.9 in
Dry Weight	153 kg / 337 lbs
Fuel Capacity	18 Litres / 4.8 US gal / 4.0 Imp gal

GSX400 Impulse (internal code GK79A) was released in 1994 for Japanese home market with a chassis straight out of the seventies, although it’s far more competent (125 mph, 55 mpg) than the old bruisers.

The bike has the same engine internals as the GSF400 Bandit but has different engine cases and a much larger frame.

The motor’s still highly strung and therefore somewhat misplaced in retro guise.

Suzuki GSX 400F Impulse