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1990年Suzuki GSX-R 400SP

2013/7/31 9:37:00

Suzuki GSX-R 400SP

Make Model Suzuki GSX-R 400SP
Year 1990
Engine Liquid cooled, four stroke, transverse four cylinder, DOHC 4 valves per cylinder.
Capacity 398
Bore x Stroke 56 х 40 4 mm
Compression Ratio 12.0:1
Induction  
Ignition  /  Starting -  /  electric
Max Power 59 hp @ 12500 rpm
Max Torque 4.0 kg-m @ 10000 rpm
Transmission  /  Drive 6 Speed  /  chain
Front Suspension  
Rear Suspension  
Front Brakes 2z discs
Rear Brakes Single disc
Front Tyre 120/60 R17
Rear Tyre 15O/60 R17
Dry-Weight 167 kg
Fuel Capacity 

The GSX-R400 got a new frame (GK73A) and new overall appearance in 1988. The new model was presented in February 1988. The redesigned GSX-R got once again new fairing and shorter wheelbase, but the weight increased a bit due to the stronger new chassis and exhaust system. The model also got slingshot carburetors, polished chrome silencers, curved radiator, Tokico 4-cylinder front brake calipers and a rear hugger mudguard.

The new 4 into 2 exhaust was meant to increase the torque on the mid-range band, but had only a marginal effect.

The 400cc series were increasing popularity in Japan and a production racer with different suspension and gearing, GSX-R400 SP (Sports Production) was presented for 1988. It looked almost identical with the standard GSX-R400 but didn't have passenger foot pegs and you could spot the rear suspension gas reservoir peeking out from under the seat. Also the front suspension was different from the standard model. The SP version also had a Sports Production logo on the tailpiece.

To compete in production racing, the manufacturers produce SP (Sports Production) versions of their sports bikes. These usually have fully adjustable suspension, close ratio gearboxes and a single seat but didn't have more power, due to Japanese motorcycle manufacturer's power restriction code.

The SP's are claimed to be even harder work on the road than a standard GSX-R400. Not that surprising knowing that it was designed for racing only.

Available colors: Blue/White, Black/Red/White, Black
The SP model was available in Blue/White only.