Suzuki GS400EThe Suzuki GS400E is a motorcycle that was part of the Suzuki GS series in production between 1978 and 1984.EngineThe engine was a 398 cc 4-stroke parallel twin plant that featured double over-head camshafts with two valves per cylinder. The claimed output of the engine is at 8000 rpm and 2.94 kg.m of torque at 7000 rpm.GearboxThe gearbox is of unit construction with the engine and consists of a constant mesh 6-speed transmission with a multi-plate wet clutch and a chain drive.