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					Technical specifications
					
				 | 
			
				| Model: | RD 400 | 
			
				| Years: | 1978-79 | 
			
			
					
						| Engine: | Two stroke, parallel twin cylinder, reed-valve torque induction | 
			
					
						| Capacity: | 398 cc / 24.2 cu-in | 
			
					
						| Bore x Stroke: | 64 х 62 mm | 
			
					
						| Cooling System: | Air cooled | 
			
					
						| Compression Ratio: | 6.2 :1 | 
			
					
						| Lubrication: | Autolube | 
			
					
						| Induction: | 2x 28mm Mikuni carburetors | 
			
					
						| Ignition: | CDI | 
			
					
						| Starting: | Kick | 
			
					
						| Max Power: | 44 hp / 32.3 kW @ 7500 rpm | 
			
					
						| Max Torque: | 41.1 Nm / 4.2 kgf-m @ 7000 rpm | 
			
					
						| Clutch: | Wet multiplate | 
			
					
						| Transmission: | 6 Speed | 
			
					
						| Final Drive: | Chain | 
			
					
						| Front Suspension: | Telescopic forks | 
			
					
						| Rear Suspension: | Swing arm, dual shocks | 
			
					
						| Front Brakes: | Single 267mm disc | 
			
					
						| Rear Brakes: | Single 267mm disc | 
			
					
						| Front Tyre: | 3.00S-18 | 
			
					
						| Rear Tyre: | 3.50S-18 | 
			
					
						| Dimensions: | Length 1995 mm / 78.5 in Width 760 mm / 3.0 in Height 1060 mm / 41.7 in | 
			
					
						| Wheelbase: | 1320 mm / 51.9 in | 
			
					
						| Seat Height: | 800 mm / 31.4 in | 
			
					
						| Ground Clearance: | 150 mm / 5.9 in | 
			
					
						| Dry Weight: | 165.5 kg / 364.8 lbs | 
			
					
						| Wet Weight: | 171 kg / 376 lbs | 
			
					
						| Fuel Capacity: | 16.5 Litres / 4.3 US gal | 
			
					
						| Consumption Average: | 43 mpg | 
			
					
						| Standing ¼ Mile: | 14.1 sec / 90.1 mph 145 km/h | 
			
					
						| Top Speed: | 106.8 mph 172 km/h |