Suzuki RG 400 Gamma - 1985 Specifications and Reviews
The 1985 Suzuki RG 400 Gamma is a lightweight sport bike that appeals to riders seeking affordable, nimble performance. Its 397cc V4 engine delivers 59 horsepower at 10,000 rpm, providing spirited acceleration and excellent handling characteristics typical of mid-1980s Japanese sportbikes. Best known for its compact four-cylinder engineering and race-inspired design, it remains a cult favorite among enthusiasts valuing vintage lightweight sport machines.
1985
General information | |
| Category | Sport |
| Year | 1985 |
| Model | Suzuki RG 400 Gamma |
Engine and Transmission Specifications | |
| Clutch | wet 8-plate type |
| Transmission typefinal drive | Chain |
| Gearbox | 6-speed |
| Cooling system | Liquid |
| Lubrication system | Suzuki ´CCI´ Oil pump injection (carbs) + Wet sump (transmission/clutch) |
| Starter | Kick |
| Ignition | electronic SUZUKI ´PEI´ 14deg B.T.D.C.below1700rpm 26deg B.T.D.C. (2700 - 6000rpm) 11deg B.T.D.C.above9500rpm; NGK : BR9ES; 12V 14.4KC (4Ah)/10HR; Three-phase AC.; 20A |
| Fuel control | Rotary valves |
| Valves per cylinder | 1 |
| Fuel system | Carburettor. Mikuni VM28SH (VM28SS), four (Flat Slide) |
| Bore x stroke | 50.0 x 50.6 mm (2.0 x 2.0 inches) |
| Compression | 7.0:1 |
| Max RPM | 10000 |
| Power | 59.00 |
| Stroke | 2 |
| Engine type | V4 |
| Capacity: | 397.40 ccm (24.25 cubic inches) |
Physical measures and capacities | |
| Wheelbase | 1,425 mm (56.1 inches) |
| Ground clearance | 120 mm (4.7 inches) |
| Overall width | 695 mm (27.4 inches) |
| Overall length | 2,100 mm (82.7 inches) |
| Overall height | 1,185 mm (46.7 inches) |
| Seat height | 770 mm (30.3 inches) If adjustable, lowest setting. |
| Rear percentage of weight | 51.0 |
| Front percentage of weight | 49.0 |
| Weight incl. oil, gas, etc | 181.0 kg (399.0 pounds) |
| Dry weight | 154.0 kg (339.5 pounds) |
| | |
Suzuki RG 400 Gamma dimensions and frame | |
| Exhaust system | 4in4 steel pipes with expansion chambers |
| Rear brakes diameter | 210 mm (8.3 inches) |
| Rear brakes | Single disc. 2-piston caliper |
| Front brakes diameter | 260 mm (10.2 inches) |
| Front brakes | Double disc. 4-piston calipers |
| Rear tyre dimensions | 2.75-17 |
| Front tyre dimensions | 2.50-16 |
| Rear suspension travel | 127 mm (5.0 inches) |
| Rear suspension | Full-floating suspension sytem, gas/oil damped, spring pre-load fully adjustable |
| Front suspension travel | 130 mm (5.1 inches) |
| Front suspension | 38mm Telescopic pneumatic/coil spring oil damped with posi-damp unit, adjustable anti dive valving. Spring pre-load fully adjustable |
| Trail | 110 mm (4.3 inches) |
| Rake (fork angle) | 25.5° |
| Frame type | double downtube, full cradle, box section aluminium perimetre frame |
| | |
Speed and acceleration | |
| Power/weight ratio | 0.3831 HP/kg |
| 1/4 mile (0.4 km) | 11.800 seconds |
| 0-100 km/h (0-62 mph) | 4.900 seconds |
| Top speed | 205.0 km/h (127.4 mph) |
Other specs | |
| Modifications compared to previous model | differnces to the 500 model: cylinders; gaskets; cylinder heads; upper engine case is different, would be needed to drill out for a 500 barrel fittment; big end crankshaft needle bearing has one less pin than the 500; 2 different RVs and both different to the 500, different inner-outer covers and rotary valves themselves, only in the center match, same durations; shorter clutch basket; shorter clutch hub; 8 instead of 9 clutch plates; shape of the carb needle, #135 main jet instead of #120 (500); exhaust p |
| Color options | 85_Champion_Blue-Super_white (RG500Gamma same = 7GF), 85_Black-Super_white (RG500Gamma same = 7TV) 85_black-red-WW Walter Wolf |
| Fuel consumption pr. 10 km (6.2 miles) | 9.00 litres (2.38 gallons) |
| Reserve fuel capacity | 5.00 litres (1.32 gallons) |
| Fuel capacity | 22.00 litres (5.81 gallons) |
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