The Yamaha SRX400 is a four-stroke, single cylinder motorcycle that was manufactured between 1987 and 1990. It has a 399cc engine with a bore and stroke of 87 x 67.2 mm and a compression ratio of 9.2:1. The motorbike is air cooled and has a YDIS twin carburetor induction and TCI ignition. It has a kick start and a maximum power of 33 hp at 7000 rpm and a maximum torque of 3.4 kgf-m at 6000rpm. The transmission is five speed, and the final drive is a chain with a 428 heavy duty O-ring and 138 links. It has a single 320mm disc four piston caliper front brake and a single disc rear brake, with telescopic forks and dual shocks for its rear and front suspension, respectively. The front and the rear tyre sizes 110/70-17 and 140/70-17 both tubeless, respectively. It weighs 147kg and has a fuel capacity of 15 litres or 3.9 US gallons.
Technical specifications:
Make Model: Yamaha SRX 400
| Year | 1987 – 90 |
|---|---|
| Engine | Four stroke, single cylinder, SOHC, 4 valves |
| Capacity | 399 cc / 24.3 cu-in |
| Bore x Stroke | 87 67.2 mm |
| Cooling System | Air cooled |
| Compression Ratio | 9.2:1 |
| Induction | YDIS Twin Carburetor |
| Ignition | TCI |
| Spark Plug | DPR8EA-9, IX24B, DPR8EIX |
| Starting | kick |
| Max Power | 33 hp / 24.6 kW @ 7000 rpm |
| Max Torque | 3.4 kgf-m / 24.5 lb-ft @ 6000 rpm |
| Transmission | 5 Speed |
| Final Drive | Chain, 428 Heavy Duty O-Ring, 138 links |
| Sprocket Front / Rear | 17 / 50 |
| Front Suspension | Telescopic forks |
| Rear Suspension | Dual shocks |
| Front Brakes | Single 320mm disc 4 piston caliper |
| Rear Brakes | Single disc |
| Front Tyre | 110/70-17 Tubeless |
| Rear Tyre | 140/70-17 Tubeless |
| Dry Weight | 147 kg / 324 lbs |
| Fuel Capacity | 15 Liters / 3.9 US gal |
