The Yamaha SR400SP motorcycle was produced from 1998 to 2003. It is powered by a 399cc, four-stroke, single-cylinder, SOHC engine with a compression ratio of 8.5:1. The engine is cooled by air and equipped with a BSR33 carburetor and CDI ignition. With a maximum power output of 27 hp and torque of 27.4 Nm, it has a wet, multiple-disc clutch and a five-speed transmission with chain final drive. The motorcycle has a steel double cradle frame, front telescopic fork suspension, and dual shock rear suspension. The front wheel travel is 150 mm, and the rear wheel travel is 111 mm. The front brake is a single disc, and the rear brake is a drum. The front tire is 3.50-19 and the rear tire is 4.00-16, with a wheelbase of 1410 mm and a seat height of 790 mm. The ground clearance is 130 mm, and the wet weight is 174 kg. The motorcycle has a fuel capacity of 12 liters.
Technical specifications:
Make Model: Yamaha SR 400
| Year | 1998 – 03 |
|---|---|
| Engine | Four stroke, single cylinder, SOHC, 2 valves per cylinder. |
| Capacity | 399 cc / 24.3 cu-in |
| Bore x Stroke | 87 67.2 mm |
| Compression Ratio | 8.5:1 |
| Cooling System | Air cooled |
| Oil Capacity | 2.4 Litres |
| Lubrication | Dry sump |
| Induction | BSR33 carburetor |
| Ignition | CDI |
| Starting | Kick |
| Max Power | 27 hp / 17.1 KW @ 7000 rpm |
| Max Torque | 27.4 Nm / 6.3 kgf-m @ 6500 rpm |
| Clutch | Wet, Multiple Disc |
| Transmission | 5 Speed |
| Final Drive | Chain |
| Frame | Steel Double Cradle |
| Front Suspension | Telescopic fork |
| Front Wheel Travel | 150 mm / 5.9 in |
| Rear Suspension | Dual shocks |
| Front Wheel Travel | 111 mm / 4.3 in |
| Front Brakes | Single disc |
| Rear Brakes | Drum |
| Front Tyre | 3.50-19 |
| Rear Tyre | 4.00-16 |
| Rake Caster Angle | 27 o |
| Trail | 111 mm / 4.4 in |
| Wheelbase | 1410 mm / 55.5 IN |
| Seat Height | 790 mm / 30.9 in |
| Ground Clearance | 130 mm / 5.1 in |
| Wet Weight | 174 kg / 384 lbs |
| Fuel Capacity | 12 Litres / 3.2 gal |
