Tue. Apr 21st, 2026

Yamaha SR 400

The Yamaha SR400 is a revered member of Yamaha’s lineup, renowned for its classic design and a nod to the golden era of motorcycling. Introduced as a successor to the iconic SR500, the SR400 has retained its predecessor’s timeless appeal and authenticity. At the heart of the SR400 lies a simple yet robust air-cooled, 399cc single-cylinder engine. This powerplant is not only a testament to Yamaha’s commitment to traditional motorcycling but also a statement on the enduring allure of uncomplicated, thumper-style machines. Embodying the spirit of retro motorcycling, the SR400 features a kick-start mechanism, reinforcing its connection to a bygone era while offering riders a pure and engaging riding experience.

Riding the Yamaha SR400 is like taking a step back in time, as it delivers a visceral and unfiltered experience. With a focus on simplicity and rider engagement, the SR400 eschews modern complexities for a straightforward, rider-centric design. The classic round headlight, slim fuel tank, and a no-frills approach to instrumentation contribute to the bike’s vintage charm. The SR400 is not just a motorcycle; it’s a timeless piece of machinery that resonates with riders who appreciate the beauty of simplicity and the authentic soul of motorcycling. Whether cruising through city streets or meandering along scenic backroads, the Yamaha SR400 invites riders to embrace the essence of pure and uncomplicated two-wheeled joy.

Yamaha SR 400 parameters

  1. Engine:
    • Type: Air-cooled, 4-stroke, SOHC, single-cylinder
    • Displacement: 399 cc
    • Bore x Stroke: 87.0 mm x 62.7 mm
    • Compression Ratio: 8.5:1
    • Fuel System: Fuel injection
  2. Performance:
    • Maximum Power: Approximately 22.9 hp (17.0 kW) @ 6,500 rpm
    • Maximum Torque: Approximately 27.4 Nm (20.2 lb-ft) @ 3,000 rpm
    • Transmission: 5-speed constant mesh
  3. Chassis:
    • Frame Type: Diamond steel
    • Suspension:
      • Front: Telescopic fork
      • Rear: Swingarm with twin shock absorbers
    • Brakes:
      • Front: Hydraulic disc, 268 mm
      • Rear: Drum brake, 150 mm
  4. Wheels and Tires:
    • Front Tire: 90/100-18M/C 54S
    • Rear Tire: 110/90-18M/C 61S
    • Wheelbase: 1,410 mm (55.5 inches)
  5. Dimensions:
    • Length: 2,090 mm (82.3 inches)
    • Width: 750 mm (29.5 inches)
    • Height: 1,130 mm (44.5 inches)
    • Seat Height: 790 mm (31.1 inches)
    • Ground Clearance: 140 mm (5.5 inches)
    • Fuel Capacity: 12 liters (3.2 gallons)
  6. Weight:
    • Wet Weight: Approximately 174 kg (384 lbs)
  7. Other Features:
    • Kick start
    • Classic round headlight
    • Retro styling with minimalistic features

YAMAHA SR400 20070304-03