The Yamaha FZR400 was a 400 cc (24 cu in) class sport bike produced by Yamaha Motor Company between 1987 and 1994. The FZR400 was updated every year up until 1994, after which production ended.

Yamaha FZR400
49-state US market 1988 Yamaha FZR400 (1WG)
ManufacturerYamaha Motor Company
Also calledFZR400R, FZR400RR
Production1987–1994
PredecessorYamaha FZ400R
ClassSport bike
Engine399 cc (24.3 cu in) 16-valve DOHC transverse four-stroke inline-four, liquid cooled
Bore / stroke56.0 mm × 40.5 mm (2.20 in × 1.59 in)
Compression ratio11,5 : 1
Power44 kW (59 hp) @ 12000 RPM
Torque42.0 N⋅m (31.0 lbf⋅ft) @ 9500 RPM
DimensionsL: 2,040 mm (80 in)
H: 1,170 mm (46 in)
Seat height785 mm (30.9 in)
Weight157 kg (346 lb) (dry)
185 kg (408 lb) (wet)
Fuel capacity18 L (4.8 US gal)
RelatedYamaha FZR600
Yamaha FZR1000
Yamaha FZ400R

All FZR400s were powered by naturally aspirated, carburetted, liquid-cooled 399cc four-stroke inline-four engines with four valves per cylinder and dual overhead camshafts (DOHC). These engines were all mounted transversely in perimeter type box-section aluminium 'Deltabox' frames. Although standard-fare for modern sport bikes, in 1988 this layout was quite unique. An earlier model called FZ400R was released only in Japan in 1984.

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