Sport · 1991
FZR 400 RR
Euro 2000. MSRP depends on country, taxes, accessories, etc.
MotoLibrary Score
44 /100 Commuter
Power
56 HP
Torque
42 Nm
Engine
399 ccm
Technical Overview
1991 Yamaha FZR 400 RR Technical Analysis & Specification Breakdown
Positioned in Yamaha's sport motorcycle lineup, the 1991 Yamaha FZR 400 RR pairs a 399 cc (24.4 cu in) in-line four, four-stroke architecture with road-focused gearing. In factory specification, peak output is rated at 56.3 HP (41.1 kW) at 12,000 rpm while maximum torque reaches 42 Nm (31 lb-ft) at 9,500 rpm. With a specific output of 141.1 HP per liter and a 2,500 rpm working window between peak torque (9,500 rpm) and peak power (12,000 rpm), the engine character is placing it firmly in high-revving supersport territory where top-end breathing dominates.
Specific Output
141.1 HP/L
Power Band Window
9,500–12,000 rpm
Engine
Displacement 399.0 ccm (24.35 cubic inches)
Engine Type In-line four, four-stroke
Engine Details In-line four, four-stroke
Power 56.3 HP (41.1 kW)) @ 12000 RPM
Torque 42.0 Nm (4.3 kgf-m or 31.0 ft.lbs) @ 9500 RPM
Bore x Stroke 56.0 x 40.0 mm (2.2 x 1.6 inches)
Fuel System Carburettor
Fuel Control Double Overhead Cams/Twin Cam (DOHC)
Ignition cdi digital
Lubrication wet sump
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Rider Profile
Who Is This Bike For?
🟡
Intermediate
Requires some riding experience.
🏁
Best For
Sport & Track
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