Enduro - Offroad · 1991
R 65 GS
MotoLibrary Score
41 /100 Commuter
Power
27 HP
Engine
650 ccm
Technical Overview
1991 BMW R 65 GS Technical Analysis & Specification Breakdown
Positioned in BMW's enduro - offroad motorcycle lineup, the 1991 BMW R 65 GS relies on a 650 cc (39.7 cu in) air-cooled two cylinder boxer, four-stroke powerplant. In factory specification, peak output is rated at 27 HP (19.7 kW). With a specific output of 41.5 HP per liter, the engine character is prioritizing low-RPM tractability, mechanical longevity and relaxed throttle response over peak redline numbers.
Within MotoLibrary's BMW archive, this model family spans 4 indexed model years from 1988 to 1991, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Specific Output
41.5 HP/L
Engine
Displacement 650.0 ccm (39.66 cubic inches)
Engine Type Two cylinder boxer, four-stroke
Engine Details Two cylinder boxer, four-stroke
Power 27.0 HP (19.7 kW))
Valves/Cylinder 2
Fuel Control Overhead Valves (OHV)
Cooling Air
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Rider Profile
Who Is This Bike For?
🟢
Beginner
A2 license compatible, manageable power.
🌲
Best For
Off-Road & Adventure
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