Kawasaki Tengai (reduced Effect) - 1991 Specifications and Reviews

The 1991 Kawasaki Tengai reduced effect is a lightweight single-cylinder adventure bike designed for novice and casual riders seeking affordable trail and street versatility. Its 652cc liquid-cooled engine delivers modest 27 horsepower with excellent fuel efficiency, while the compact 190kg frame provides manageable handling. Best known for accessible off-road capability and everyday practicality.

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General information

CategoryUnspecified category
Year1991
ModelKawasaki Tengai (reduced effect)
 
 

Engine and Transmission Specifications

Transmission typefinal driveChain
Gearbox5-speed
Cooling systemLiquid
Fuel controlDOHC
Valves per cylinder4
Bore x stroke100.0 x 83.0 mm (3.9 x 3.3 inches)
Compression9.5:1
Power27.00
Stroke4
Engine typeSingle cylinder
Capacity:652.00 ccm (39.79 cubic inches)

Physical measures and capacities

Weight incl. oil, gas, etc190.0 kg (418.9 pounds)

Kawasaki Tengai (reduced Effect) dimensions and frame

Rear brakesSingle disc
Front brakesSingle disc
Rear tyre dimensions130/80-17
Front tyre dimensions90/90-21

Speed and acceleration

Top speed130.0 km/h (80.8 mph)

Other specs

MaintenanceFind parts, fluids, filters, maintenance tools and service items on eBay
Fuel capacity23.00 litres (6.08 gallons)

Performance Profile & Rider Fit

27 hp
Peak Power
8.5s
0-60 mph
80.8 mph
Top Speed

Best For

Track15%
City45%
Cornering45%
Daily Riding45%
Touring55%
Passenger30%

Rider Profile

Best ForSuited to riders with at least some experience, as the tall dual-sport stance and modest power reward confident, relaxed handling rather than raw throttle control.
PurposeBuilt as a big-bore trail and adventure machine, this bike is meant for exploring back roads, gravel tracks, and light off-road terrain rather than chasing top speed.
Rider FitThe tall seat height and dual-sport ergonomics favor taller or physically confident riders comfortable standing on the pegs and managing a top-heavy low-speed feel.
CharacterA rugged, honest single-cylinder adventure bike with a torquey low-end feel, simple mechanicals, and an unpretentious go-anywhere attitude.
Not Ideal ForNot a good fit for riders wanting fast, aggressive road performance or a plush, long-distance touring experience.

Character map is an editorial estimate based on this bike's specifications, not a lab-tested measurement.

Rider Reviews

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