What category is the 1981 Benelli 654?

The 1981 Benelli 654 has a Category of Classic.

What is the engine size of the 1981 Benelli 654?

The 1981 Benelli 654 has a Capacity: of 604.00 ccm (36.86 cubic inches).

What type of engine does the 1981 Benelli 654 have?

The 1981 Benelli 654 has a Engine type of In-line four, four-stroke.

What is the engine power of the 1981 Benelli 654?

The 1981 Benelli 654 has a Power of 62.00.

What is the top speed of the 1981 Benelli 654?

The 1981 Benelli 654 has a Top speed of 190.0 km/h (118.1 mph).

Is the 1981 Benelli 654 air cooled or liquid cooled?

The 1981 Benelli 654 has a Cooling system of Air.

How many gears does the 1981 Benelli 654 have?

The 1981 Benelli 654 has a Gearbox of 5-speed.

How much does the 1981 Benelli 654 weigh?

The 1981 Benelli 654 has a Weight incl. oil, gas, etc of 210.0 kg (463.0 pounds).

Benelli 654 - 1981 Specifications and Reviews

Name: 1981 Benelli 654
Brand: Benelli

The 1981 Benelli 654 is a classic middleweight sport bike that appeals to riders seeking spirited performance in a manageable package. Its air-cooled inline-four engine delivers responsive power with a 190 km/h top speed, while the lightweight chassis and forgiving handling characteristics make it ideal for enthusiasts who value everyday ridability alongside weekend excitement.

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1981

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General information
Category	Classic
Year	1981
Model	Benelli 654
Engine and Transmission Specifications
Transmission type,final drive	Chain
Gearbox	5-speed
Cooling system	Air
Fuel control	OHC
Valves per cylinder	2
Bore x stroke	60.0 x 53.4 mm (2.4 x 2.1 inches)
Compression	9.3:1
Top speed	190.0 km/h (118.1 mph)
Power	62.00
Engine type	In-line four, four-stroke
Capacity:	604.00 ccm (36.86 cubic inches)

Brakes, suspension, Frame and wheels
Rear brakes	Single disc
Front brakes	Dual disc
Rear tyre dimensions	3.50-18
Front tyre dimensions	3.25-18
Physical measures and capacities
Fuel capacity	15.00 litres (3.96 gallons)
Weight incl. oil, gas, etc	210.0 kg (463.0 pounds)
Other specs
Maintenance	Find parts, fluids, filters, maintenance tools and service items on eBay

Performance Profile & Rider Fit

62 hp

Peak Power

5.5s

0-60 mph

118.1 mph

Top Speed

Best For

Track40%

City55%

Cornering55%

Daily Riding50%

Touring50%

Passenger45%

Rider Profile

Best For	This bike suits riders with some experience on classic-era machinery, as its air-cooled four-cylinder character and period brakes and suspension demand a more deliberate riding style than modern bikes.
Purpose	It's best suited to riders who want an authentic, classic in-line four experience for weekend rides, shows, and nostalgic touring rather than outright performance.
Rider Fit	At 210 kg with a modest seat height typical of early-80s standards, it's manageable for average-height riders but its heft will be noticeable at low speeds and when maneuvering.
Character	The 654 has the smooth, high-revving charm of a classic in-line four, delivering a refined and mechanically engaging feel rather than raw power.
Not Ideal For	This is not the right bike for riders seeking modern performance, off-road capability, or long-distance touring comfort with advanced electronics and wind protection.

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