Honda CB250RS

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Honda CB 250RS
Manufacturer
Production 1980 - 1984
Class Standard
Engine
air-cooled, four-stroke, single cylinder, SOHC, 4 valves
Bore / Stroke 73.7mm x 73.7mm
Compression ratio 9.3:1
Horsepower 11.94 HP (8.9 KW) @ 8500RPM
Torque 10.33 ft/lbs (14.0 Nm) @ 8000RPM
Fuel System 30mm Keihin carburetor
Transmission Gear box: 5-speed, manual
Final Drive: chain
Suspension Front: telescopic fork
Rear: dual shock absorbers, adjustable
Brakes Front: single 250mm disc
Rear: 140mm drum
Front Tire 3.00 - 19
Rear Tire 4.10 - 19
Weight 136.0 kg (wet)
Recommended Oil Honda GN4 10W-40
Manuals Service Manual

The Honda CB250RS is a 250 cc motorcycle designed for road use. It has a four stroke, four valve, air cooled, single cylinder engine, which was built for the earlier XL250S trail bike. The RS is known for its slim build, with a dry weight of only 128 kg, and nimble handling. The engine featured counter rotating balancers which reduced vibration and allowed a lighter frame. Further weight savings were achieved by making the engine as stressed component. Early models were kick-started (with a completely superfluous automatic decompression lever), while later Deluxe models (designated RS-D) came with electric start and different paintwork. The bike has a front disk brake and rear drum brake, and while it had only a single cylinder, it had twin exhausts.

The engine generates modest power and achieves a top speed of around 150 km/h or 90 mph. Early models sported 26 hp, while later models reached 33 hp. The bike was known for being hard-wearing and reliable. It is also very fuel efficient, achieving up to 70 mpg. One known issue with the bike was that at around 50,000 miles an RS will often suddenly stop and this can usually be traced to a faulty ignition coil in the alternator. The CDI also tended to fail on high-mileage bikes.

Overall the CB250RS is a fun, low cost motorcycle, and has a loyal following among students and delivery riders for both its economical and nimble characteristics. The CB250RS was phased out of production in the mid-late 1980s.


Engine

A 73.7mm bore x 73.7mm stroke result in a displacement of just 249.0 cubic centimeters.

Drive

The bike has a 5-speed, manual transmission.

Chassis

It came with a 3.00 - 19 front tire and a 4.10 - 19 rear tire. Stopping was achieved via single 250mm disc in the front and a 140mm drum in the rear. The front suspension was a telescopic fork while the rear was equipped with a dual shock absorbers, adjustable.

1980 Honda CB 250RS

The 1980 MY Honda CB 250RS has, at its heart, an air-cooled, four-stroke, 249cc, single cylinder powerplant, mated to a five-speed manual transmission with a chain final drive, and can produce a claimed 12 horsepower and 13 Nm of torque.

Also, this agile machine has been fitted with laced wheels, a chromed, short, dual exhaust system, analogue instrumentation dials, an one-piece, dual seat, a blacked-out, steel frame, a square headlight, wide handlebars, a front disc brake coupled to a drum in the rear and dual shock absorbers as a rear suspension.


1981 Honda CB 250RS

The 1981 MY Honda CB 250RS has been equipped with laced wheels, a chromed, short, dual exhaust system, analogue instrumentation dials, an one-piece, dual seat, a blacked-out, steel frame, a square headlight, wide handlebars, a front disc brake coupled to a drum in the rear and dual shock absorbers as a rear suspension.

In the engine department it is powered by an air-cooled, four-stroke, 249cc, single cylinder powerhouse, that was paired to a five-speed manual transmission with a chain final drive, and can reach a maximum power output of 12 horsepower and 13 Nm of torque.


1982 Honda CB 250RS

The 1982 MY Honca CB 250RS boasts a maximum power output of 12 horsepower and 13 Nm of torque from its air-cooled, four-stroke, 249cc, single cylinder powerplant that was paired to a five-speed manual transmission with a chain final drive.

In addition it has been equipped with laced wheels, a chromed, short, dual exhaust system, analogue instrumentation dials, an one-piece, dual seat, a blacked-out, steel frame, a square headlight, wide handlebars, a front disc brake coupled to a drum in the rear and dual shock absorbers as a rear suspension.


1983 Honda CB 250RS

The 1983 MY Honda CB 250RS is a powerful yet agile entry-level machine, that is mainly addressed for the younger and less-experienced among riders. It comes with laced wheels, a chromed, short, dual exhaust system, analogue instrumentation dials, an one-piece, dual seat, a blacked-out, steel frame, a square headlight, wide handlebars, a front disc brake coupled to a drum in the rear and dual shock absorbers as a rear suspension.

Also, it can produce a claimed 12 horsepower and 13 Nm of torque from its air-cooled, four-stroke, 249cc, single cylinder powerhouse, that was mated to a five-speed manual transmission with a chain final drive.


1984 Honda CB 250RS

1984 Honda CB 250RS 1984 Honda CB 250RS

If you're on the market for a gritty and agile entry-level machine, that offers superior maneuverability and fuel-efficiency for a busy daily commute, then the 1984 MY Honda CB 250RS may be the right choice for you. It has, at its heart, an air-cooled, four-stroke, 249cc, single cylinder engine that was mated to a five-speed manual transmission with a chain final drive, and can produce a claimed 12 horsepower and 13 Nm of torque.

In addition, it was fitted with laced wheels, a chromed, short, dual exhaust system, analogue instrumentation dials, an one-piece, dual seat, a blacked-out, steel frame, a square headlight, wide handlebars, a front disc brake coupled to a drum in the rear and dual shock absorbers as a rear suspension.


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