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The Honda CR250R was a Honda racing dirt bike. The prototype was built in 1971, but it was not until late 1972 that production of the 1973 model "out of the box racers" began sale to the general public.
The Honda CR250M had a two-stroke 29 horsepower engine, and weighed in at 229 pounds (104 kg). [2] [3] Designed by Soichiro Miyakoshi, the prototype production machine began testing in Japan in 1971, and on California motocross tracks in 1972. [4]
The Honda RS250R featured a V-twin 250 cc two-stroke engine with a V-angle of 90 degrees. A new 75 degrees V-twin was introduced in 1993. A new 75 degrees V-twin was introduced in 1993. Between 1984 and 2009 the RS250R has been produced in four different generations, named: ND5 (1984), NF5 (1987), NX5 (1993) and NXA (2001).
The CR500 was first produced in 1984, and had a 491 cc (30.0 cu in) air-cooled two-stroke engine that produced 60.8 hp [citation needed], the most powerful motocross bike that Honda had ever produced. [11] For 1985, a new water-cooled engine was introduced. The CR500 raced in long desert rallies like the Baja 500 and 1000. The 500 cc racing ...
For 1983 the model was dropped from Honda's line-up, but came back in 1984 with a completely new engine dubbed the "Radial Four Valve Chamber" (RFVC) engine. The original 250 cc (15 cu in) RFVC engine had a bore and stroke of 75 mm × 56.5 mm (2.95 in × 2.22 in), but in 1986 this was changed to 73 mm × 59.5 mm (2.87 in × 2.34 in). 1986 also ...
In 1984, the bike was introduced with Honda's Radial Four Valve Combustion Chamber (RFVC). [citation needed] It has a 110 kg (240 lb) claimed dry weight, [1] and a 36-inch seat height (96–04). Honda claims the engine produces 28 horsepower at 8000 rpm and 17 ft-lb feet of torque. The 1996–2004 versions of the XR250R had 10.6 inches of ...
The Honda NSR250R is a street-legal road-orientated 249cc two stroke sport bike produced by Honda Motor Co., Ltd between 1987 and 1999. It evolved from the popular NS250R MC11 and was produced over four distinct generations, each powered by liquid-cooled , reed valve inducted 249cc 90° V-twin two stroke engines.
The CR250M was Honda's first two-stroke production race bike, the first competition dirt bike that Honda built from scratch instead of adapting a street bike, and the first production motocrosser. A chrome-moly frame, aluminum bodywork and plastic fenders contributed to its light weight, even after restyling when initial tests showed the frame ...