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The Honda CRF450R is a four-stroke racing motocross motorcycle built by Honda Motor Company. It is the successor to the Honda CR250R two-stroke.
In addition, Honda changed the carburetor from a 42 mm Keihin butterfly type to a 40 mm Keihin FCR. This increased the power from about 33 horsepower (25 kW) in the first generation to over 41 horsepower (31 kW) in the second. The first generation engine had a 10.5:1 compression ratio while the second generation had a 12:1 compression ratio.
This machine is built as a CRF-450R optimized for hare scramble, hard enduro, and GNCC style racing. Essentially the same as the CRF-450R except offering an electric start, larger fuel tank, and an 18-inch rear wheel as standard equipment. This bike is to bridge the gap between the more mild X-model and the closed-course race style R model.
The Honda CRF450X is an off-road motorcycle made by Honda Motor Company.It currently has a 450 cc (27 cu in) liquid-cooled single-cylinder engine. First offered in 2005, [2] the CRF450X shares very little with the CRF450R motocrosser.
CRF450R: 449 CB500F: 471 CBR500R: 471 CB500X: 471 CMX500: 471 CL500/SCL500: 471 NX500: 471 CB500 Hornet: 471 CR480: 472 Ascot (VT500, VT500FT) 491 Shadow VT500: 491 491 CX500: 497 Four (CB500) 498 Ascot (FT500) 498 Tourist Trophy (GB500) 498 XBR500: 498 Sport (CB500 twin) 499 CBF500: 499 NSR500: 499 Interceptor (VF500F) 500 Magna V30 (VF500C ...
The Honda CRF450L (known as CRF450RL since 2020) [1] is a CRF series 450 cc (27 cu in) dual-sport motorcycle made by Honda.It was announced in May 2018 and available from September of the same year. [6]
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 ...
At first the RAC rating was usually representative of the car's actual (brake) horsepower, but as engine design and technology progressed in the 1920s and 1930s these two figures began to diverge, with engines making much more power than their RAC ratings suggested: by 1924 the 747 cc (45.6 cu in) engine of the Austin Seven (named for its 7 hp ...