A true expert in versatility, the CRF450RX is just as comfortable in the tight woods of a GNCC course as it is on a high-speed WORCS or GNCC track. A close relative of the motocross-focused CRF450R, the RX maintains an aggressive, agile character, but is purpose-built for closed-course off-road competition, offering features like a dedicated ECU and suspension settings, an 18-inch rear wheel, an aluminum side stand, a large 2.1-gallon fuel tank and hand guards