HONDA CRF450RX (2017-Present) Specs, Performance & Photos

In 2017, the Japanese maker released the Honda CRF450RX, a motocross motorcycle part of the fifth generation. The fifth generation comprised motorcycles manufactured between 2017 and 2020, with yearly revisions.

Compared to the CRF450R, the CRF450RX packed several minor differences, such as the final chain drive, less travel on the rear suspension, different tires, an 18-inch rear wheel as opposed to the 19-inch of the CRF450R, a smaller wheelbase, a larger fuel tank, and slightly more overall weight.

The bike was identical in other departments, packing standard features, such as a high-mounted dual exhaust system, a single seat, a high-mounted front fender, an aluminum frame, a dual-sided aluminum swingarm, and wire-spoke wheels with off-road tires.

For suspension, the bike packed a 49 mm fully adjustable Showa telescopic fork on the front with 305 mm wheel travel and a Pro-Link swingarm with a fully adjustable Showa shock absorber on the rear with 312 mm wheel travel.

The braking performance was achieved by a 260 mm brake disc mounted on the front wheel and a 240 mm brake rotor on the rear wheel. Both discs were clamped by hydraulic calipers, offering excellent stopping power.

As for the power figures, the 2017 Honda CRF450RX delivered 55 hp at 9,000 rpm and 50 Nm (37 lb-ft) torque at 6,500 rpm from a 449cc four-stroke liquid-cooled single-cylinder engine fed by a Programmed Fuel Injection (PGM-FI) system.