In 2004, the Japanese motorcycle manufacturer launched the CBR600RR, a sports bike part of Honda's CBR series that packed the same specifications and features as the 2003 model, except for the addition of an oxygen sensor.
Like the predecessor, the bike was based on MotoGP technology also seen in the Honda RC211V racing machine, with a similar appearance. Also, the model featured a Unit Pro-Link rear suspension, a version of the single rear shock absorber with the upper mount connected to the swingarm that isolated unwanted forces transmitted to the steering head.
For the frame, Honda used a new Hollow Fine Die-Cast frame technology, with casting molds that were given a ceramic interior coating, which made it possible to reduce the thickness of the five-piece aluminum frame from 3.5 mm to 2.5 mm.
In the performance department, the 2004 Honda CBR600RR had its soul in a 599cc four-stroke four-cylinder liquid-cooled engine fitted with the Honda Dual Stage Fuel Injection (DSFI) system that helped deliver an output power of 117 hp with maximum strength at 13,000 rpm and 64 Nm (47 lb-ft) of torque available at 11,000 rpm.
For suspension, the bike packed a 45 mm adjustable HMAS cartridge fork on the front and an adjustable Unit Pro-Link HMAS single shock absorber on the rear.
As for braking performance, the CBR featured two 310 mm discs with four-piston calipers on the front wheel and a 220 mm disc squeezed by a single-piston caliper on the rear wheel.