CBR400

Configuration: inline-four engine Displacement: 399 cc (24.3 cubic inch) Valve train: DOHC Mass: 163 kg (360 lb) Fuel capacity: 14.4 L (3.2 imp gal; 3.8 US gal) Rider seat height: 770 mm (30 inches) Overall length: 1,990 mm (78 inches)
First incarnation from the CBR400s came about in 1983 as being the CBR400F as a naked. The subsequent a couple of years, it came as semi and fully faired as the F3 Endurance. 1986 saw the fully faired CBR400R NC23 Aero released. The Aero was superseded the year after by the CBR400RR NC23 Hurricane, which featured the Tri-Arm braced swing arm. The last of the CBR400s entered the type of the CBR400RR NC29 FireBlade, featuring the Gull-Arm swing arm with production ending in 1994. The NC23 Inline 4 DOHC Cam Gear Train engine was carried over. The NC23 is normally referred as the Tri-Arm along with the NC29 as being the Gull-Arm to distinguish relating to the two models. The NC23 engine have also been utilized in the Honda CB-1 NC27.

The CBR400F premiered in December 1983. Several-valves per cylinder, air-cooled, four-stroke, DOHC inline-four engine had a rotational-speed valve stop mechanism "REV" (a prototype of Honda's VTEC system) that changed from two valves into four valves at 9,500 rpm.