| MODEL | HONDA CB 400 SUPER FOUR 2018 - 2021 |
| Year | 2018 - 2021 |
| Engine Type | Four stroke, transverse four cylinder, DOHC, 4 valves per cylinder, HYPER VTEC |
| Displacement / Capacity | 399 cc / 24.3 cu in |
| Bore X Stroke | 55 x 42 mm |
| Compression Ratio | 11.3:1 |
| Cooling System | Liquid cooled |
| Max Power | 41 kW / 56 PS @ 11000 rpm |
| Max Torque | 39 Nm / 28.8 lb-ft @ 9500 rpm |
| Ignition | Full transistor, digital |
| Induction | PGM-FI fuel injection |
| Start System | Electric |
| TRANSMISSION SPECS | |
| Lubrication | — |
| Gear Box | 6 Speed, constant mesh |
| Clutch | Wet, multi-plate, coil spring |
| Final Drive | 525 O-ring chain |
| CHASSIS SPECS | |
| Frame | Tubular steel double cradle |
| Front Suspension | 41 mm Showa telescopic fork, preload adjustable |
| Rear Suspension | Dual Showa shocks with remote reservoirs, preload adjustable |
| Front Brakes | 2x 296 mm floating discs, 4 piston calipers |
| Rear Brakes | — |
| DIMENSION SPECS | |
| Overall Length | — |
| Overall Width | 725 mm / 28.5 in |
| Overall Height | — |
| Seat Height | 755 mm / 29.7 in |
| Wheelbase | 1410 mm / 55.5 in |
| Ground Clearance | 130 mm / 5.1 in |
| Dry Weight | — |
| Wet Weight | 199 kg / 439 lbs (ABS: 202 kg) |
| WHEEL SPECS | |
| Front Tyre | 120/60 ZR17 55W |
| Rear Tyre | 160/60 ZR17 69W |
| FUEL SYSTEM | |
| Fuel Capacity | 18 Litres / 4.75 US gal |
| Fuel Consumption | — |
| Top Speed | — |
The 25th-anniversary update for 2018 brought a smaller two-chamber muffler and revised throttle bodies to meet tighter emissions rules while raising claimed output to 56 PS. An LED headlight, retuned suspension and a push-type helmet lock were added, and weight rose by about 2 kg.
