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|Also called||CB400F, NC27|
|Engine||399 cc (24.3 cu in) liquid cooled DOHC four valves/cyl. inline-four|
|Bore / stroke||55.0 mm × 42.0 mm (2.17 in × 1.65 in)|
|Top speed||190 km/h (118 mph)|
|Power||55.2 bhp (41.2 kW) @ 10,000 rpm (claimed)|
|Torque||29 lb·ft (39 N·m) @ 9,500 rpm (claimed)|
6-speed, chain drive
|Frame type||Steel perimeter|
|Suspension||Showa. Front: 41 mm telescopic fork, non-adj.
Rear: single shock w/7-way preload adj.
|Brakes||Single disc front/rear|
|Tires||Bridgestone Front: 110/70-17
|Rake, trail||25.5 degrees, 99 mm (3.9 in)|
|Wheelbase||1,370 mm (54 in)|
|Dimensions||L 2,035 mm (80.1 in)
W 705 mm (27.8 in)
|Seat height||775 mm (30.5 in)|
|Weight||179 kg (395 lb) (dry)
187 kg (413 lb) (wet)
|Fuel capacity||3.3 US gal (12 l; 2.7 imp gal)|
The Honda CB-1 is a small, light naked sport bike with a 399 cubic centimetres (24.3 cu in) straight-four engine, carrying the model code NC27. In contrast to other models of the Honda CB series, the name is written with a hyphen. In some countries it was marketed as Honda CB400F.
The bike was first introduced in 1989 and built until the end of 1990. Originally developed for the Japanese market, the CB-1 was also officially sold in the USA and Canada. Called a "great motorcycle that never found an audience" and "victims of a difficult market" by Cycle World, the final model year 1990 CB-1s available as leftover stock were offered in 1992 at a $600 discount, for $3700 in the US, which in current money would be $6,218 accounting for inflation.
The CB-1 engine is similar to the early NC23 models CBR400RR, with changes to the port lengths and angles as well as smaller valves and lower compression ratio; changes in the primary and secondary gear ratios reduced the 60 mph (97 km/h) first gear down to around 30 mph (48 km/h), making the slightly less powerful CB-1 feel much quicker from a standstill than its sportier sibling, All engines derived from the NC23 block carry the NC23 ID code in the engine number; this includes the NC27, 23, 29, 31 etc., including the VTEC models with chain driven cams. Like many of its stablemates, the CB-1 has straight gear-driven dual camshafts with self-silencing gears to reduce whine.
Cycle World measured the acceleration from 0 to 1⁄4 mile (0.00 to 0.40 km) as 13.17 seconds at 99.16 miles per hour (159.58 km/h) and a top speed of 118 miles per hour (190 km/h) Braking distance from 60 to 0 miles per hour (97 to 0 km/h) was 124 feet (38 m). — saying the bike was "a reincarnation of the standard motorcycle ... the sort of bike everyone rode before sporting riders went replica racer crazy.
- ""Honda CB-1; A new standard with the soul of a suburbanite and the heart of a tiger", Cycle World (New York) 28 (4), Apr 1989: 44–47
- Miles, Matthew (Apr 1989), "Best Buys; The affordable alternative to sticker shock", Cycle World (New York) 28 (4): 44–47
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