Honda NX 250 Dominator (AX-1): review, history, specs

Class: dual sport

Production: 1987-1994

Models
Honda NX250 Dominator (Europe, USA, Canada) 1988-1993	Honda AX-1 (Japan) 1987-1994
Honda NX250 Dominator	Honda AX-1

History

History
Year	Country	Name / Frame / Engine	Colors
1987	Japan	Name: Honda AX-1 Frame/Engine: MD21-100XXXX/ MD21E-XXXXXXX Code: NX250J	Honda AX-1
1988	Japan, North America, Europe	Name: Honda AX-1 (Japan); Honda NX250 Dominator (Europe, North America) Frame/Engine: MD21-101XXXX / MD21E-XXXXXXX (Japan); MD215XXXX, MD216XXXXXX (Europe); JH2MD21XXXXXXXXX (North America) Code: NX250J (Europe, Canada, Japan); NX250A / NX250AC (USA)	Honda NX250 (Dominator) Honda AX-1
1989	Japan, USA, Europe	Name: Honda AX-1 (Japan); Honda NX250 Dominator (Europe, USA) Frame/Engine: MD21-110XXXX / MD21E-XXXXXXX (Japan); MD215XXXX, MD216XXXXXX (Europe); JH2MD21XXXXXXXXX (USA) Code: NX250K (Europe, Japan); NX250A / NX250AC (USA)	Honda NX250 (Dominator) Honda AX-1
1990	Japan, USA, Europe	Name: Honda AX-1 (Japan); Honda NX250 Dominator (Europe, USA) Frame/Engine: MD21-115XXXX / MD21E-XXXXXXX (Japan); MD215XXXX, MD216XXXXXX, MD25XXXXX (Europe); JH2MD21XXXXXXXXX (USA) Code: NX250L, NX2502L (Europe); NX250A / NX250AC (USA); NX250K (Japan)	Honda NX250 (Dominator) Honda AX-1
1991	Japan, Switzerland	Name: Honda AX-1 (Japan); Honda NX250 Dominator (Switzerland) Frame/Engine: MD21-115XXXX / MD21E-XXXXXXX (Japan); MD255XXXX (Switzerland) Code: NX250M (Switzerland); NX250K (Japan)	Honda NX250 (Dominator) Honda AX-1
1993	Japan, Europe	Name: Honda AX-1 (Japan); Honda NX250 Dominator (Europe) Frame/Engine: MD21-115XXXX / MD21E-XXXXXXX (Japan); MD215XXXXXX, MD253XXXXXX, MD255XXXXXX, JH2MD259XXXXXXXXXX (Switzerland) Code*: NX250P, NX2502P (Europe); NX250K (Japan)	Honda NX250 (Dominator) Honda AX-1
1994	Japan	Name: Honda AX-1 Frame/Engine: MD21-120XXXX / MD21E-XXXXXXX Code: NX250R / NX250RIII	Honda AX-1

Specifications

Honda NX 250 Dominator (AX-1): specs

Specifications
DIMENSIONS	Overall length	2085 mm / 82,1 in (ND, G, GII types – 2095 mm / 82,5 in)
	Overall width	805 mm (31,7 in)
	Overall height	1120 mm (44,1 in)
	Wheelbase	1350 mm (53, 1 in)
	Ground clearance	250 mm (9,8 in)
	Seat height	810 mm / 31,9 in – AX-1 820 mm / 32,3 – NX250
	Dry weight	118 kg (260 lbs) – NX250 114 kg(251 lbs) – AX-1
	Curb (wet) weight	128 kg (282 lbs) – NX250 124 kg (273 lbs) – AX-1
FRAME	Type	Diamond, tubular steel double cradle
	Front suspension, travel	Telescopic fork 37 mm, 220 mm (8,7 in)
	Rear suspension, travel	Swingarm with mono-shock, 200 mm (7,8 in)
	Front tire size	90/100-19 55P
	Rear tire size	120/90-16 63P
	Front brake	Single disc
	Rear brake	Drum (AX-1 – single disc)
	Fuel capacity	9,0 l / 2,38 US gal (inc. reserve – 1,6 l / 0,42 US gal)
	Trail	89 mm (3,5 in)
	Fuel economy / consumption	3,9 l / 100 km (60,3 US mpg)^[1]
ENGINE	Type	Water cooled 4-stroke
	Cylinder arrangement	Single cylinder inclined 15° from vertical
	Bore & Stroke	70,0 x 64,8 mm (2,76 x 2,55 in)
	Displacement	249 cm³ (15,1 cu in)
	Compression ratio	11.0:1
	Valve train	Chain driven, DOHC, 4 valves
	Max. power	25 hp (19 kW) / 8500 rpm – NX250 29 hp (21,3 kW) / 8500 rpm – AX-1
	Max. torque	23,5 Nm (2,4 kgf-m) / 7000 rpm – NX250 25,5 Nm (2,6 kgf-m) / 7500 rpm – AX-1
	Acceleration 0 to 100 km/h (0-60 mph)	6,6 sec.^[2]
	Top speed	128 km/h^[3]
CARBURETION SYSTEM	Type	Carburetor, 1x Keihin 32 mm
CARBURETION SYSTEM	Identification number	PD 6BA (PD 6BB, PD 6BC)
DRIVE TRAIN	Clutch	Wet, multi-plate, cable operated
	Transmission	6-speed constant mesh
	Final drive	Chain
	Primary reduction	2.7272 (60/22)
	Final reduction	3.1538 (41/13)
	Gear ratio I II III IV V VI	2.8461 (37/13) 1.7777 (32/18) 1.3333 (28/21) 1.0416 (25/24) 0.8846 (23/26) 0.7857 (22/28)
ELECTRICAL	Ignition	CDI
	Alternator	200W/5000 rpm
	Battery capacity	12V-6Ah