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The Honda NX250 is a crossover dual-sport motorcycle produced by Honda, available in the United States from 1988 through 1990. It is a lightweight bike intended for both on-road and off-road riding. The NX250 featured the new MD21E[1] engine which is a liquid-cooled, 249 cc, single-cylinder, four-valve, DOHC, four-stroke with an electric start. It has a bore and stroke of 70.0 mm × 64.8 mm (2.76 in × 2.55 in), 11 to 1 compression ratio, and a six-speed transmission. The suspension has 37 mm (1.5 in) forks with 8.7 inches travel up front, and Pro-Link with 7.9" in the rear. The NX250 has a 1,350 mm (53 in) wheelbase and a dry weight of 118 kg (260 lb). The seat height is 820 mm (32 in). In some countries Honda continued production of the NX250 up to 1993, where it was named Honda NX250 Dominator.

Honda NX250
Honda AX-1

Honda AX-1
Manufacturer	Honda
Also called	Honda NX250 Dominator
Production	1988-1990
Class	Dual-sport
Engine	MD21E. 249 cc (15.2 cu in), liquid-cooled, four-stroke, DOHC, single-cylinder[1]
Bore / stroke	70 mm × 64.8 mm (2.76 in × 2.55 in), 4-valves
Compression ratio	11.0:1
Power	21.39 kW (28.68 hp) @ 8500 rpm[1]
Transmission	6-speed chain drive manual
Frame type	Tubular steel double cradle
Suspension	Front: Telescopic Rear: Swingarm
Brakes	Front: Disc Rear: Drum Brake/Expanding brake AX-1: Disc
Tires	Front: 19 in (480 mm) Rear: 16 in (410 mm)
Wheelbase	1,350 mm (53 in)
Dimensions	L: 2,040 mm (80 in) W: 805 mm (31.7 in) H: 1,115 mm (43.9 in)
Seat height	810 mm (32 in)
Weight	118 kg (260 lb)[citation needed] (dry) 133 kg (293 lb) (wet)
Fuel capacity	9 L (2.0 imp gal; 2.4 US gal) Adv: 33 L (7.3 imp gal; 8.7 US gal)
Oil capacity	1.6 L (0.35 imp gal; 0.42 US gal)
Related	Honda NX650 Dominator

AX-1

The Honda AX-1 is a modified version of Honda NX250 intended only for the Japanese market but was offered in Oceania. Using the same chassis as the NX250, the AX-1 came standard with alloy rims, aluminum Pro-Link rear suspension this time with a rear disc brake, dual round headlights, taller cams, stainless steel exhaust and different carburetor settings. The valve clearance check interval is every 24,000 miles (39,000 km).

Spares commonality with NX250 is high, but certain parts are rare, such as the rear luggage rack, exhaust heat shield, cylinder heads and valve guides and headlights. However, the MD21E engine is known to run to over 100,000km without major overhaul. Part of this is due to an extremely durable Nikasil-coated cylinder bore. Nikasil is a chemically deposited layer of silicon carbide, which is typically twice as hard (on the Mohs scale) as iron/steel liners. The rear cush drive rubbers are not available and owners have made their own by modifying Honda Civic suspension bushes of similar dimensions, although they rarely fail during the life of the vehicle.

There is a small but dedicated online community for the NX250 and AX-1. With the rise of popularity of adventure bikes, there is renewed interest in the Honda AX-1 primarily for its light weight and power exceeding modern contemporaries such as the Honda CRF250L.

References

На других языках

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- [en] Honda NX250

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[it] Honda NX 250

La Honda NX 250 o NX250[1][2] (conosciuta anche come Honda NX 250 Dominator) è una motocicletta enduro stradale dotata di un motore monocilindrico da 249 cm³ di cilindrata prodotta dal casa motociclistica giapponese Honda tra il 1987 e il 1990.

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[ru] Honda NX250

Honda NX250 — мотоцикл двойного назначения, производившийся японской компанией Honda в США в 1988—1990 годах. Предназначался для передвижения как по дорогам так и по пересечённой местности. На мотоцикле был установлен новый одноцилиндровый четырёхтактный двигатель MD21E[1] с жидкостным охлаждением объёмом 249 см3. Honda NX250 оснащалась шестиступенчатой коробкой передач. Сухая масса мотоцикла составляет 118 кг. Высота сиденья — 820 мм[2]. В некоторых странах Honda продолжала выпускать NX250 до 1993 года под названием Honda NX250 Dominator.

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