Honda NX 250 (1991–1996) — Specs

Identity

Manufacturer: Honda

Model: NX 250

Category: Motorcycle

Type: Motorcycle

Years: 1991 → 1996

Engine

Displacement (cc): 249

Cylinders: 1

Power (hp): 23

Power (kW): 17

Torque (Nm): 21

Dimensions

Overall length: 2070 mm

Overall width: 770 mm

Overall height: 1130 mm

Wheelbase: 1395 mm

Ground clearance: 155 mm

Weight (kg): 133

Seat height (mm): 820

Tank (L): 9

Tires

Front tire: 3.00-21

Rear tire: 4.10-18

Front pressure (bar): 1.5

Rear pressure (bar): 1.5

Drivetrain

Drive chain: 428 chain, 102 links

Sprockets (front / rear): 13 / 41

Ignition

Spark plug: NGK CR9EH-9

Plug gap: 0.9 mm

Fluids & Filters

Engine oil: SAE15W-40

Engine oil (with filter, L): 1.4

Engine oil (without filter, L): 1.3

Oil filter: Hiflofiltro HF111

Air filter: OEM air filter

Coolant (L): 1

Brake fluid: DOT 4

Fuel consumption

Estimated range: ~300 km on a full tank (9.0 L)

Service

Battery: OEM battery specification

Service interval (km): 6000

Service interval (months): 12

Valve check (km): 12000

Parts and consumables for this motorcycle

Data is gathered with care, but without guarantee. Always confirm critical information with your dealer or workshop.

Service notes

Service interval: every 6,000 km or 12 months, whichever comes first. Valve clearance check every 12,000 km. Valve clearance — intake cold 0.23 mm, exhaust cold 0.23 mm. Engine oil: oil grade SAE15W-40, 1.4 L with filter change, 1.3 L without filter change. Spark plug: NGK CR9EH-9 (gap 0.9 mm). Brake fluid: DOT 4. Coolant capacity: 1 L. Chain: 102 links, sprockets 13/41 teeth. Tire pressure: front 1.5 bar, rear 1.5 bar (cold). Tire size: front 3.00-21, rear 4.10-18. Always confirm critical values with the workshop manual or an authorised dealer.

OEM and quality aftermarket parts that fit this bike. Always confirm with your dealer before ordering.

Engine oil

Spec: SAE15W-40, 1.4 L (with filter), 1.3 L (without filter)

OEM OEM recommended engine oil (SAE 15W-40)
Premium Motul 7100 4T (100% Synthetic, Ester)
Premium Motul 5100 4T Technosynthese (Semi-Synthetic)

Which Motul for this bike?

	Motul 7100 4T ✓	Motul 5100 4T
Product	Motul 7100 4T — 100% fully synthetic	Motul 5100 4T — semi-synthetic
Best for	Sport, Naked, Adventure (600cc+), track	Standard, Cruiser, Scooter, daily use
RPM protection	Excellent — ester base, stable under load	Good — for normal riding conditions

Standard Repsol Moto Racing 4T (Synthetic)
Standard Elf Moto 4 Tech (Semi-Synthetic)

Fully Synthetic vs Semi-Synthetic

	Fully Synthetic	Semi-Synthetic
Base oil	100% chemical synthesis (ester or PAO)	Mineral oil + synthetic additives
Heat resistance	Excellent — stable at extreme heat & RPM	Good — suitable for normal temperatures
Cold start	Better — reaches engine faster when cold	Good — adequate for normal climates
Change interval	Longer (up to 10,000 km)	Shorter (5,000–7,000 km typical)
Price	Higher	Lower

Oil filter

Spec: Hiflofiltro HF111

Premium Hiflofiltro HF111
Premium K&N KN-111

Air filter

Spark plug

Spec: NGK CR9EH-9, gap 0.9 mm

OEM NGK CR9EH-9
Premium NGK CR9EHIX-9
Standard NGK CR9EH-9

Front brake pads

Rear brake pads

Drive chain

Spec: 102 links | Sprockets 13/41 teeth / 102 links

OEM OEM chain (pitch 520 (or 428 for some commuter 250s))

Front tire

Spec: 3.00-21, 1.5 bar

OEM OEM 3.00-21

Rear tire

Spec: 4.10-18, 1.5 bar

OEM OEM 4.10-18

Battery

Premium Yuasa YTX7L-BS or YTX7A-BS (typical 125-250cc)

Brake fluid

Spec: DOT 4

Standard TotalEnergies HBF4

Coolant

Spec: 1.00 L coolant capacity

Service interval

Spec: 6 000 km / 12 months

OEM Engine oil + oil filter change
OEM Air filter inspection
OEM Spark plug check
OEM Brake fluid replacement: every 2 years

Valve check

Spec: 12 000 km

OEM Intake clearance: cold 0.23 mm
OEM Exhaust clearance: cold 0.23 mm

Suspension

Spec: 37 mm telescopic fork / 412 ml SAE 15W

OEM Fork: 37 mm telescopic fork
OEM Fork oil grade: 412 ml SAE 15W